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WATCH FOR CHANGING ROAD CONDITIONS
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Temporary lane and shoulder closures will be in place throughout the duration of the project. Watch for construction equipment on the shoulder of the interstate.
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Road closure for MT-21 to begin March 02, through mid June 2026. Replacing a timber bridge. Travelers must take US-287 or MT-200. \nPHASE 2/SECOND CLOSURE. CLOSURE BETWEEN RP 0.1 TO RP 0.2. ELK CREEK AND ELK CREEK OVERFLOW. BEGINNING MARCH 21, 2026.
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Road Re-construction taking place, single lane closure with flaggers controlling traffic.
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ALTERNATING SINGLE LANE TRAFFIC FOR BRIDGE REHABILITATION WORK.
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M.A DeAtley will continue to excavate embankment from within the Right-of-Way to build the subgrade for the new road alignment. Pulverization of the existing roadway will take place moving traffic onto a gravel surface. One Lane traffic with alternating signal lights will be in place over night from approx. MP35.5. Detour Bridge construction is also set to begin 4/20. Please watch for Speed Reductions, Lane Closures with pilot cars, and changing road conditions. Motorcycles, please consider alternate route with the changing road surface conditions. Work shift is tentatively 7:00 AM to 5:30 PM Monday-Friday.
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The Montana Department of Transportation (MDT) along with Riverside Contracting, Inc. anticipate beginning the week of March 23, 2026, along Montana Highway 83 (MT 83) near Swan Lake at Hall, Groom, and Six Mile Creek, weather and other factors permitting. Work includes replacing timber bridges with concrete box culverts, roadway reconstruction & improved safety features. Working hours are 7 a.m. to 5 p.m. Monday through Friday. Follow all posted signage and please watch for workers and equipment in the project areas. \n\n
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Bridge deck work at MP 303.6. Milling, paving, guardrail, and signing to begin April 19. Work shift 7pm to 7am. \n
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Bridge work on Exit 340 overpass structure. The bridge is closed to all traffic. Southbound US-89 traffic must enter I-90 westbound and turn around at Exit 337 to access eastbound I-90. Eastbound I-90 traffic must pass Exit 340 and turn around at Exit 343 to access northbound US-89. Mission Field is accessible from the eastbound I-90 on and off ramps.
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Bridge work on Exit 337 overpass structure. Single lane traffic and width restriction. Expect short delays.
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I-90 EB & WB REST AREAS/PARKING AREAS WILL BE CLOSED STARTING 03/30 FOR MAINTENANCE
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ALTERNATING SINGLE LANE TRAVEL
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Expect work zones with reduced speeds. Construction equipment will be working near the shoulders and south side of the existing roadway.
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The road will contain loose gravel. 14' Width Restriction.
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The project is scheduled to be completed by the end of August, weather and other factors permitting. Crews will be working from 6 a.m. to 6 p.m. The purpose of this construction project is to extend the service life of the roadway.\nFollow all posted signage and watch for workers and equipment.\n
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NB and SB single lane closures with reduced speed. A 12 foot width restriction and 95 foot length restriction is in place (excluding double and triple combinations). \n Loads that range from (95 feet to 150 feet) in length and/or (12 feet to 18 feet) wide will need to stage in the wide load staging area to be moved through during the wide load marshalling time period. Loads exceeding 18 feet wide and/or 150 feet long are considered super loads. Super loads should contact Mountain West Holding Company Monday through Friday 8 am - 5 pm at 406-490-8390 to coordinate super load marshalling through the project on a case by case basis.\nWide load staging is in place NB (RP 216.0) and SB (RP 222.5). Wide load marshalling will take place from 4 am to 6 am Monday through Friday. \n
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Intermittent single lane closures for signing installation.
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WATCH FOR WORKERS IN AREA\nNO TRAFFIC RESTRICTIONS AT THIS TIME\nBridge replacement across the Clark Fork River including grading and plant mix bituminous surfacing and crossovers on the Clark Fork/Old Hwy 10 Bridges project in Mineral County, west of Alberton. The project is located on westbound I-90 and includes the following\nlocations: From approximately RP 66.1 to 66.4, work involves removing and\nreplacing the existing westbound I-90 bridge over the Clark Fork River, and\n At approximately RP 65.5, work involves removing existing paint,\nremoving and repairing pack rust, and painting all steel elements in Spans 5 and 6 of the\nwestbound I-90 bridge over Old Hwy 10.\n
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Wyola Interchange will be closed beginning 4/13/26. Use alternate route.
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Workers conditioning seeding areas and installing signs along the route with reduced speeds where workers are present. Travelers can expect little to no delays, but slow down for workers and equipment along the highway. All driving surfaces are paved. Work will be performed during daylight hours Monday through Friday. For questions about the project, call (406) 384-9823
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WEST BOUND TRAFFIC MERGES TO EAST BOUND PASSING LANE WITH MEDIAN DETOURS
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WATCH FOR WORKERS PERFORMING BRIDGE MAINTENANCE /\nINTERMITTANT SINGLE LANE TRAFFIC ON THE BRIDGES BETWEEN MM 0-57 -- \n
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Traffic traveling on Paved detour \n\n
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East bound I-90, mp 0.0 to mp 5.0 will be closed. \nTraffic will be two-way, using median crossovers. The west crossover will be in Idaho at approximately mp 74.\nVarying speed limits, 35-55\nOn/off ramps accessing Lookout Pass will remain open.\n18 ft. width restrictions.\nStaging areas for oversize loads will be Westbound at the Deborgia, MT weigh station, and Eastbound at Mullan, Idaho.\nOversize load contact: Poteet Construction Inc., 406-360-3107\n
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Centennial Ave will be closed between S Excelsior Ave and Santa Claus Rd. Detour in place between Centennial Ave/Montana St. intersection, along Montana St to Platinum St. to the Platinum St / S Excelsior Ave intersection. Closure begins Monday, April 13 and is expected to continue through July.
