Montana Department of Transportation

Malcolm “Mack” Long, Director

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Public Involvement

Old MT 200 – Erosion Repair

Old MT 200 logo

Weekly Updates

March 8-12, 2021

  • The erosion wall is constructed, the riprap is added, topsoil has been placed, and seeding is complete. MT 200 is currently open to two lanes of traffic and speeds are reduced to 35 mph near Marshall Canyon Road.
  • Work at the project site will pause until the spring when weather conditions are agreeable for final paving and chip sealing. More project information will be made available when work resumes.
  • If you have any questions, please call 406-207-4484 or send me an email at Kristine@bigskypublicrelations.com. We are here to address your concerns throughout the project.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

Previous Updates

March 1-5, 2021

  • Q: What do you call a deer without eyes?
    A: No eye deer
    (Joke courtesy of our Engineering Project Manager, Matt)
  • Exciting things are happening at the Old MT 200 project this week. Crews will be adding topsoil to the riprap and seeding the slope that connects the wall to the riverbed. And…
  • MT 200 will reopen to two lanes of traffic by midweek! I know you are as excited as we are.
  • Following the seeding and general clean-up at the project site, there will be a pause in construction until the weather is appropriate for paving. Once warm and dry enough, crews will return for a short period to finish the final milling and paving of the roadway.
  • If you have any questions, please call 406-207-4484 or send me an email at Kristine@bigskypublicrelations.com. We are here to address your concerns throughout the project.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

February 22-26, 2021

  • Why did the traffic light turn red?
    You would turn red too if you had to change in the middle of the road.
  • In the coming week, crews at the Old MT 200 site will be turning their attention from concrete to riprap. When all of the riprap is placed, it will create a slope from approximately halfway up the erosion wall to the bank of the river. The rock will then be covered in topsoil in preparation for revegetation.
  • I received an email last week from a resident who was curious about the traffic signals at the project site. Here are a few fun facts about these lights.
    • The lights are solar powered. The crew regularly clears the snow from the lights to maintain exposure to the sun.
    • In the event the weather is not cooperating, the lights can be charged manually.
    • One of the signals is equipped with a small wind turbine as an added power source.
    • The lights at the Old MT 200 site are called smart signals. These lights have cameras that can view traffic in two directions. The camera monitors the car count at each light and changes accordingly to keep traffic moving smoothly through the project area.
    • If necessary, the lights can be changed manually to allow for large construction equipment to travel safely through the work zone.
    • If necessary, the lights can be changed manually to allow for large construction equipment to travel safely through the work zone.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

February 15-19, 2021

  • Who always has a date on Valentine’s Day?
    A calendar!
  • Love is in the air and we are in the home stretch for completion of the erosion wall. Crews will pour the final sections of the concrete facing this week.
  • Once the concrete facing is completed, the remainder of the riprap and topsoil will be added. Crews will then focus on guardrail and road work. Much of this work is weather dependent, so keep your fingers crossed that Mother Nature is feeling the love over the next several weeks.
  • We appreciate the patience of the community while we work to complete this complicated project. You have “bulldozed” your way into our hearts! We really “dig” your support! We can’t “drill” this point home enough, nothing could “erode” our appreciation for you!
  • Traffic will continue to flow on a single lane near Marshall Canyon Road.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

February 8-12, 2021

  • This week rocks! Crews will be installing riprap along various sections of the erosion wall. Riprap is large, loose stone used to add another level of protection against erosion.
  • I dug up some facts about riprap, here’s the dirt.
    • Riprap can range in size from 6 to 30 inches in diameter.
    • The Riprap used at the Old MT 200 site measures 12 to 24 inches in diameter and can weigh as much as 150 pounds each.
    • Riprap is sometimes referred to as shot rock, rock armor or rubble.
    • Riprap helps encourage wildlife by creating habitats.
    • Riprap can protect the bank from river currents as well as diminish erosion caused by rainfall.
  • The addition of riprap will strengthen the erosion resistance of the wall and provide protection for many years to come. That is something we don’t take for granite!
  • I really hate rock puns.
    My sediments exactly.
  • In addition to riprap, crews will be setting forms for pouring the final sections of the concrete facing.
  • Traffic will continue to flow on a single lane near Marshall Canyon Road.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

