August 4, 2026
The Montana Department of Transportation (MDT) and L&J Construction will begin milling and paving bridge ends on each of the four bridges of the Livingston Area Bridges project the week of August 3, weather and other factors permitting.
This includes Carter’s Bridge on East River Road, the Interstate 90 (I-90) Exit 337 overpass bridge, the I-90 Exit 340 overpass bridge, and the U.S. Highway 89 (US 89) bridge over the Yellowstone River, north of Exit 340.
Additionally, crews will be crack sealing the bridge decks simultaneously. Following the milling and paving work, a seal and cover (chip seal) will be applied to the newly paved areas.
This work is anticipated to take a few weeks to complete.
During construction, motorists should expect:
- Reduced speed limits
- Single-lane traffic over the bridges
- Temporary signals or flaggers directing traffic
- Temporary lane closures
- Possible delays on the bridges
- Width restrictions on the bridges
Visit 511mt.net for up-to-date information on width restrictions for individual structures.
July 17, 2026
The Montana Department of Transportation (MDT) and L&J Construction continue to rehabilitate four bridges in the Livingston area.
Carter's Bridge
Work on Carter's Bridge over the Yellowstone River on East River Road has paused. Crews will return in a few weeks for paving and curb work. Traffic control will not be in place during the pause.
U.S. Highway 89 (US 89) bridge
Work on the US 89 bridge over the Yellowstone River, north of Interstate 90 (I-90) Exit 340, continues this week. A 10-foot width restriction is in place on this bridge.
I-90 Exit 337 and 340 bridges
The I-90 Exit 337 bridge remains in a single-lane configuration. Work on the Exit 340 bridge is paused at this time. Remaining work on both bridges includes a crack seal and transverse deck grooving, which assists with drainage and surface traction. Additionally, work on the Exit 340 interchange ramps needs to be completed and will cause temporary ramp closures while taking place.
Paved bridge ends and curb work on all four bridges is expected to take place in the the next few weeks.
During construction, motorists should expect:
- Reduced speed limits
- Temporary signals or flaggers directing traffic at times
- Temporary lane closures
- Temporary ramp closures
- Detours
- Width restrictions on the bridges
Visit 511mt.net for up-to-date information on width restrictions for individual structures.
July 2, 2026
The Montana Department of Transportation (MDT) and L&J Construction will pause work and reopen the Interstate 90 (I-90) Exit 340 ramps and bridge by noon on Thursday, July 2, with no work taking place July 3 to 5, in observance of the Independence Day holiday.
Carter's Bridge and U.S. Highway 89 (US 89) bridge
Crews will begin work on Carter’s Bridge over the Yellowstone River on East River Road the week of July 6, weather and other factors permitting. A 9-foot width restriction will be in place on the bridge.
Work on the US 89 bridge over the Yellowstone River, north of I-90 Exit 340, is planned to begin the week of July 13. A 10-foot width restriction will be in place on the bridge.
Crews will address various deck surfacing issues to rehabilitate the bridges and extend their service life. This includes bridge deck crack sealing and installation of embankment protectors that help the structures resist erosion.
This work will take several weeks to complete, but is less substantial than the work taking place on the I-90 Exit 340 and Exit 337 bridges.
When work begins, motorists should expect single-lane traffic over the bridges controlled by flaggers or temporary signals.
I-90 Exit 340 and Exit 337 bridges
Guardrail work on the I-90 Exit 340 bridge ramps and Exit 337 bridge east of Livingston will resume the week of July 6.
During construction, motorists should expect:
- Reduced speed limits
- Temporary signals or flaggers directing traffic at times
- Temporary lane closures
- Temporary ramp closures
- Detours
- Width restrictions on the bridges
Visit 511mt.net for up-to-date information on width restrictions for individual structures.
June 26, 2026
The Montana Department of Transportation (MDT) and L&J Construction will close ramps on the U.S. Highway 89 (US 89) bridge at Interstate 90 (I-90) Exit 340, starting Tuesday, June 30.
During these closures, crews will be installing new guardrail at the interchange. This work is anticipated to take a few days to complete.
Only one interchange ramp will be closed at a time, and closures will be limited to daytime hours (6 a.m. to 8 p.m.). A detour using I-90 Exit 343 and Exit 337 will be in place during the closures.
A 10-foot width restriction will be in place for US 89 from 6 a.m. to 8 p.m.
Crews will pause work and reopen the Exit 340 ramps and bridge by noon on Thursday, July 2, with no work taking place July 3 to 5, in observance of the Independence Day holiday. Crews will resume work on Monday, July 6.
