September 3, 2025 4:30 AM

This report is available by telephone at 511 or 1-800-226-7623. For the hearing impaired, call the TTY number 1-800-335-7592.

For additional information call (406) 444-6372

TRAFFIC FINES DOUBLE in highway work zones. The law also sets fines and jail sentences for reckless endangerment of highway workers.

MINOR DELAYS (up to ten minutes) can be expected through these projects with anything over ten minutes being noted in the description. Watch for equipment, flaggers, and workers along the road. Expect reduced speed limits.


Active Construction Projects

I-15 - Mile Marker 278 to 278.5
Road Work
DRILLING OPERATIONS WATCH FOR WORKERS AND EQUIPMENT ON 09/08 AND 09/09
EXPECT: Lane closures, Speed Limit (mph) - 45
I-90 - Mile Marker 2.5 to 6.5
Road Work
Currently there is single lane traffic and reduced speed limits on I-90 eastbound and westbound from mile post 2.5 to 6.5, near Lookout Pass. Expect a 13-foot width restriction for eastbound and westbound traffic at all hours. Loads over 13 feet wide must be piloted through the project area. Note: Modular or mobile style homes with eaves out to 14 feet wide are allowed through the project area without piloting. Two-way traffic will be set up in the eastbound lanes of I-90 from mile post 3 to 6. Loads affected by the width restriction will be piloted through the project Monday through Friday. Staging time will be 7:00 am MST. Eastbound staging area is located on I-90 at mile post 68 in Idaho. Westbound staging area is located on I-90 at mile post 16 in Montana at the Haugan weigh station. There will be NO PILOTING on Monday Sept. 1 Labor Day. For more information call (406) 360-8187 between the hours of 8:00 am and 5:00 pm Monday through Friday. The I-90 WEST Freeway Entrance Ramp near MP 5.7 at Taft will be CLOSED and westbound traffic will need to enter I-90 EAST and take Exit 10 at Saltese Interchange then detour back onto I-90 WEST via the I-90 WEST Entrance Ramp. EB I-90 cyclist can opt to travel on detour along USFS Hanaker Creek road 455, currently the WB I-90 shoulder is not safe for Cyclist nor is there a detour.
EXPECT: Median crossover detours, Speed Limit (mph) - 35-55
EXPECT: Width Limit 13 ft
More Information
I-90 - Mile Marker 55 to 59
Road Work
Road work on I-90 eastbound and westbound from mile post 55 to 59. Expect left lane closures and reduced speeds while work is in progress. Median cable rail installation operations will take place Monday through Friday.
EXPECT: Left lane CLOSED, Speed Limit (mph) - 55
More Information
I-90 - Mile Marker 115.9 to 119.5
Road Work
Installing traffic sensors in the WB lanes.
EXPECT: Lane closures, Speed Limit (mph) - 35
EXPECT: Width Limit 14 ft
I-90 - Mile Marker 116 to 120
Road Work
Road work on I-90 eastbound and westbound from mile post 116 to 120. Expect left lane closures and reduced speed limits while work is in progress. Median cable rail installation operations will take place Monday through Friday and occasionally on Saturdays, including early morning work.
EXPECT: Lane closures, Speed Limit (mph) - 55
More Information
I-90 - Mile Marker 144.6 to 145.7
Road Work
Roadway & roadside safety improvements on the D1 Guardrail & Fencing (I-90) project on I-90 located in three sections within the MDT Missoula District. The work includes replacing existing deteriorated fence and guardrail.
I-90 - Mile Marker 155 to 167
Road Work
Shoulder Closures.
EXPECT: Speed Limit (mph) - 45
I-90 - Mile Marker 234 to 236
Road Work
I-90 eastbound and westbound traffic will be detoured through the Homestake Pass Parking Area. No parking will be allowed in the parking area.
