Lincoln Avenue Bridge Demo
Crews are demolishing the old Lincoln Avenue bridge. This work requires nighttime I-84 closures for several weeks. Demolishing this bridge will allow crews to continue widening I-84 under the South Jerome Interchange.
- Nighttime I-84 closures will occur from 7 p.m. to 6 a.m. for several weeks.
- I-84 closures are not scheduled to occur on Friday or Saturday nights.
- I-84 traffic will use the interchange ramps to exit and re-enter I-84 around the closed area.
- Flaggers may direct traffic on Lincoln Avenue.
- Daytime I-84 lane closures will occur.
- Work is weather-dependent and may be delayed due to conditions.
Major milestone!
ITD has moved traffic onto one of the new bridges on Lincoln Avenue and opened the new westbound off-ramp at the South Jerome Interchange.
- One lane is open in each direction on Lincoln Avenue.
- The old Lincoln Avenue bridge is closed to all traffic.
- Click here to see a map of the new traffic pattern.
- This traffic pattern will remain in effect until the new southbound Lincoln Avenue bridge is completed in 2026.
This bridge opened ahead of schedule and marks a major milestone in the construction of the new South Jerome Interchange. This traffic shift allows crews to demolish the old bridge sooner than originally expected, creating the space needed to widen I-84 to three lanes in each direction under the interchange. The second Lincoln Avenue bridge will open in 2026.
Temporary ramp
ITD has detoured a ramp at the South Jerome Interchange onto a local road. This new traffic pattern will allow crews to construct the new eastbound off-ramp.
Here’s what you need to know:
- Eastbound off-ramp traffic is detoured to Bob Barton Road.
- Traffic at this ramp is expected to remain in this configuration through summer 2026.
- Click here to view maps of the temporary ramp.
Current traffic impacts
ITD began work on the South Jerome Interchange in February 2024. Right now, motorists can expect:
- Traffic on Lincoln Avenue moved to the new bridge over I-84 in fall 2025. Traffic is restricted to one lane in each direction between the I-84 bridge and E Frontage Road S. This traffic pattern is expected to remain in place until 2026. Click here to view a map of the current traffic pattern.
- Traffic from the eastbound off-ramp is detoured to Bob Barton Road. This traffic pattern is expected to remain in place through summer 2026. Click here to view a map of the current traffic pattern.
- Intermittent I-84 lane closures will occur for the duration of the project. For the next few months, daytime lane closures may occur as crews work on the new Lincoln Avenue bridges.
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Summer 2025 update
Crews have been hard at work at the I-84 South Jerome Interchange. Check out the 2025 update video for the latest information about work on the:
- Interchange ramps
- New Lincoln Avenue bridges.
- I-84 Jerome to Twin Falls widening project
Flagging on local roads
Crews will intermittently flag on Bob Barton Road, E Frontage Road N and Lincoln Avenue near the South Jerome Interchange. Flagging will allow crews to work on the new interchange ramps and bridges.
Flagging is expected to occur from 7 a.m. to 5 p.m. and business access is expected to remain open.
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What to expect during construction:
- Most work will occur Monday – Saturday from 6 a.m. to 8 p.m.
- Intermittent nighttime closures on I-84 will be necessary for bridge work, girder placement and traffic shifts.
- Lane closures, traffic shifts and ramp changes will occur.
- Local road closures will occur and detours will be in place.
- Speed limits will be reduced.
Project overview
In 2024, crews began work to replace the South Jerome Interchange. The interchange was originally built in 1966 and it has reached the end of its design life. The new interchange will be a Divided Diamond/Couplet design. This design will:
- Replace aging structures to meet current standards.
- Improve safety by reducing the impact of the frontage roads on the on- and off-ramps.
- Increase traffic flow by installing new traffic signals.
Improvements include:
- Replacing the current interchange with a Divided Diamond/Couplet Interchange.
- Installing new traffic signals.
- Adding a sidewalk and bike lane to the Lincoln Avenue bridges.
- Improving Lincoln Avenue and frontage roads.
Sign up for construction updates:
- Click here
- Email: info@jerometotwin.org
- Call: (208) 391-3735
- Text: 84JTF to 1-866-483-8422
I-84 Jerome to Twin Falls
ITD is continuing work on I-84 between the South Jerome and Twin Falls interchanges. Click here to view the project website.
Process & Schedule
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Early 2024 – Fall 2024
Began improvements to Lincoln Avenue. Constructed the eastbound on-ramp, temporary eastbound off-ramp and improvements to Bob Barton Road. Began Lincoln Avenue bridge work. Started work on E Frontage Road N.
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Fall 2024 – Summer 2025
Built the new westbound on-ramp, a temporary westbound off-ramp and a temporary eastbound on-ramp. Continued improvements to E Frontage Road N, Lincoln Avenue and the eastbound off-ramp. Continued bridge work.
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Summer 2025 – Early 2026
Completed the new westbound off-ramp and the northbound Lincoln Avenue bridge. Continue work on the eastbound off-ramp and the southbound Lincoln Avenue bridge. Demolish the existing Lincoln Avenue bridge.
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2026
Complete the eastbound off-ramp, southbound Lincoln Avenue bridge and I-84 widening under the interchange.
Construction is expected to be complete in 2026.
Frequently Asked Questions
The I-84 South Jerome Interchange was originally built in 1966 and it has reached the end of its design life. The new design will prepare the interchange to serve south-central Idaho for years to come.
The new interchange was designed to meet traffic needs for the next 20+ years.
It will do this by:
- Reducing the impact of frontage roads on interchange ramps.
- Adding traffic signals that will maximize traffic flow and improve safety.
The Divided Diamond/Couplet design will improve safety, accommodate pedestrian and bicycle travel and increase traffic flow on I-84, Bob Barton Road and Frontage Road. This design was selected from over two dozen alternatives because it best meets each of these project goals..
Construction began in February 2024 and is expected to be completed in 2026.
Call: 208-391-3735
Email: info@jerometotwin.org