February 1-5, 2021

  • Two guys are standing on opposite banks of a river. One yelled to the other, “How do I get to the other side?” The second yelled back, “You are on the other side.”
  • Work continues at the Old MT 200 Erosion Repair project and crews are making steady progress on the concrete facing of the erosion wall.
  • When completed, this erosion wall will protect the bank and the roadway from the effects of high and fast-moving water from the Clark Fork River.
  • The Clark Fork River is one of Montana’s most impressive bodies of water. Here are some interesting things you may not have known about the Clark Fork.
    • The Clark Fork stretches across approximately 300 miles of Montana.
    • The river is home to whitefish, northern pike, smallmouth bass and six different species of trout.
    • It is the largest river, by volume, in Montana.
    • Lake Missoula is the result of an ice dam that formed on the Clark Fork River.
    • Interstate 90 crosses the Clark Fork River 17 times.
  • Additional sections of the erosion wall will be poured in the coming week, putting us one step closer to completion of the project. Traffic will continue to flow on a single lane near Marshall Canyon Road.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

January 25-30, 2021

  • Want to hear a joke about construction?
    Sorry, I’m still working on it.
  • Work continues at the Old MT 200 Erosion Repair project and crews are focused on the construction of the concrete facing of the erosion wall.
  • There are 14 sections of the erosion wall, each measuring approximately 32 x 30 feet. One section of the wall contains 50 cubic yards of concrete. One cubic yard of concrete weighs 4,050 pounds. That means each section of the Old MT 200 wall weighs a whopping 101 tons. Pouring this wall is no small task and crews are working hard to ensure each section is done well.
  • Crews are removing the forms from completed sections and resetting them in preparation for new pours this week. Traffic will remain open on a single lane through the project area.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

January 18-22, 2021

  • Q: Where do construction workers go for fun?
    A: The rebar
  • Work continues at the Old MT 200 Erosion Repair project and crews are focused on tying rebar and pouring concrete.
  • What is rebar and why is it so important? Rebar, short for reinforcement bar, refers to steel bars that provide additional support to large concrete structures. Concrete can withstand quite a bit of compression but is less resilient to tension. Tension often causes concrete to crack. Rebar prevents cracked concrete slabs from moving apart. The rebar being installed at the Old MT 200 site will ensure that the concrete facing of the erosion wall will remain in good condition for many years.
  • Additional sections of the concrete facing will be poured this week. The majority of the sections on the west side of the culvert are set. The concrete facing is steadily taking shape as crews continue to pour new sections each week.
  • Traffic will remain open on a single lane near Marshall Canyon Road.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

January 11-15, 2021

  • They say the worst part of life is waiting, the best part of life is having something worth waiting for.
  • Concrete work continues at the Old MT 200 Erosion Repair project. Crews will be pouring additional sections of the wall this week. The concrete forms give the wall a beautiful textured finish.
  • Traffic will remain open on a single lane near Marshall Canyon Road.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.
  • Concrete Facia

January 4-8, 2021

  • They say an optimist stays up until midnight to see the new year in. A pessimist stays up to make sure the old year leaves. Either way, I am sure we are all ready to put 2020 in the rearview and enter into a brighter 2021.
  • At the Old MT 200 project site, crews are ringing in the new year with continued concrete work. Crews have been tying rebar and setting forms. New sections of the concreting facing will be poured this week.
  • Traffic will remain open on a single lane near Marshall Canyon Road.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

December 28–January 1, 2021

  • Work will resume on the Old MT 200 site December 28-30 and will pause again December 31 and January 1.
  • While on site, crews will be tying rebar in preparation for pouring additional sections of concrete.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

