Crews are continuing to set up and pour concrete to form columns and retaining walls to support the new Lakeview Avenue bridge. Keep an eye out for even more progress as we continue to construct this major structure!
Crews lowering the column cage to form the columns of the new Lakeview Avenue bridge.
Crews pouring concrete to form the columns of the new Lakeview Avenue bridge.
Crews building the retaining wall for the new Lakeview Avenue bridge along the WB loop on-ramp at Lakeview.
This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
Crews are expected to continue daily work on the sound wall starting as early as 7 a.m. to 4 p.m. The new sound wall along the westbound (WB) SR-91 on-ramp is anticipated to be complete by mid-2026.
Crews forming the concrete barrier for the sound wall along the WB 91 on-ramp at Lakeview.
Crews pouring concrete for the barrier of the sound wall along the WB 91 on-ramp at Lakeview.
Crews completing a section of the concrete pour for the barrier of the sound wall along the WB 91 on-ramp at Lakeview.
Along EB 91 On-Ramp at Lakeview
Crews have been forming and pouring the footings of the retaining wall along the eastbound (EB) 91 on-ramp. Crews are also making progress preparing the area for the foundation of the new bridge.
Crews preparing to form and pour the footings of the retaining wall.
Crews preparing the retaining wall along the EB 91 on-ramp at Lakeview for a concrete pour.
The retaining wall along the EB 91 on-ramp at Lakeview after concrete forms have been removed.
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 mid-2026.
Segment 3: SR-57 Interchange
Construction on Segment 3 of the SR-91 Improvement Project is expected to begin in early 2026. Stay tuned for updates.
Closures and Detours
Street Closures:
Lakeview Avenue
Ongoing and intermittently into the end of the year, one lane of Lakeview Avenue between Santa Ana Canyon Road and the WB SR-91 off-ramp is anticipated to close on weekdays during daytime hours for bridge work.
NB Lakeview between Santa Ana Canyon Road & E. Riverdale Avenue
Nightly, as early as 9 p.m. to 5 a.m., on Wednesday, Dec.10 to Friday, Dec. 12 (into Saturday morning).
Santa Ana Canyon Road left turn lanes to NB Lakeview
Nightly, as early as 9 p.m. to 5 a.m., on Wednesday, Dec.10 to Friday, Dec. 12 (into Saturday morning).
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.
WB SR-91 Off-Ramp at Lakeview
Nightly, as early as 9 p.m. to 5 a.m., Friday, Dec. 5 and Saturday, Dec. 6
EB SR-91 On-Ramp at Lakeview
Nightly, as early as 9 p.m. to 5 a.m., on Wednesday, Dec.10 to Friday, Dec. 12 (into Saturday morning).
EB SR-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, Dec. 12 to 5 a.m., Saturday, Dec. 13
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. Click here to learn more.
Overview
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.