EXPECT: Detour, Lane closures, Speed Limit (mph) - 35
I-90 - Mile Marker 309 to 319
Road Work
Paving and bridge work on I-90 EB and WB. Expect single lane closures and speed reductions. **A 10-Foot width and 95-foot length restriction excluding double and triple combinations is in effect 7am-7pm, Monday-Friday. A 12-foot width and no length restriction is in effect at all other times**
EXPECT: Motorcycles consider alternate route, Lane closures, Speed Limit (mph) - 35, Travel Delay (mins), Flaggers
EXPECT: Width Limit 10 ft
More Information
I-90 - Mile Marker 417 to 427
Road Work
Expect single lane closures, and median crossovers, throughout the project in both East and West bound lanes due to milling and paving operations. Speeds reduced to 45mph. 16 FT width restriction. Loads exceeding 16 FT wide will be escorted through the project Monday thru Friday between the hours of 4:30am and 6:30am. Call 406-671-5220 for information on wide load escorting.
EXPECT: Speed Limit (mph) - 45, Lane closures, Median crossover detours, Travel Delay (mins)
EXPECT: Width Limit 16 ft
I-94 - Mile Marker 7 to 24
Road Work
Pavement marking and miscellaneous work in progress. Watch for workers and equipment. Stay off the wet paint lines.
I-94 - Mile Marker 186.7 to 192.2
Road Work
Interstate reconstruction work. Two-way traffic configuration in the westbound lanes using crossovers, reduced speed limit, and varying width restrictions due to road work on I-94 from mile post 186.7 to 192.2, between the Bad Route Interchange and Fallon. WB width restriction is 16 feet, and the EB width restriction is 13 feet. Vehicles affected by these restrictions must use an alternate route. Oversized load piloting is not available due to construction location.
EXPECT: Median crossover detours, Lane closures, Speed Limit (mph) - 55
EXPECT: Width Limit 16 ft
US-2 - Mile Marker 125 to 130
Road Work
Intermittent lane/road closures and reduced speed to 35 MPH due to Resurfaced Roadway Improvements. Daytime construction operations scheduled to begin June 16th and continue thru Friday, September 5th 2025. Weather and other factors permitting. Please watch for workers and equipment.
EXPECT: Detour, Motorcycles consider alternate route, Speed Limit (mph) - 35, Travel Delay (mins), Pilot vehicles, Lane closures, Signal lights
US-2 - Mile Marker 416.7 to 423.9
Road Work
Travelers can expect short delays and multiple work zones throughout the project guided by pilot car and signals during daylight hours Monday through Saturday and reduced speeds otherwise. Surfaces are pulverized gravel and cement treated gravel throughout the project. For additional information, please call 406-465-7198
EXPECT: Signal lights, Motorcycles consider alternate route, Pilot vehicles, Travel Delay (mins), Speed Limit (mph) - 35
More Information
US-12 - Mile Marker 0 to 0.91
Road Work
Shoulder and Lane Closures. A minimum of two lanes will be open. Pedestrians may expect intermittent sidewalk closures.
EXPECT: Lane closures, Speed Limit (mph) - 35
US-12 - Mile Marker 3
Road Work
WATCH FOR WORKERS
EXPECT: Flaggers, Speed Limit (mph) - 35, Lane closures
US-12 - Mile Marker 33 to 41.7
Road Work
Mill and fill with a chip seal. 12-foot width restriction in effect Monday through Friday 6am-8pm due to construction.
EXPECT: Travel Delay (mins), Speed Limit (mph) - 35, Pilot vehicles, Signal lights
EXPECT: Width Limit 12 ft
US-12 - Mile Marker 45.3 to 46
Road Work
Prospect Ave WB from 18th ST to Montana Ave. (11th Ave is not impacted) Shoulder and Lane Closures. A minimum of two lanes will be open. Pedestrians may expect intermittent sidewalk closures.
EXPECT: Lane closures, Speed Limit (mph) - 35
US-12 - Mile Marker 230 to 260
Road Work
This project consists for a series of small sites within that 30 mile stretch. They project will finish at the end of July2027 with chip seal and epoxy striping. Traffic will be divert to a temporary lane when existing structures are removed.
