April 27, 2025 8:30 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 362.3 to 364.7
Road Work
Installation of a new box culvert will begin on Monday March 31st. Traffic will be diverted onto a crossover and a 16 foot width restriction will be in place. Northbound wide load staging area will be near RP 362.3. Southbound wide load staging area will be near RP 364.7. Wide load escort hours will be from 6:00 pm to 8:00 pm Monday through Friday only. Wide load phone number is (406) 490-8390 and will be active Monday thru Friday from 8:00 am to 5:00 pm.
EXPECT: Median crossover detours, Speed Limit (mph) - 35
EXPECT: Width Limit 16 ft
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. Effective April 29, 2025: expect a 12-foot width restriction for eastbound and westbound traffic. 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. 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 beware of narrow shoulder, currently the WB shoulder is not safe for Cyclist nor is there a detour.
EXPECT: Median crossover detours, Speed Limit (mph) - 35-55
EXPECT: Width Limit 12 ft
More Information
I-90 - Mile Marker 17.34 to 18.75
Road Work
The SF 209 Missoula South Signs project is to address identified crash trends in Flathead, Granite, Lake, Mineral, Missoula, Ravalli, and Sanders counties. The improvements are a varying combination of signing, flashers, curve signing, and delineation.
EXPECT: Lane closures, Speed Limit (mph) - 35
I-90 - Mile Marker 49.4 to 53.6
Road Work
Contractors installing new fencing. Crews will be working 6:00 AM and 6:00 PM. Possibility of contractor working from shoulder of road through the project area. Estimated project completion date, subject to change, is November 2026. BE AWARE OF EQUIPMENT.
I-90 - Mile Marker 55 to 58
Road Work
Road work on I-90 eastbound and westbound from mile post 55 to 58. Expect 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
More Information
I-90 - Mile Marker 101.69 to 101.76
Road Work
SF 209 Missoula South Signs The SF 209 Missoula South Signs project is to address identified crash trends in Flathead, Granite, Lake, Mineral, Missoula, Ravalli, and Sanders counties. The improvements are a varying combination of signing, flashers, curve signing, and delineation. Some work on this project is located within the boundaries of the Flathead Reservation
EXPECT: Speed Limit (mph) - 35, Lane closures, Travel Delay (mins)
I-90 - Mile Marker 119 to 124.5
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 120 to 132.5
Road Work
Road work on I-90 eastbound and westbound from mile post 120 to 132.5. Expect 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, Left lane CLOSED, Speed Limit (mph) - 55
I-90 - Mile Marker 155 to 167
Road Work
Shoulder Closures.
EXPECT: Speed Limit (mph) - 45
I-90 - Mile Marker 289 to 307.4
Road Work
Lane closures for painting operations from Manhattan Interchange to East of the 7th Ave Interchange in Bozeman. Watch for slow moving equipment.
EXPECT: Lane closures
I-90 - Mile Marker 319 to 330
Road Work
I-90 WEST: single lane traffic and 16-foot width restriction in effect at all hours. I-90 EAST: 16-foot width restriction in effect Monday thru Friday between 6:00 AM and 8:00 PM.
EXPECT: Speed Limit (mph) - 45-60, Lane closures, Flaggers
EXPECT: Width Limit 16 ft
More Information
I-90 - Mile Marker 524 to 532
Road Work
Watch for workers and vehicles. Expect reduced speed limit, 16-foot width limit and single lane traffic in both directions through work zone. The width restriction is effective April 17, 2025. Wide load piloting times have not been determined but will be available for loads over 16 feet. Until piloting times have been determined, loads over these limits are prohibited through the project area after the effective date.
EXPECT: Lane closures, Speed Limit (mph) - 45
EXPECT: Width Limit 16 ft
I-94 - Mile Marker 210.6 to 212.7
Road Work
Effective April 14, 2025 at 7:00 AM: 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
US-2 - Mile Marker 416.7 to 423.9
Road Work
Travelers can expect short delays and multiple work zones throughout the project during daylight hours Monday through Friday. Surfaces are pulverized gravel and milled pavement. No centerline striping through the project area. For questions about the project, call (406) 465-7198.
EXPECT: Travel Delay (mins), Pilot vehicles, Speed Limit (mph) - 35, Motorcycles consider alternate route, Signal lights
More Information
US-12 - Mile Marker 7 to 10
Road Work
GUARDRAIL INSTALLATION ON US-12 AT MM 7-10. Reduced speed limit 35mph. Travel Delays up to 15 mins. Traffic controlled with Signal Lights and Pilot Vehicles.
