Minnesota Department of Transportation

511 Travel Info

I-90 bridge reconstruction

Austin

About this project

I-90 bridge reconstruction project map
I-90 bridge reconstruction project map

Summary of work

There are six sites along I-90 in Austin that have bridges that are scheduled to be replaced or repaired 2024 to 2026. In a separate, earlier, project, a bridge at 11th Dr. NE was replaced in 2017 and a bridge at 28th St. NE was replaced in 2021.

Construction in 2024 started April 19 and it is anticipated to go through the fall.

Which bridges are part of this project?

There are six sites along I-90 in Austin involved in the project with each having different needs.

2024-2025
Oakland Ave. W / Hwy 105

A new bridge will be constructed at Oakland Ave. (Hwy 105) over I-90. Oakland Ave. will be closed during construction. The new bridge will include a wide walkway, which will connect to a future city/county trail. Construction started April 19, 2024 and will go through the fall. View the proposed design.

4th St. / Co. Rd. 45

A new interchange will be constructed to replace the current interchange. The new layout will provide for safer walkway crossings of I-90 and improved traffic flow. 4th St. will be closed for construction starting in the fall of 2024 and through the majority of the 2025 construction season. 14th St. will be used as the detour route. This construction is currently scheduled for 2024-2025. Construction is scheduled to begin May 31, 2024 and be finished fall of 2025. View the proposed design.

6th St. and Cedar River

Both I-90 bridges over 6th St. will be resurfaced and two new I-90 bridges over the Cedar River will be constructed. Work on the eastbound bridges will start late May/early June and be finished in fall of 2024. The I-90 westbound bridge work over 6th St. and the Cedar River will occur in the 2025 construction season. 6th St. under I-90 will remain open during this construction.

2026
14th St. / Hwy 218 North

The two bridges at this location will be replaced by one bridge and roundabouts will be constructed at each ramp intersection with 14th St. The southbound bridge will stay open to the extent possible during construction. Short duration detours will be provided at 4th St. This construction is currently scheduled for 2026. View the proposed design.

21st St. / Hwy 218 South

The 21st St. bridge and the south ramps will be reconstructed. The new bridge crossing will provide a wide walkway and connections to local trails. 21st St. will be closed during construction. 11th Dr. and 28th St. will be available for short detours. This construction is currently scheduled for 2026. View the proposed design.

Why are they being replaced?

I-90 is an important national east-west transportation route that connects many population centers in the U.S. in the Austin area. I-90 was built in the 1950s and the structures are at the end of their useful design life.

Traffic impacts

I-90 Oakland bridge detour map
I-90 Oakland Ave. bridge detour

Oakland Ave. bridge

Scheduled April 19 to fall 2024

The Oakland Ave. bridge over I-90 will be closed and detoured during construction. Ramps will be open for the majority of the time.

  • Motorists traveling west on Oakland Ave. should use the on-ramp to I-90 eastbound, then take Exit 177 to Hwy 218, take a left over the bridge and use the on-ramp to I-90 westbound. Next, motorists should use Exit 175 to go west on Oakland Ave./Co. Rd. 46.
  • Motorists traveling east on Oakland Ave. should use the on-ramp to I-90 westbound, then take Exit 166 to Co. Rd. 46, take a left and use the on-ramp to I-90 eastbound. Next, motorists should use Exit 175 to go east on Oakland Ave.

There will be occasional ramp closures at Oakland Ave. Once the schedule is determined, the dates will be put on the website and communicated through the project update emails.

  • I-90 eastbound motorists will be detoured to Exit 175 (Hwy 218).
  • I-90 westbound motorists will be detoured to Exit 166 (Co. Rd. 46).

During beam setting and deck pours, traffic for I-90 eastbound and westbound will be detoured up the exit and down the entrance ramps. As schedules are determined, the dates will be put on the website and communicated through the project update emails.

I-90 eastbound bridge resurfacing over 6th St.

Scheduled May 31 to fall 2024

  • I-90 eastbound lanes will be closed at the work zone. I-90 traffic will be in the westbound lanes with eastbound and westbound traffic using single lanes adjacent to each other. 
  • I-90 eastbound off-ramp to 6th St. will be closed and detoured:
    • I-90 eastbound motorists should use Exit 179 (11th Dr.), take a left and use the on-ramp to I-90 westbound. Next, motorists should take the 6th St. exit.
  • I-90 eastbound on-ramp from 6th St. will be closed and detoured:
    • Motorists should take the I-90 westbound on-ramp from 6th St., then take the Hwy 218 exit, take a left and use the I-90 eastbound exit.

I-90 and 4th St./Co. Rd. 45 interchange construction

Scheduled May 31, 2024 to fall 2025

  • I-90 eastbound off-ramp to 4th St. will be closed and detoured:
    • I-90 eastbound motorists should use Exit 179 (11th Dr.), take a left and use the on-ramp to I-90 westbound. Next, motorists should take the 4th St. exit.
  • I-90 eastbound on-ramp from 4th St. will be closed and detoured:
    • Motorists should take the I-90 westbound on-ramp from 4th St., then take the Hwy 218 exit, take a left and use the I-90 eastbound exit.

I-90 eastbound bridge construction over Cedar River

Scheduled early June to fall 2024

  • I-90 eastbound lanes will be closed at the work zone. I-90 traffic will be in the westbound lanes with eastbound and westbound traffic using single lanes adjacent to each other.