December 21-25, 2020

  • Work continues on the Old MT 200 Erosion Repair project.
  • The crew has poured the first section of the wall and will be pouring two more sections over the next few days. Concrete work is anticipated to continue for several weeks.
  • Did you know?
    • Thomas Edison has over 49 patents that use concrete. Some of his ideas dabbled on concrete houses and even concrete furniture to match.
    • According to the Washington Post, China has used more cement during the years 2011-2013 than the United States concrete use in the entire 20th century.
    • The Three Gorges Dam on the Yangtze River in China is the heaviest concrete structure in the world. How heavy is it? The Dam is said to contain 144,309,356,753.51 pounds of concrete.
  • Work will pause beginning December 24 in observance of the Christmas holiday and will resume January 4. Although crews will not be present during the holiday break, traffic will remain open on a single lane and speeds will be reduced through the area.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

December 14-19, 2020

  • Construction is progressing on the Old MT 200 Erosion Repair project for the week of December 14.
  • Preparations for the concrete work are moving forward. Concrete will be poured on the first section of the wall on Monday.
  • Did you know?
    • Concrete is one of the most widely used materials for underwater structures. This is because concrete has a very high resistance to both fire and water.
    • While concrete does not have a melting point, a temperature of a thousand degrees Fahrenheit will decompose the concrete. This means that the heat will evaporate the water and turn the sand and gravel into molten lava.
    • The Empire State Building, which was the tallest structure in the world when it was built, used a whopping 62,000 cubic yards of concrete.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.
  • Old MT 200 Crane
    Old MT 200 Crane
    Click on the image for a larger view

December 7-11, 2020

  • Construction is progressing on the Old MT 200 Erosion Repair project for the week of December 7.
  • It's all about the concrete at the project site. Crews continue to set forms and tie rebar in preparation for the concrete pour. This is a very important part of the construction. Crews are working hard to ensure the concrete gets poured right the first time.
  • Large forms are being installed on the front of the wall using a large crane. The form will create texture on the facing, the decorative front of the erosion wall.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

November 30 - December 4, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of November 30.
  • Drainage composite is being added to the erosion wall.
  • Fun Fact: Most structures like this fail because of the build-up of pressure behind the wall caused by ground water or moisture accumulation in the soil. This is true for large structures like erosion walls as well as much smaller retaining walls used for landscaping.
  • Adding the drainage composite allows ground water to collect and to flow from behind the erosion wall through weep holes.
  • The forms are up, and concrete work will continue in the upcoming week. The wall will be poured in sections. Crews will pour a 32-foot sections, skip a 32-foot section, then pour another 32-foot section. This will continue until all sections are complete. Using this process ensures the large sections are able to cure properly before another section is added next to it.
  • I was going to make a cement joke, but I couldn't think of anything concrete.
  • Many drivers who travel this section of road frequently will be pleased to hear that asphalt has been added to the lane closest to the wall. That means travelers will enjoy a pothole-free drive when the road reopens to two lanes later this winter.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

November 23-27, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of November 23.
  • Tieback installation is complete. This week crews will be setting forms and pouring concrete on the first section of the wall. Pouring the wall in sections ensures the concrete is strong and sets properly.
  • Fun Fact: Concrete never stops curing. As long as cement particles are in contact with even the smallest amount of moisture, it will continue to form bonds. Although it is minimal after the cement reaches a certain level of strength, the curing process is continual. According to engineers, the core of the Hoover Dam continues to cure in spite of being constructed in 1935.
  • Work will pause at the Old MT 200 site on Thursday and Friday in observance of the Thanksgiving holiday.
  • If you will be traveling for the holidays, please remember to travel safely, buckle up and drive sober.
  • At this time of Thanksgiving, we would like to express our gratitude to our community for your support and patience while we complete this important project. Thank you!
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

