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Segment 1: Lakeview to SR-55
Lakeview Avenue Bridge Construction
Pile Driving at Lakeview Avenue
This phase of pile driving for the new Lakeview Avenue bridge is complete. Thank you for your patience as crews created a strong foundation for the new bridge!
Currently, crews are installing steel, called rebar, in the retaining wall for the Lakeview Avenue bridge.
Crews driving their last pile during the first phase of pile driving on the SR-91 Improvement Project.
Crews installing rebar in the retaining wall.
This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
Did You Know?
The Lakeview Avenue bridge will remain open throughout daytime construction of the new bridge. Some overnight closures will occur. Work will be completed in stages:
Crews are currently building the first half of the new bridge alongside the existing one;
Once it's ready, traffic will be shifted onto the new half so the old bridge can be removed;
Lastly, the second half of the new bridge will be constructed and connected, creating a new structure for drivers.
Click on the image for a step-by-step view of Lakeview Avenue bridge reconstruction.
Crews are expected to continue daily work on the wall starting as early as 7 a.m. to 4 p.m. Work in this area is anticipated to include asphalt demolition and roadway grading on Tuesday, Oct. 14 and Wednesday, Oct. 15. The new sound wall along the westbound (WB) SR-91 on-ramp is anticipated to be complete by mid-2026.
Crews starting the installation of the structure backfill along the new sound wall further along the WB 91 on-ramp at Lakeview.
Crews finishing the installation of the structure backfill along the new sound wall further along the WB 91 on-ramp at Lakeview.
Crews placing the base for the future WB SR-91 on-ramp.
This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
Segment 2: SR-55 to SR-57
Construction on Segment 2 of the SR-91 Improvement Project is expected to begin in early 2026.
Segment 3: SR-57 Interchange
Construction on Segment 3 of the SR-91 Improvement Project is expected to begin in late 2025. Stay tuned for updates.
Closures and Detours
Freeway and Ramp Closures:
Nighttime lane closures on EB and WB SR-91 will occur regularly throughout construction. At least one lane will be open to traffic at all times, unless otherwise specified.
EB 91 Straight On-Ramp at Lakeview
Nightly, as early as 9 p.m. to 4 a.m., Monday, Oct. 13 and Tuesday, Oct. 14
EB 91 Loop On-Ramp at Lakeview (Two-Year Closure):
The two-year closure started on July 7, 2025.
91 Express Lanes:
The following nighttime closures of the 91 Express Lanes will occur between SR-55/Tustin Avenue and the Orange County/Riverside County line.
WB 91 Express Lanes:
As early as 9 p.m. Friday, Oct. 10 to 5 a.m. Saturday, Oct. 11
As early as 11 p.m. Friday, Oct. 17 to 7 a.m. Saturday, Oct. 18
EB 91 Express Lanes:
As early as 11 p.m. Friday, Oct. 17 to 7 a.m. Saturday, Oct. 18
For a full list of weekly closures and detours, and the most up-to-date project information, please click on the projectGoogle Mapbelow.
Bookmark the closures and detours map above for quick access to real-time construction information. Click on the construction icons to view activities and closure and detour information. Plan for additional travel time through the area. Detour signs will be in place to assist motorists.
About the Project
91 Connect Business Program
The "91 Connect: Shop Local, Support Local" program supports businesses along the SR-91 Improvement Project corridor by promoting visibility and minimizing construction impacts through proactive outreach. Business spotlights on the project website, social media, and construction alerts, are all aimed to encourage the community to shop local and raise awareness of local businesses during construction. Clickhereto learn more.
The SR-91 (SR-57 to SR-55) Improvement Project will improve 6.6 miles of State Route 91 (SR-91) through Anaheim, Fullerton, Orange, Placentia and Yorba Linda. The project will improve mobility throughout the corridor, reduce weaving and merging between ramps, and improve on- and off-ramps. The project will reconstruct the La Palma Avenue, Glassell Street, Tustin Avenue and Lakeview Avenue bridges and interchanges with standard lanes, shoulders and sidewalks in each direction. Visit our website for more information on segment and schedule details,octa.net/91improvements.