EXPECT: Lane closures, Flaggers, Motorcycles consider alternate route, Speed Limit (mph) - 25, Travel Delay (mins)
EXPECT: Width Limit 14 ft
US-87 - Mile Marker 37.5 to 40
Road Work
End of pavement milled and dirt surface work. Lane and width restrictions during work hours, 5 am to 8 pm, Monday through Saturday. Loads over 16 feet wide are prohibited through the project area during work hours. For questions about the project or for routing assistance, contact Lisa Olmsted with DOWL at (833) 377-0453 or by email at mt200@dowl.com. PILOT CAR UNTIL 5 PM
EXPECT: Travel Delay (mins), Signal lights, Pilot vehicles, Speed Limit (mph) - 35, Motorcycles consider alternate route
EXPECT: Width Limit 16 ft
More Information
US-89 - Mile Marker 20.3 to 24.7
Road Work
Ongoing work should have limited effect on traffic. Sidewalk and drain work finishing up this week. Rotomilling expected to start by August 25, followed by paving. Motorcycles advised to use alternate route.
EXPECT: Pilot vehicles, Motorcycles consider alternate route, Flaggers, Speed Limit (mph) - 35, Lane closures, Signal lights
US-93 - Mile Marker 84.15 to 84.35
Road Work
Construction of a Left-hand Turn Lane at the intersection of US-93 and Montibello Lane. Highway widening, new signage, new pavement markings and the reconstruction of the Montibello Lane approach.
EXPECT: Travel Delay (mins), Speed Limit (mph) - 35, Lane closures
US-93 - Mile Marker 113.15 to 113.17
Road Work
Construction will occur at the intersection of US-93 and Wyoming during the Night between 7:00 P.M. to 7:00 A.M.. Weather and other limitations may impact the start/stop times mentioned. Traffic will be controlled by temporary signals until new signals are installed. Single Lane closures on US-93 will be present during the working hours. Watch for workers and equipment along the road.
EXPECT: Lane closures, Signal lights, Speed Limit (mph) - 35, Travel Delay (mins)
More Information
US-93 - Mile Marker 115.6 to 115.8
Road Work
Work will take place between the hours of 7 pm to 7 am Sunday through Thursday. During construction expect single lane traffic on US-93. Treeline will be closed will work is in progress. Please be aware of workers and equipment throughout the work zone.
EXPECT: Speed Limit (mph) - 35, Lane closures
More Information
US-93 - Mile Marker 129.7 to 133
Road Work
LOOSE GRAVEL ON ROAD MM 129-133 Motorcycles consider alternate route due to loose gravel on road
EXPECT: Motorcycles consider alternate route, Speed Limit (mph) - 35, Flaggers, Pilot vehicles, Signal lights, Lane closures, Travel Delay (mins)
US-191 - Mile Marker 83 to 85
Road Work
Construction personnel and equipment working near the highway. Use caution.
EXPECT: Speed Limit (mph) - 35-70
More Information
US-191 - Mile Marker 90.223 to 90.23
Road Work
EASTBOUND RIGHT LANE OF MAIN STREET CLOSED 24 HOURS/DAY FOR UTILITY WORK 08/20 - 08/22/25.
EXPECT: Right lane CLOSED, Speed Limit (mph) - 25
US-310 - Mile Marker 25.7 to 26.22
Road Work
Sidewalk work in progress. Watch for workers and equipment in the town of Bridger. Posted speed limit of 25mph.
EXPECT: Speed Limit (mph) - 25
More Information
MT-1 - Mile Marker 8.37
Road Work
ADA sidewalk and traffic signal work. Sidewalk walk and lane closures to be expected. Pedestrian detours will be put in place. WATCH FOR SLOW MOVING EQUIPMENT
EXPECT: Lane closures
MT-37 - Mile Marker 0.6 to 0.8
Road Work
Bridge work starting 04/14/2025. 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays.
EXPECT: Travel Delay (mins), Lane closures, Signal lights
EXPECT: Width Limit 10 ft
MT-37 - Mile Marker 13.78 to 13.95
Road Work
Bridge work starting 04/14/2025. 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays.
EXPECT: Travel Delay (mins), Signal lights, Lane closures
EXPECT: Width Limit 10 ft
MT-37 - Mile Marker 23.33
Road Work
Bridge work starting 04/14/2025. 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays.
EXPECT: Lane closures, Signal lights, Travel Delay (mins)
EXPECT: Width Limit 10 ft
MT-37 - Mile Marker 29.4
Road Work
Bridge work starting 04/14/2025. 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays.
EXPECT: Signal lights, Lane closures, Travel Delay (mins)
EXPECT: Width Limit 10 ft
MT-37 - Mile Marker 48.5
Road Work
Bridge work starting 04/14/2025. 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays.