EXPECT: Pilot vehicles, Travel Delay (mins), Signal lights, Speed Limit (mph) - 35
US-12 - Mile Marker 77 to 83
Road Work
WATCH FOR WORKERS ON ROAD. Expect delays up to 15 minutes. Alternating Traffic controlled. From 6:30 AM till 6:00 PM. No overnight work at this time.
EXPECT: Travel Delay (mins), Pilot vehicles, Motorcycles consider alternate route, Signal lights, Speed Limit (mph) - 35, Lane closures
US-12 - Mile Marker 125 to 129.5
Road Work
Rumble strip work - Width and Speed restrictions - Expect delays and be prepared to stop - Watch for workers and equipment.
EXPECT: Flaggers, Signal lights, Lane closures, Pilot vehicles, Travel Delay (mins)
EXPECT: Width Limit 12 ft
US-87 - Mile Marker 93 to 108
Road Work
Advisory signs at Grass Range and Lewistown with message boards on both ends of the project. Rough road where pavement has been removed. Detour at MM 95. 25 mph speed one lane traffic with signal light control 6:30 am to 6:30 pm. Detour is 24 hours with 25 mph but two lanes overnight. Loads over 12 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: Motorcycles consider alternate route, Speed Limit (mph) - 25, Lane closures, Travel Delay (mins)
EXPECT: Width Limit 12 ft
More Information
US-87 - Mile Marker 94.2 to 94.5
Road Work
Realignment of curves and widening of shoulders. Expect areas of no pavement and heavy equipment on the road and crossing the road with haul trucks from 6:30 am until 7 pm. Traffic control will be in place. Loads over 12 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: Signal lights, Speed Limit (mph) - 35, Pilot vehicles, Travel Delay (mins), Flaggers, Lane closures
EXPECT: Width Limit 12 ft
More Information
US-87 - Mile Marker 95.6 to 97.1
Road Work
Realignment of curves and widening of shoulders. Expect areas of no pavement and heavy equipment on the road and crossing the road with haul trucks from 6:30 am until 7 pm. Traffic control will be in place. Loads over 12 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: Speed Limit (mph) - 35, Pilot vehicles, Flaggers, Lane closures, Travel Delay (mins), Signal lights
EXPECT: Width Limit 12 ft
More Information
US-93 - Mile Marker 25.9 to 38.7
Road Work
Mill and fill project near Darby, MT. Expect sidewalk closures and alternative pedestrian routes in the town of Darby during construction. Contractor work hours are between 6:00 AM and 7:00 PM.
EXPECT: Travel Delay (mins), Flaggers, Speed Limit (mph) - 25-35, Lane closures, Motorcycles consider alternate route, Signal lights, Pilot vehicles
EXPECT: Width Limit 16 ft
More Information
US-93 - Mile Marker 129.5 to 133
Road Work
Intermittent lane closures and reduced speed limit due to road work on US-93 from mile post 129.5 to 133, north of Whitefish. Logging operations in progress for utility relocation. Work hours are Monday through Friday 7:00 am to 5:00 pm.
US-93 - Mile Marker 161.3
Road Work
Guardrail Repair / All Day April 30th / 35 MPH / Flaggers / Alternating Single Lane Traffic
EXPECT: Speed Limit (mph) - 35, Flaggers, Lane closures
US-191 - Mile Marker 147 to 157
Road Work
TWO-WAY TRAFFIC WILL BE RESTORED OUTSIDE OF WORKING HOURS.
EXPECT: Flaggers, Lane closures, Travel Delay (mins), Signal lights, Pilot vehicles, Speed Limit (mph) - 35
More Information
US-212 - Mile Marker 60.9 to 62.2
Road Work
The north shoulder of US-212 will be closed in this area. Expect intermittent lane closures controlled by traffic lights and/or flaggers. A width restriction of 14 FT will be in effect during working hours. Working hours will be Monday through Friday 7:00 AM to 7:00PM.
EXPECT: Speed Limit (mph) - 35, Travel Delay (mins), Pilot vehicles, Lane closures, Flaggers, Signal lights
EXPECT: Width Limit 14 ft
US-212 - Mile Marker 94 to 95
Road Work
Bridge deck repair. Traffic control will be in place for the duration of the project. Travelers can expect reduced speeds and an alternating one-way traffic pattern controlled by temporary traffic signals.
EXPECT: Signal lights, Travel Delay (mins), Speed Limit (mph) - 35, Lane closures
EXPECT: Width Limit 13.5 ft
US-287 - Mile Marker 78.1 to 109.1
Road Work
Crack seal operations in progress MM78.1 to 85.9. Part of the project but not active yet MM89.3 to 95.6. Minor milling and paving starting April 22: MM102.6 to 109.2
EXPECT: Speed Limit (mph) - 35, Flaggers, Travel Delay (mins), Signal lights, Pilot vehicles
MT-2 - Mile Marker 68 to 78
Road Work
EXPECT: Speed Limit (mph) - 35, Lane closures, Travel Delay (mins), Signal lights, Pilot vehicles
MT-37 - Mile Marker 0.6 to 0.75
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 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: Lane closures, Signal lights, Travel Delay (mins)
EXPECT: Width Limit 10 ft
MT-37 - Mile Marker 23.33 to 23.34
Road Work
Bridge work starting 04/14/2025. 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays.