November 16-20, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of November 16.
  • The fourth and final row of tiebacks have been set and tensioned. Lagging installation is complete and preparation will begin for pouring the concrete facing of the erosion prevention wall. Crews will set concrete forms this week.
  • The concrete pour is weather sensitive. While the weather is currently predicted to cooperate, extreme cold could affect the timeline of this work.
  • Traffic continues to move on a single lane near Marshall Canyon Road. I 90 is now open to four lanes of traffic, and drivers are encouraged to take alternate routes wherever possible.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

November 9-13, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of November 9.
  • Excavation is finished and crews are approaching completion of the final row of tiebacks. The erosion prevention wall consists of four rows of tieback supports, each carefully drilled, installed, grouted, set, and tensioned to secure the large vertical supports to the soil.
  • Crews are also installing lagging on the erosion wall. Lagging consists of timber planks installed horizontally between the soldier piles, or vertical steel beams. Lagging prevents soil from moving into the excavated area.
  • Traffic continues to flow on a single lane through the project area. A smart signal is in place to monitor traffic and guide drivers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

November 2-6, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of November 2.
  • Early snowfall and single-digit temperatures caused some delays early last week. Crews are working hard and anticipate completion of the third row of tiebacks this week. Excavation for the fourth and final row of tiebacks may begin this week as well.
  • A special culvert passes under the highway from the Clark Fork River to Marshall Canyon Creek. This conduit houses a fish ladder that allows fish to migrate upstream. A fish ladder consists of a series of small elevated steps, or ascending pools. Fish can navigate the ladder by jumping against the cascading water, resting in the pool and repeating the process until they have bypassed the obstacle; in this case, Highway 200. Each fish ladder is different and designed to suit the needs of the area and the fish that will be utilizing it.
  • As construction on the erosion wall progresses toward the river, special care must be given to the fish ladder. The erosion wall has been specially engineered to accommodate this fish ladder and protect access from the Clark Fork River to Marshall Canyon Creek.
  • Traffic continues to flow on a single lane through the project area. A smart signal is in place to monitor traffic and guide drivers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

October 26-30, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of October 26.
  • Tieback installation has passed the halfway mark and crews are working on the installation of the third row. Excavation for the fourth and final row of these horizontal supports is anticipated to begin this week.
  • Traffic continues to flow on a single lane through the project area. A smart signal is in place to monitor traffic and guide drivers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Remember the Three S’s of work zone safety: speed, space and stress. Slow down when approaching work zones and follow posted speed limits. Leave adequate braking room between your vehicle and the one ahead of you and don’t pass on the shoulder. Keep your cool, pay attention and plan for delays. These workers spend their days working a short distance from fast moving vehicles, and while they make every effort to work safely, they are counting on you to pay attention, slow down and be careful as you pass through a work zone.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

October 19-23, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of October 19.
  • Tiebacks are being added in systematic rows to the erosion prevention wall.
  • Installation of tiebacks is, essentially, a four-step process. First, a hole is drilled through the pile, or vertical beam. Next, the tieback is inserted into the pre-drilled hole. Grout is then poured down the hole and sets the tieback in place. Once the grout is set, tension is added to the tiebacks and the tiebacks are locked to the piles. This process tightly ties the vertical supports to the soil.
  • Tieback Installation
  • Once a row of tiebacks is in place, crews can excavate down the wall and begin installation of another row.
  • Tieback Installation
  • The Old MT 200 project will require four rows of tiebacks. Crews have completed the second row and will begin excavation and installation of tiebacks on the third row this week.
  • Traffic continues to flow on a single lane through the project area. A smart signal is in place to monitor traffic and guide drivers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

October 12-16, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of October 12.
  • Crews are continuing with the installation of tieback supports along the erosion wall. These are the braided steel cables that extend back into the soil and, once set with grout, are tensioned against vertical steel beams.
  • The first row of tiebacks has been installed and tensioned. Crews have completed the next phase of excavation and installation of the second row of tiebacks will begin this week.
  • Traffic continues to flow on a single lane through the project area. A smart signal is in place to monitor traffic and guide drivers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