EXPECT: Travel Delay (mins), Lane closures, Signal lights
EXPECT: Width Limit 10 ft
MT-44 - Mile Marker 0 to 14.1
Road Work
Road construction will consist of work on 5 separate dig-outs and culvert replacements scattered through-out the 14-mile project. Active work zones will be controlled with 24-hour pilot car operations during the work week, and two-way traffic with reduced speeds in construction areas during the weekends. Traveling surfaces will consist of pavement and areas of loose gravel.
EXPECT: Pilot vehicles, Speed Limit (mph) - 35, Motorcycles consider alternate route, Signal lights
EXPECT: Width Limit 14 ft
MT-59 - Mile Marker 25.5 to 27.8
Road Work
Expect to encounter intermittent lane closures. A width restriction of 14 feet is in effect during working hours Monday through Friday 6:00 AM to 7:00 PM.
EXPECT: Travel Delay (mins), Pilot vehicles, Flaggers, Signal lights, Lane closures, Detour, Speed Limit (mph) - 35, Motorcycles consider alternate route
EXPECT: Width Limit 14 ft
MT-82 - Mile Marker 4.5 to 6.9
Road Work
Sportsman Bridge Project Crews will be on site starting Monday through Friday, from 6 am to 6 pm. All work is dependent on the weather and other unforeseen factors. There are no anticipated traffic disruptions currently except a reduced speed limit at shoulder work locations. Watch for workers and equipment entering and exiting the project area.
EXPECT: Speed Limit (mph) - 35
More Information
MT-83 - Mile Marker 77.1 to 77.4
Road Work
LANE CLOSURES AND REDUCED SPEED TO 35 MPH FOR UTILITY RELOCATION WORK. WATCH FOR FLAGGERS.
EXPECT: Flaggers, Speed Limit (mph) - 35, Lane closures
MT-86 - Mile Marker 24.1 to 28.1
Road Work
Speed reduced to 35 mph due to single lane traffic over two bridges with 12-foot width limit. Motorcycles consider alternate route due to gravel surfaces at bridge ends.
EXPECT: Speed Limit (mph) - 35, Motorcycles consider alternate route
EXPECT: Width Limit 12 ft
MT-200 - Mile Marker 17
Road Work
Loads over 10 feet wide are prohibited through the project area due to the narrow bridge.
EXPECT: Speed Limit (mph) - 35, Lane closures, Signal lights
EXPECT: Width Limit 10 ft
MT-200 - Mile Marker 38.4 to 49.3
Road Work
Road work on MT-200, East of Richey. Expect alternating traffic, reduced speed limit, and 12 foot width restriction during work hours. Work hours are Monday through Friday between 7:00 am and 7:00 pm. Loads over 10 feet wide must call Eric Kalfell at (406) 671-0907 to schedule passage through the project. Detours will be used during work on pipes.
EXPECT: Travel Delay (mins), Pilot vehicles, Signal lights, Lane closures, Detour, Motorcycles consider alternate route, Speed Limit (mph) - 35-55
EXPECT: Width Limit 12 ft
MT-200 - Mile Marker 93 to 108
Road Work
Road work on US-87 for 15 miles between Lewistown and Grass Range. Bridge work, realignment of curves, and widening of shoulders. Traffic control configurations may vary through the project area. Expect areas of no pavement, heavy equipment on the road, and trucks entering the roadway. Traffic control in place between 6:30 am and 7:00 pm. Detour at MM 95 is effective at all hours with speeds limited to 25-35 mph. Two-way traffic will be restored overnight. Loads over 16 feet wide are prohibited through the project area without written permission. For questions about the project or for routing assistance, contact Lisa Olmsted with DOWL at (833) 377-0453 or by email at mt200@dowl.com. JUNE 19 to 20 - Single lane traffic overnight between MM 106 and MM 108
EXPECT: Lane closures, Signal lights, Speed Limit (mph) - 25-35, Pilot vehicles, Motorcycles consider alternate route, Detour, Travel Delay (mins)
EXPECT: Width Limit 16 ft
More Information
MT-200 - Mile Marker 119 to 121
Road Work
Dirt and bridge work on MT-200 between MM 119 and 121. One lane traffic alternating on temporary paved road, controlled by signal lights 7 am to 6pm. Advisory signs at Grass Range and Lewistown. Rough road where pavement has been removed. Loads over 16 feet wide are prohibited through the project area without written permission. For questions about the project or for routing assistance, contact Lisa Olmsted with DOWL at (833) 377-0453 or by email at mt200@dowl.com.