EXPECT: Signal lights, Travel Delay (mins), Lane closures
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: Travel Delay (mins), Lane closures, Signal lights
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), Signal lights, Lane closures
EXPECT: Width Limit 10 ft
MT-135 - Mile Marker 0 to 21.58
Road Work
Northbound lane closed; speed reduced to 35 MPH; traffic controlled with signal lights and pilot car for utility work along MT-135.
EXPECT: Speed Limit (mph) - 35, Travel Delay (mins), Pilot vehicles, Signal lights, Lane closures
MT-200 - Mile Marker 17
Road Work
Effective April 15, 2025: Loads over 10 feet wide are prohibited through the project area due to the narrow bridge.
EXPECT: Signal lights, Lane closures, Speed Limit (mph) - 35
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: Motorcycles consider alternate route, Signal lights, Speed Limit (mph) - 35-55, Pilot vehicles, Travel Delay (mins), Detour, Lane closures
EXPECT: Width Limit 12 ft
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 12 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: Speed Limit (mph) - 35, Lane closures, Travel Delay (mins), Motorcycles consider alternate route
EXPECT: Width Limit 12 ft
More Information
MT-200 - Mile Marker 246.8 to 253.5
Road Work
EXPECT: Pilot vehicles, Speed Limit (mph) - 35, Signal lights, Travel Delay (mins)
EXPECT: Width Limit 14 ft
MT-200 - Mile Marker 324.8 to 325.2
Road Work
Traffic shifted onto a gravel detour during working hours. As overhead demolition/construction is performed.
EXPECT: Detour, Speed Limit (mph) - 35
S-238 - Mile Marker 0 to 0.381
Road Work
Road work until 5:30 PM Sunday, June 1st, 2025. Sidewalk work is complete. Sign work and misc. shoulder work in progress between 7:00 AM and 5:30 PM Monday through Friday. Watch for workers and equipment. No restrictions in place.
S-248 - Mile Marker 17.1
Road Work
DETOUR ON GRAVEL SURFACE / 35 MPH
EXPECT: Detour, Speed Limit (mph) - 35
More Information
S-284 - Mile Marker 8.9 to 9.1
Road Work
US Department of Interior, Bureau of Reclamation is performing work on Canyon Ferry Dam, State Highway 284 from March 25 to May 30. The work will close one lane and motorists should expect traffic delays of up to 15 minutes.
EXPECT: Travel Delay (mins), Lane closures
More Information
S-412 - Mile Marker 0.5 to 2.5
Road Work
Traffic impacts include daily lane closures starting at 7 p.m. and ending at 7 a.m. The right turn lane on I-90 eastbound is closed 24 hours a day, 7 days a week. The adjacent ramp will be open at all times with reduced speeds and a 12-foot width restriction. The westbound and eastbound turn lanes on East Valley Center are currently closed 24 hours a day, 7 days a week.
EXPECT: Lane closures, Speed Limit (mph) - 25
EXPECT: Width Limit 12 ft
More Information
S-419 - Mile Marker 0 to 0.4
Road Work
Expect single lane traffic controlled by signal lights and reduced speed to 35 MPH.
EXPECT: Speed Limit (mph) - 35 MPH, Lane closures, Signal lights
S-489 - Mile Marker 0 to 8.6
Road Work
Work hours are from 7am to 6pm, Monday through Friday. Oversized load piloting is not available due to construction location during work hours. Width restrictions are only in effect during work hours, two-way traffic will be restored outside of working hours. Roadway will have loose material and uneven surfaces due to the milling that is taking place.
EXPECT: Speed Limit (mph) - 35, Flaggers, Motorcycles consider alternate route, Lane closures, Travel Delay (mins), Signal lights, Pilot vehicles
EXPECT: Width Limit 12 ft
S-522 - Mile Marker 0 to 1
Road Work
Bridge deck repair. Traffic control will be in place for the duration of the project. Travelers can expect reduced speeds and an alternating one-way traffic pattern controlled by temporary traffic signals.