October 5-9, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of October 5.
  • Crews are continuing with the installation of tieback supports along the erosion wall. The tiebacks consist of braided steel cables that extend back into the soil. Grout is poured through the tiebacks to create an anchor. Once the grout has cured, tension is applied to the tiebacks and they are locked into place on the piles, or vertical steel beams.
  • Crews will begin excavating this week in preparation for the installation of the next row of supports. The erosion wall will require four rows of tieback supports.
  • Traffic continues to flow on a single lane through the project area. A smart signal is in place to monitor traffic and guide drivers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

September 28–October 2, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of September 28.
  • Vertical supports, or soldier piles, are in place and crews have begun excavating the area to prepare for the installation of lagging and tiebacks. Lagging are wood boards that are placed between the soldier pile. Once placed, the space behind the boards will be filled with concrete. Tiebacks are horizontal supports that are also secured with concrete.
  • Traffic continues to flow on a single lane through the project area. A smart signal is in place to monitor traffic and guide drivers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

September 21-25, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of September 21.
  • The soldier pile, or large vertical beams, are almost complete and crews have begun the process of installing soil anchors called tiebacks. A grout is added through the hollow tieback rods and out the other end to fill any voids in the soil around the rod. When the grout sets, the tiebacks are tensioned and bolted to the soldier piles. This creates an anchor that adds stability to the erosion wall.
  • Traffic is flowing on a single lane through the project area. A smart signal is in place to monitor traffic and guide drivers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Don't forget to check out the project webcam.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

September 14-18, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of September 14.
  • Old MT 200 will reopen to through traffic on a single lane beginning Friday, September 11 at 6:00 pm.
  • Crews are installing soldier pile, or large vertical steel beams, to create a support structure for the erosion prevention wall. This process will continue for the coming weeks.
  • Traffic is being monitored by a smart signal to guide travelers through the work zone. Drivers are encouraged to plan ahead for potential delays.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

September 7-11, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of September 7.
  • Old MT 200 will reopen to through traffic on a single lane beginning Friday, September 4 at 6:00 pm and will remain open through the Labor Day weekend.
  • Although no active construction will be taking place on Labor Day, Sept. 7, MDT reminds drivers to continue to follow all posted signage, reduce speeds in work zones, and be mindful of changing road conditions.
  • Crews are installing the large supports for the erosion prevention wall. Drilling is taking place for installation of both vertical beams and horizontal rods that will act as the primary support for the erosion wall. This process will continue for the coming weeks.
  • Due to the oversized equipment required to complete this work, Old MT 200 will be closed again beginning on Tuesday, September 7 at 6:00 am through Friday, September 11. Access to Marshall Canyon Road will remain open on the East Missoula side.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

August 31-September 4, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of August 31.
  • Crews have begun construction on the new erosion wall. Large equipment necessary for drilling and placing steel supports are too large to be accommodated in a single lane. Closure of MT 200 to through traffic is necessary to complete this work.
  • Closures began on August 24 and will continue through September 4. The road will open to single-lane travel over the weekend, August 29 and 30, and close again on Monday, August 31 for the duration of the week. Drivers should seek alternate routes.
  • Access to Marshall Canyon Road will remain open at all times on the East Missoula side.
  • Width restrictions of 14 feet are in place during the closure. On August 29 and 30, while the road is temporarily open to single-lane travel, widths will be restricted to 13 feet.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