During construction, motorists should expect:
- Reduced speed limits
- Temporary signals or flaggers directing traffic at times
- Temporary lane closures
- Temporary ramp closures
- Detour route in place
- A 10-foot width restriction on the bridges (Visit 511mt.net for up-to-date information on width restrictions for individual structures)
June 15, 2026
The Montana Department of Transportation (MDT) and L&J Construction are continuing work to rehabilitate the U.S. Highway 89 (US 89) bridges at Interstate 90 (I-90) Exits 337 and 340 near Livingston.
The westbound side of the Exit 337 bridge is now complete. Single-lane traffic will begin traveling in the westbound lanes of the bridge. Crews will continue hydro milling the bridge deck (driving surface) and working on bridge joints.
During construction, motorists should expect:
- Reduced speed limits
- Temporary signals or flaggers directing traffic at times
- Temporary lane closures
- A 10-foot width restriction on the bridges (Visit 511mt.net for up-to-date information on width restrictions for individual structures)
- Detours at Exit 340 for US 89 traffic
A detour route for US 89 traffic at Exit 340 is in place. Both on- and off-ramps at the interchange remain open, but the bridge connecting the two sides will be closed during construction. Please follow the posted detour signage if necessary for your route. Do not use the authorized turnarounds near the interchange if you are not an authorized emergency vehicle.
May 8, 2026
The Montana Department of Transportation (MDT) and L&J Construction are continuing work to rehabilitate the U.S. Highway 89 (US 89) bridges at Interstate 90 (I-90) Exits 337 and 340 near Livingston.
On Tuesday, May 12, crews will be pouring new concrete bridge deck (driving surface) on the Exit 337 bridge sometime between the early morning and midday. During this work, motorists can expect longer than usual delays of 15 minutes or more. MDT recommends seeking an alternate route if these delays will have a major impact on your travel.
This work was originally planned for Thursday, May 7, but unforeseen circumstances delayed it.
Single-lane traffic will continue over the bridge with brief delays once standard work resumes the following day, Wednesday, May 13.
During construction, motorists should expect:
- Reduced speed limits
- Temporary signals or flaggers directing traffic at times
- Temporary lane closures
- A 10-foot width restriction on the bridges (Visit 511mt.net for up-to-date information on width restrictions for individual structures)
- Detours at Exit 340 for US 89 traffic
A detour route for US 89 traffic at Exit 340 is in place. Both on- and off-ramps at the interchange remain open, but the bridge connecting the two sides will be closed during construction. Please follow the posted detour signage if necessary for your route. Do not use the authorized turnarounds near the interchange if you are not an authorized emergency vehicle.
May 1, 2026
The Montana Department of Transportation (MDT) and L&J Construction are continuing work to rehabilitate the U.S. Highway 89 (US 89) bridges at Interstate 90 (I-90) Exits 337 and 340 near Livingston.
On Thursday, May 7, crews will be pouring new concrete bridge deck (driving surface) on the Exit 337 bridge sometime between the early morning and midday. During this work, motorists can expect longer than usual delays of 15 minutes or more. MDT recommends seeking an alternate route if these delays will have a major impact on your travel.
Single lane traffic will continue over the bridge with brief delays once standard work resumes the following day, Friday, May 8.
During construction, motorists should expect:
- Reduced speed limits
- Temporary signals or flaggers directing traffic at times
- Temporary lane closures
- A 10-foot width restriction on the bridges (Visit 511mt.net for up-to-date information on width restrictions for individual structures)
- Detours at Exit 340 for US 89 traffic
A detour route for US 89 traffic at Exit 340 is in place. Both on- and off-ramps at the interchange remain open, but the bridge connecting the two sides will be closed during construction. Please follow the posted detour signage if necessary for your route. Do not use the authorized turnarounds near the interchange if you are not an authorized emergency vehicle.
April 20, 2026
The Montana Department of Transportation (MDT) and L&J Construction are rehabilitating four bridges in the Livingston area.
Construction began the week of April 13 on the U.S. Highway 89 (US 89) bridges over Interstate 90 (I-90) at Exit 337 and Exit 340. Next week crews will begin hydromilling and cleaning both the bridge decks (driving surfaces), weather and other factors permitting. Construction on these two bridges is anticipated to take a few months to complete.
Following completion of work on these bridges, crews will begin construction on the US 89 bridge over the Yellowstone River north of Exit 340 and on the Carter's Bridge on East River Road. These two bridges are anticipated to take less time to rehabilitate.
During construction, motorists should expect:
- Reduced speed limits
- Temporary signals or flaggers directing traffic at times
- Temporary lane closures
- A 10-foot width restriction on the bridges (Visit 511mt.net for up-to-date information on width restrictions for individual structures)
- Detours at Exit 340 for US 89 traffic
A detour route for US 89 traffic at Exit 340 is in place. Both on- and off-ramps at the interchange remain open, but the bridge connecting the two sides will be closed during construction. Please follow the posted detour signage if necessary for your route. Do not use the authorized turnarounds near the interchange if you are not an authorized emergency vehicle.