EXPECT: Signal lights, Lane closures, Travel Delay (mins), Speed Limit (mph) - 35
EXPECT: Width Limit 15 ft
S-548 - Mile Marker 0 to 0.4
Road Work
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, Travel Delay (mins), Lane closures, Speed Limit (mph) - 35
EXPECT: Width Limit 12 ft
More Information

Completed Construction Projects

I-15 - Mile Marker 85 to 87.5 (Completed)
Road Work
NB RIGHT LANE IS CLOSED - 35 MPH SPEED LIMIT
EXPECT: Right lane CLOSED, Speed Limit (mph) - 35, Lane closures
I-15 - Mile Marker 154.5 to 155.5 (Completed)
Road Work
JERSEY RAIL REPAIR / PASSING LANE CLOSED
EXPECT: Speed Limit (mph) - 35, Left lane CLOSED
I-15 - Mile Marker 186.2 to 187 (Completed)
Road Work
SIGN WORK ON THE SHOULDER OF THE ROAD
EXPECT: Speed Limit (mph) - 45, Lane closures
I-90 - Mile Marker 79.5 to 80.5 (Completed)
Road Work
EB RIGHT LANE IS CLOSED - 35 MPH SPEED LIMIT
EXPECT: Lane closures, Right lane CLOSED, Speed Limit (mph) - 35
I-90 - Mile Marker 96 to 103 (Completed)
Road Work
Survey control work along I-90 right-of-way and within median for upcoming construction of the median cable rail project. All work will be performed outside of roadway along the right-of-way and in the median. Traffic signage will be used along the corridor, but no lane restrictions anticipated.
More Information
I-90 - Mile Marker 252 to 254.5 (Completed)
Road Work
WATCH FOR WORKERS REPAIRING POT HOLES
EXPECT: Right lane CLOSED, Speed Limit (mph) - 35
I-90 - Mile Marker 252 to 254 (Completed)
Road Work
WB RIGHT LANE IS CLOSED - 35 MPH SPEED LIMIT
EXPECT: Lane closures, Right lane CLOSED, Speed Limit (mph) - 35
I-90 - Mile Marker 254.5 to 256.5 (Completed)
Road Work
WB DRIVING LANE CLOSED WATCH FOR WORKERS
EXPECT: Right lane CLOSED, Speed Limit (mph) - 35
US-2 - Mile Marker 169 to 175 (Completed)
Road Work
CORE DRILLING OPERATIONS WATCH FOR ALTERNATING TRAFFIC WITH FLAGGERS
EXPECT: Speed Limit (mph) - 35, Lane closures, Flaggers
US-93 - Mile Marker 86.7 to 87.7 (Completed)
Road Work
SOUTHBOUND DRIVING LANE CLOSED, 35 MPH FOR GUARDRAIL REPAIRS
EXPECT: Speed Limit (mph) - 35, Right lane CLOSED
US-191 - Mile Marker 83 to 84 (Completed)
Road Work
Construction equipment entering and exiting US-191 near Sand Creek Trail. Use caution.
US-212 - Mile Marker 63.7 (Completed)
Road Work
Sign work in progress. Watch for workers and equipment
MT-41 - Mile Marker 21.7 to 23.3 (Completed)
Road Work
Sign work on the shoulder of MT-41 @ MM 21.7-23.3
EXPECT: Speed Limit (mph) - 35, Travel Delay (mins), Lane closures
MT-86 - Mile Marker 23 to 28 (Completed)
Road Work
WATCH FOR WORKERS
EXPECT: Speed Limit (mph) - 35
MT-287 - Mile Marker 15 (Completed)
Road Work
NW ENERGY IS CONNECTING NEW WIRES ACROSS MT-287 JUST WEST OF VIRGINIA CITY ON WED. APRIL 23RD. TRAFFIC CONTROL IN PLACE TO ALLOW ALTERNATING TRAFFIC TO GO THROUGH THE AREA.
EXPECT: Flaggers
S-205 - Mile Marker 11.4 to 18.9 (Completed)
Road Work
Sign installation on the shoulder of the road
EXPECT: Travel Delay (mins), Speed Limit (mph) - 35, Lane closures
S-210 - Mile Marker 3.1 to 7.5 (Completed)
Road Work
WESTBOUND LANE CLOSED; SPEED REDUCED TO 35 MPH, WATCH FOR FLAGGERS
EXPECT: Flaggers, Speed Limit (mph) - 35, Lane closures
S-308 - Mile Marker 0 to 5.8 (Completed)
Road Work
Sign work in progress. Watch for workers and equipment.
S-346 - Mile Marker 7 to 8 (Completed)
Road Work
WB LANE IS CLOSED - 35 MPH SPEED LIMIT
EXPECT: Speed Limit (mph) - 35, Lane closures
S-540 - Mile Marker 29.04 to 29.182 (Completed)
Road Work
Sign work on the shoulder of S-540 at MM 29.04-29.182
EXPECT: Lane closures, Travel Delay (mins)

Inactive Construction Projects


N/A