EXPECT: Travel Delay (mins), Speed Limit (mph) - 35, Motorcycles consider alternate route, Lane closures
EXPECT: Width Limit 16 ft
More Information
MT-200 - Mile Marker 192.2 to 201
Road Work
This is a pulverization project and resurfacing. The road will contain loose gravel after the pulverization process. The 14-foot width restriction is during active construction. Could narrow to 12 feet when bridge work is being done.
EXPECT: Signal lights, Lane closures, Flaggers, Pilot vehicles, Travel Delay (mins), Motorcycles consider alternate route, Speed Limit (mph) - 25
EXPECT: Width Limit 14 ft
More Information
MT-200 - Mile Marker 246.8 to 253.5
Road Work
14' WIDTH RESTRICTION FOR STRIPPING TOPSOIL NEAR SHOULDER, WATCH FOR WORKERS AND SLOW MOVING EQUIPMENT
EXPECT: Speed Limit (mph) - 35
EXPECT: Width Limit 14 ft
S-232 - Mile Marker 0.8 to 10
Road Work
Travelers can expect short delays and multiple work zones controlled with a combination of pilot car, signals, and reduced speeds throughout the project. Split lane two-way traffic may be present guided by channelization devices and arrow signs overnight. Driving surface is gravel and some remaining pavement. Work will be performed during daylight hours Monday through Saturday. For questions about the project, call (406) 384-9823
EXPECT: Signal lights, Motorcycles consider alternate route, Pilot vehicles, Speed Limit (mph) - 35, Travel Delay (mins)
More Information
S-252 - Mile Marker 0 to 7
Road Work
Traffic traveling on Unpaved surface.
EXPECT: Speed Limit (mph) - 35, Signal lights, Lane closures, Travel Delay (mins)
EXPECT: Width Limit 16 ft
S-272 - Mile Marker 0
Road Work
ADA sidewalk and traffic signal work. Sidewalk walk and lane closures to be expected. Pedestrian detours will be put in place.
EXPECT: Lane closures
S-275 - Mile Marker 0 to 3.05
Road Work
CRACK SEAL OPERATIONS ON SEPT 3-6 WATCH FOR WORKERS AND EQUIPMENT
EXPECT: Lane closures
S-412 - Mile Marker 0.5 to 2.9
Road Work
Traffic impacts include lane closures starting at 7 p.m. nightly and ending at 7 a.m. the next morning. Please watch for reduced speeds in the construction zone. There will be a 12-foot width restriction in place during working hours.
EXPECT: Travel Delay (mins), Lane closures, Speed Limit (mph) - 25
EXPECT: Width Limit 12 ft
More Information
S-421 - Mile Marker 4.8 to 6.9
Road Work
Construction work starting with fencing and tree removal activities. Watch for construction equipment entering roadway and reduced speeds.
EXPECT: Speed Limit (mph) - 35, Travel Delay (mins)
S-487 - Mile Marker 4 to 6
Road Work
Warranty work to the chip seal will be performed starting on July 30th pending weather and other factors. Work will include applying fresh oil and chips to areas called out for repairs. Fresh fog seal will be performed after chip sealing is performed. This work will be throughout the project limits. Please watch for workers and equipment through out.
EXPECT: Flaggers, Pilot vehicles, Speed Limit (mph) - 35, Signal lights
S-503 - Mile Marker 1.25 to 10.9
Road Work
Intermittent lane closures and reduced speed limit due to the Foys Lake/Canyon/Airport Road Pavement Preservation Improvements Project. Work is scheduled to continue thru September 5th. Weather and other factors permitting. Follow all posted signage and watch for workers.
EXPECT: Lane closures, Flaggers, Travel Delay (mins), Pilot vehicles, Speed Limit (mph) - 35, Signal lights
S-540 - Mile Marker 4 to 5
Road Work
Watch for rocks on the road.
