Traffic Control Update
During construction, motorists traveling through the project area can expect a 16-foot width restriction, reduced speeds, detours, alternating traffic, occasional single lane traffic, and possible delays. Construction updates are available.
All wide loads should coordinate alternate routes with Motor Carrier Services at 406-444-7262.
June 23, 2025
Bridge #5990 (Parr Creek): The on-site detour remains active. Crews started installing posts and railings and forming the bridge deck. Roadwork is ongoing and expected to last a couple more weeks, with paving tentatively planned for July. This work is subject to change due to weather and other unforeseen circumstances.
Bridge #5991: The on-site detour remains active. Crews have completed installing and backfilling the new culvert and are continuing to prepare the roadway surface for paving, which is tentatively planned for July. This work is subject to change due to weather and other unforeseen circumstances.
Bridge #5992: The on-site detour remains active. Crews are backfilling the newly installed culvert; this work is expected to continue for a few weeks. Roadway paving is anticipated to begin in July. This work is subject to change due to weather and other unforeseen circumstances.
Bridge #5993: The on-site detour remains active. Crews plan to shift traffic off the detour within the next week. The new culvert has been installed and is currently being backfilled. Roadway paving is anticipated to begin in July. This work is subject to change due to weather and other unforeseen circumstances.
Bridge #5994 (North Fork McDonald Creek): The on-site detour remains active. Crews are continuing bridge construction, including concrete pours. This work is expected to continue for several weeks. Excavation, roadway work, and installation of protective rock for the bridge will continue for the next week.
Bridge #5995: The on-site detour is now active. The existing bridge has been removed and the new culvert has been installed. Crews will continue detour work and backfilling the culvert over the next couple weeks.
Bridge #5996: Work to build the on-site detour is underway. Work to remove, relocate, and replace the existing culvert is progressing and will continue for the next couple of weeks.
Bridge #5997: Work to build the on-site detour is progressing. Crews are also continuing to remove, relocate, and replace the existing culvert. This work will continue for the next couple of weeks.
Bridge #6005 (Briggs Coulee): Roadway work is progressing and will continue for a couple weeks. Crews are continuing work on the bridge beams and forming the bridge deck.
Bridge #6101 (Elk Creek): The on-site detour remains active. Crews have completed rerouting the water channel and are continuing work to install the substructure of the bridge. Last week, crews began working on the embankments as well as rerouting the water channel.
June 12, 2025
Bridge #5990 (Parr Creek): The on-site detour remains active. Last week, crews installed large horizontal beams (girders) that will support the bridge decks. This week, they will begin installing the posts and steel railings, as well as forming the bridge deck. Meanwhile, roadway work is ongoing and will continue for the next couple of weeks. Roadway paving is anticipated to begin in July. This work is subject to change due to weather and other unforeseen circumstances.
Bridge #5991: The on-site detour remains active. Crews have installed and backfilled the new culvert, and roadway work to prepare the surface for paving is underway this week. Roadway paving is anticipated to begin in July. This work is subject to change due to weather and other unforeseen circumstances.
Bridge #5992: The on-site detour remains active. Work is in progress to install the new culvert and is expected to continue for a couple weeks. Roadway paving is anticipated to begin in July. This work is subject to change due to weather and other unforeseen circumstances.
Bridge #5993: The on-site detour remains active. The new culvert is installed and is currently being backfilled. Roadway paving is anticipated to begin in July. This work is subject to change due to weather and other unforeseen circumstances.
Bridge #5994 (North Fork McDonald Creek): The on-site detour remains active. Crews are continuing to build the bridge. The forms and rebar for the bridge abutments are in place and crews will begin the concrete work this week. Excavation and other work on the roadway will also be in progress through next week.
Bridge #5995: The on-site detour is now active. This week, crews are demolishing the existing bridge, with completion expected soon. Meanwhile, work to remove, relocate, and replace the existing culvert is also underway and will continue for the next couple of weeks.
Bridge #5996: Work to build the on-site detour is underway. This week, crews are demolishing the existing bridge, with completion expected soon. Meanwhile, work to remove, relocate, and replace the existing culvert is also underway and will continue for the next couple of weeks.