August 24-28, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of August 24.
  • With the temporary wall in place, crews will begin construction of the permanent structure. This week, drilling and placement of soldier piles will begin. Soldier piles are H-shaped support beams that are driven into pre-drilled holes. The installation of tiebacks may also begin this week. Tiebacks are rods positioned horizontally into the soil to create additional support to the wall.
  • Traffic continues to flow on a single lane through the project area. Traffic signals are moving cars efficiently through the area, but drivers are encouraged to plan ahead for potential delays or take alternate routes.
  • Road Closure Information
    Starting on the evening of Monday, Aug. 24, Old MT 200 crews will be implementing a closure to through traffic on Highway 200 at Marshall Canyon Road.
  • The east side of Marshall Canyon on Highway 200 will be closed from August 24 at 6 p.m. until August 28 at 8 p.m., open to single-lane traffic over the weekend (August 29 and 30) and closed again to through traffic from August 31 at 6 a.m. until September 4 at 8 p.m.
  • At this time the road will be restored to single-lane through traffic. Access to and from Marshall Canyon road will always be available from the west side via East Missoula. Updates for the through closures will be provided via message boards.
  • As the roadway is being stabilized near the river, crews now do not have adequate distance between the roadway barrier rail and the area by the river to complete their work. This then will require crews to shut down an additional lane for everyone's safety.
  • It is important to note that all emergencies will be dealt with most efficiently and safely possible. Immediately upon becoming aware of any emergency or approaching emergency vehicles on-site, the contractor will work in unison with all construction personnel to move any emergency vehicle(s) through the work zones to their destination(s) in a manner that is the safest to the vehicle, its passenger(s), the traveling public and the construction crews.
  • Our project hotline is open for questions between 9:00 am and 5:00 pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

August 17-21, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of August 17.
  • Crews have removed the existing stabilizing structure and have begun installation of a temporary mechanically stabilized earth (MSE) wall.
  • The temporary mechanically stabilized earth (MSE) wall is in place. More equipment will be arriving on-site this week and preparations for placement of the soldier piles will begin. Traffic is reduced to a single lane. Smart signals are monitoring traffic flow to keep vehicles moving efficiently through the area. Drivers can expect reduced speeds and are encouraged to plan ahead for potential delays or take alternate routes when possible.
  • Our project hotline is open for questions between 9:00 am and 5:00pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

August 10-14, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of August 10.
  • Crews have removed the existing stabilizing structure and have begun installation of a temporary mechanically stabilized earth (MSE) wall.
  • Traffic is reduced to a single lane. Smart signals are monitoring traffic flow to keep vehicles moving efficiently through the area. Drivers can expect reduced speeds and are encouraged to plan ahead for potential delays or take alternate routes when possible.
  • Our project hotline is open for questions between 9:00 am and 5:00pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

August 3-7, 2020

  • Construction continues on the Old MT 200 Erosion Repair project for the week of August 3.
  • Crews are on-site near Marshall Canyon Road and the erosion repair is well underway. The process of removing the existing stabilizing structure has begun. Barrier rail has been set and asphalt has been removed.
  • Traffic is reduced to a single lane. Smart signals are monitoring traffic flow to keep vehicles moving efficiently through the area. Drivers can expect reduced speeds and are encouraged to plan ahead for potential delays or take alternate routes when possible.
  • Our project hotline is open for questions between 9:00 am and 5:00pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.

July 27-31, 2020

  • The Old MT 200 Erosion Repair project will begin on Monday, July 27.
  • Heavy spring runoff and flooding in 2019 caused significant erosion between the Clark Fork River and Old MT 200 between East Missoula and Bonner near Marshall Canyon Road.
  • The repair will include removal of the existing structure and replacing it with a new erosion prevention structure. This process consists of anchoring a concrete wall to structural supports in the soil behind it. Portions of Old MT 200 will be replaced as well.
  • Closure of one lane on MT 200 is necessary to complete this work. A smart signal will be in place to monitor traffic flow and minimize delays. Drivers can expect reduced speeds and delays of up to 20 minutes. Please plan additional time to travel through the area.
  • Our project hotline is open for questions between 8:00 am and 5:00pm, Monday through Friday. Call 406-207-4484 to reach us. Text updates are also available. To register, text OLDMT200 to 41411.