EXPECT: Speed Limit (mph) - 35
S-548 - Mile Marker 0 to 0.4
Road Work
The Whitefish Stage and West Reserve Drive Intersection is being controlled by Temporary Traffic Signals. These will be in place for the duration of the job. The signals will allow 1 direction of travel at a time to accommodate left turns for that direction of traffic. Please plan your travels to allow for additional travel time with this change. West bound and East bound Reserve Dr traffic is currently on a gravel surface and will be through the weekend until April 14. The intersection of Hutton Ranch Road and West Reserve Drive will no longer allow left turning traffic from Hutton Ranch onto West Reserve. The intersection will be configured for Right In-Right Out Access Only. There will be No Left Turns from West Reserve onto Hutton Ranch Road as well. The existing temporary traffic signals will be no longer controlling the intersection. Due to construction activities and lane configurations for construction a 12-foot width restriction will be in place for West Reserve. Please watch for workers and equipment in the project area.
EXPECT: Flaggers, Speed Limit (mph) - 35, Lane closures, Travel Delay (mins)
EXPECT: Width Limit 12 ft
More Information
S-574 - Mile Marker 4 to 4.14
Road Work
Work will be performed on the north side of Hwy. Pedestrian path will be closed for the duration of the project. 8/11 to 9/19
EXPECT: Speed Limit (mph) - 55
EXPECT: Width Limit 12 ft, Length Limit 510 ft

Completed Construction Projects

I-90 - Mile Marker 50 to 54 (Completed)
Road Work
EB RIGHT LANE IS CLOSED - 35 MPH SPEED LIMIT
EXPECT: Speed Limit (mph) - 35, Lane closures, Right lane CLOSED
I-90 - Mile Marker 278 to 289 (Completed)
Road Work
Watch for WORKERS ON ROAD painting lines.
I-90 - Mile Marker 278.5 to 288.5 (Completed)
Road Work
LINE PAINTING IN PROGRESS. WATCH FOR WORKERS ON ROAD.
I-94 - Mile Marker 210 to 211 (Completed)
Road Work
WB LEFT LANE IS CLOSED - 45 MPH SPEED LIMIT
EXPECT: Speed Limit (mph) - 45, Lane closures, Left lane CLOSED
I-94 - Mile Marker 210.6 to 212.7 (Completed)
Road Work
All traffic detoured to eastbound lanes in two-way single lane traffic configuration with 16-foot width restriction.
EXPECT: Speed Limit (mph) - 55, Median crossover detours
EXPECT: Width Limit 16 ft
I-94 - Mile Marker 214.4 (Completed)
Road Work
WB DRIVING LANE IS CLOSED - 45 MPH SPEED LIMIT
EXPECT: Speed Limit (mph) - 45, Right lane CLOSED, Lane closures
US-2 - Mile Marker 11 (Completed)
Road Work
WESTBOUND LANE CLOSED AND SPEED REDUCED TO 35 MPH FOR GUARDRAIL REPAIRS
EXPECT: Lane closures, Speed Limit (mph) - 35
US-12 - Mile Marker 12 (Completed)
Road Work
ALTERNATING ONE LANE TRAFFIC - 35 MPH SPEED LIMIT
EXPECT: Speed Limit (mph) - 35, Lane closures, Flaggers
MT-200 - Mile Marker 56 to 57 (Completed)
Road Work
ALTERNATING LANE CLOSURES, TRAFFIC CONTROLLED BY SIGNAL LIGHTS, UP TO 15 MIN DELAYS, SPEED REDUCED TO 35 MPH.
EXPECT: Travel Delay (mins), Speed Limit (mph) - 35, Signal lights, Lane closures
MT-200 - Mile Marker 324.8 to 325.2 (Completed)
Road Work
Traffic shifted onto a gravel detour during working hours. As overhead demolition/construction is performed.
EXPECT: Speed Limit (mph) - 35, Detour
S-424 - Mile Marker 2 to 13 (Completed)
Road Work
CHIP SEALING - ALTERNATING ONE LANE TRAFFIC - 35 MPH SPEED LIMIT
EXPECT: Pilot vehicles, Lane closures, Speed Limit (mph) - 35

Inactive Construction Projects


N/A