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I-90 is limited to single lane traffic for use with median crossovers.\nBurlington St will be closed from Continental Drive to Saddle Rock Road. The detour will be in place from Continental / Burlington St intersection, along Continental Drive to Mt Highland Drive, to Saddle Rock Road, to Burlington St intersection.
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REALIGNING THE CURVE, WIDENING SHOULDERS, FLATTENING SLOPES
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Lane closures will be in place for construction of median crossover.
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Hours are Monday thru Sunday from 6 a.m. to 8 p.m., dependent on weather and other unforeseen circumstances. Outside of planned closures, drivers should expect single-lane traffic with reduced speeds and up to 15-minute delays.
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Lane closure with flaggers. Speed limit posted to 35MPH. 12FT Width restrictions.
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Bridge work 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays
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A 14 FT. width restriction will be in place on I-90 from MM 253 to 284. An alternate route will need to be used.\n\nLane closures and reduced speeds will be in place for bridge work from MM 263 to 265.\n
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Bridge work 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays
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Bridge work 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays
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Bridge work 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays
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Bridge work 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays
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Bridge work 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays
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Bridge work 10' Width restriction, reduced speed limit, traffic control, narrow lanes and travel delays
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I-90 Eastbound and Westbound will see single lane closures for bridge work
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CONTRACTOR OVERLAY ON PEERLESS LUSTRE RD MM 0-2
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EAST bound single lane closure due to city of Havre water main repair. Watch for equipment and workers.
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Bridge Replacement 2Km North of Jordan at Vail creek. This is a 35 mph gravel road.
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Bridge deck rehabilitation will occur on bridges located at RP99 & RP110 in both the northbound & southbound lanes on I15
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Temporary lane closures are in place for road construction. Flaggers and traffic lights are controlling traffic on both ends of the work zone.
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EB AND WB PASSING LANES ARE CLOSED - SPEED LIMIT VARIES FROM 35 MPH TO 55 MPH - A 14â WIDTH RESTRICTION WILL BE IN PLACE ON I-90 EB AND WB FROM MM 253 TO MM 284, AND ALTERNATE ROUTES WILL NEED TO BE USED.\nLANE CLOSURES AND REDUCED SPEEDS IN PLACE FOR CROSSOVER CONSTRUCTION.\n\n
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WATCH FOR WORKERS
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Installing traffic sensor in the EB Lane on 04/28 from 9:00 am - 4:00 pm
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Road work on I-90 EB and WB from mile post 122 to 124. Expect left lane closures and reduced speeds while work is in progress. Median cable rail installation operations will take place Thursday through Friday.
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Bridge repair work in progress. Single lane traffic being controlled by signal lights. Work starting 4/27, weather permitting. Traffic will only be impacted for a few days.
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Watch for Trucks and Workers entering/leaving the work zone. Lane Configurations are to be expected. Please watch for workers and equipment throughout the project area.\nThe Whitefish Stage and West Reserve Drive Intersection is being controlled by Temporary Traffic Signals. Traveling public will be on loose gravel traveling on loose gravel on Whitefish Stage during construction. 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. \nThe 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.\nDue to construction activities and lane configurations for construction a 12-foot width restriction will be in place for West Reserve.\n
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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.
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Sportsmans Bridge reduced to one lane Tuesday, April 28 through Wednesday, April 29, causing traffic delays. Concrete placement for the new Sportsmans Bridge foundation planned between hours of 9 a.m. to 4 p.m. Bridge Traffic will be reduced to a single lane controlled by temporary traffic signals and flaggers. \nFlathead River Bridge (Sportsman Bridge) Project Crews will be on site Monday through Friday, from 7 am to 5:30 pm. Preparation for the Bridge & Road Construction continue to progress. All work is dependent on the weather and other unforeseen factors. Please slow down and watch for workers and equipment entering and exiting the project area. \n\n** River Traffic: Once barges are in place and bridge construction begins, the east side of the river will remain open to boat traffic. Boaters are advised to use caution, particularly when work is in progress. \nPlease visit the project website, for more information.\n\n
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MT Hwy 91 is CLOSED to through traffic due to bridge out at the Big Hole River structure. There is no estimated time of reopening. Through traffic must use an alternate route.
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Gravel install and preparation for Paving operations
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Watch for Trucks and Workers entering/leaving the work zone. Lane Configurations are to be expected. Please watch for workers and equipment throughout the project area.\nIntersection is still controlled by Temporary Signals that allow traffic to travel in 1 direction at a time. \n
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Construction will resume in the area beginning Monday (4/13). Approximately 0.5 miles of roadway between RP 84 and 85 is gravel. Be advised, there may be loose gravel and soft spots. Reduce speed as appropriate for the conditions. Use caution.
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Culvert removal and replacement. Approximately 300-500 feet of gravel road until Paving Operations resume in Spring 2026.
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CAUTION: MUDDY ROAD CONDITIONS / 14' WIDTH RESTRICTION / 35 MPH