Bridge #5997: Work to build the on-site detour is underway. At the same time, crews are working to remove, relocate, and replace the existing culvert. This work will continue for the next couple of weeks.
Bridge #6005 (Briggs Coulee): Work is underway on the roadway. This week, crews will begin work on the bridge beams. The process is expected to continue for the next couple weeks.
Bridge #6101 (Elk Creek): The on-site detour is now active. Crews have demolished the existing bridge, and work on the embankments will begin this week, continuing for the next couple weeks. Meanwhile, work to reroute the water channel is underway and is expected to be completed by the end of the week.
May 28, 2025
Bridge #5990 (Parr Creek): The on-site detour is active. Work on the bridge abutments and structural concrete is complete. Crews are clearing the protective rock layer around the bridge supports this week. Next week, they plan to place the girders, which are horizontal beams that support the bridge decks.
Bridge #5991: The on-site detour is active. Demolition of the existing bridge is complete. Work to install and backfill the new culvert is underway and will continue for the next couple of weeks.
Bridge #5992: The on-site detour is active. Demolition of the existing bridge is complete. Work is underway to install the new culvert and is expected to continue for the next couple of weeks.
Bridge #5993: The on-site detour is active. Work to install the new culvert is underway and is expected to continue for the next several weeks.
Bridge #5994 (North Fork McDonald Creek): The on-site detour is active. Crews have finished installing the columns that will support the bridge. Work on the bridge abutments is underway and is expected to be completed next week. The bridge girders are planned to be installed in the coming weeks.
Bridge #5995: The on-site detour is built but not yet in use. Fence installation is complete. Work continues on the embankments and temporary culverts. Roadway milling is finished. Crews are demolishing the existing bridge and expect to be finished this week.
Bridge #5996: Fence installation is completed. Work is underway on embankments and temporary culverts. Roadway milling is complete.
Bridge #5997: Fence installation is completed. Work is underway on embankments and temporary culverts. Roadway milling is complete.
Bridge #6005 (Briggs Coulee): Roadway work is ongoing. Crews are pouring concrete for the bridge abutments this week and plan to finish next week.
Bridge #6101 (Elk Creek): Fence installation and roadway milling are complete. Crews are constructing the on-site detour this week, with plans to complete this work next week. Once the detour is active, demolition of the old bridge will begin in the following weeks.
April 17, 2025
Bridge #5990 (Parr Creek): The demolition of the current bridge is complete. The on-site detour is in use during construction. Work on the abutments is underway and will continue through next week.
Bridge #5991: The on-site detour is complete and is not yet active.
Bridge #5992: The on-site detour is in use during construction. The demolition of the existing bridge is underway.
Bridge #5993: Work on the detour is underway and is expected to be completed next week.
Bridge #5994 (North Fork McDonald Creek): The detour is active, and work is underway on the embankment and the demolition of the existing bridge. Temporary and permanent fencing has been installed.
Bridge #5995: Temporary and permanent fence installation is underway and will continue through the next week. Intermittent work on the embankments will be underway for the next couple of weeks.
Bridge #5996: Temporary and permanent fence installation is underway and will continue through the next week.
Bridge #5997: Temporary and permanent fence installation is underway and will continue through the next week.
Bridge #6005 (Briggs Coulee): The fencing is complete. Work is underway on the roadway and building the forms for the bridge and this will continue for the next few weeks. Work is also ongoing to widen sections of the embankment.
March 10, 2025
The contractors are currently mobilizing and staging equipment and materials in the project area in preparation for of construction.
February 12, 2025
The Montana Department of Transportation (MDT) and its partner M.A. DeAtley Construction, Inc. began work on the Briggs Coulee detour in Spring 2024.
Construction is expected to begin on bridges #5990, #6005, and #5994 in April 2025; however, this is dependent on weather and other unforeseen factors.
If you have questions or comments, please do not hesitate to contact the project communications team at mt200@dowl.com or calling the project hotline at 833-377-0453.