About this project
Summary of work
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.
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 late-summer 2024. View the proposed design.
6th St. and Cedar River
Both I-90 bridges over 6th St. will be resurfaced along with the construction of two new I-90 bridges over the Cedar River. Construction on the I-90 eastbound bridge over 6th St. and the Cedar River is scheduled to start in late-May or early June in 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.