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Crews are anticipated to continue construction activities that will require a full Lakeview Avenue street closure between Santa Ana Canyon Road and the westbound (WB) SR-91 off-ramp at Lakeview nightly, as early as Tuesday, May 26 through Thursday, May 28 (into Friday morning).

Intermittent nightly closures on Lakeview Avenue are expected to continue through mid-June.

For a full list of weekly closures and detours, and the most up-to-date project information, please click on the project Google Map below.

This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Motorists traveling both northbound (NB) and southbound (SB) on Lakeview Avenue will now use a new signalized intersection to access the newly realigned WB SR-91 straight on-ramp, and the WB SR-91 loop on-ramp at Lakeview Avenue has been permanently closed.

In this configuration, the eastern side of Lakeview Avenue is fully closed to pedestrians through August 2026. The western side is accessible to pedestrians.

Crews are hard at work. You may notice more traffic than usual. Please allow for extra time or utilize alternative routes. 

Crews completed a concrete pour to form the deck of the bridge on Thursday, May 21, marking a major milestone in construction progress. Intermittent night work will continue in the coming weeks as crews advance to the next phase of bridge construction.

Photos of this week's concrete deck pour on the new Lakeview Avenue bridge.

This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Sound and Retaining Wall Construction

Crews continue work on a sound wall along the WB SR-91 on-ramp and a retaining wall along the EB SR-91 on-ramp. Daily construction activities will start as early as 7 a.m. to 4 p.m. The new wall is anticipated to be complete by mid-2026.

Crews placing and grouting the blocks that form the top of the sound wall along the WB SR-91 on-ramp and placing structural backfill for the retaining wall along the EB SR-91 on-ramp.

This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Construction on Segment 2 of the SR-91 Improvement Project is expected to begin in late 2026.

Crews will continue striping activities and installation of temporary lighting and traffic control systems in the Segment 3 construction zone. Work will occur during both daytime and nighttime hours, with nighttime operations expected throughout much of the week. State College Boulevard will remain open to traffic; however, overnight lane reductions, ramp closures, and connector closures are required to safely complete this work.

More information will be provided in upcoming construction alerts.

Check the project Google Map for closure updates.

Crews continued overnight work in the Segment 3 construction zone, including traffic control installation and roadway preparation activities.

Learn more about planned improvements at octa.net/91Improvements.

Freeway and Ramp Closures:

Nighttime lane closures on EB and WB SR-91 and NB and SB SR-57 are anticipated to occur regularly throughout construction. At least one lane will be open to traffic at all times, unless otherwise specified.

WB SR-91 Loop On-Ramp at Lakeview:

• Permanently closed

EB SR-91 Loop On-Ramp at Lakeview (Two-Year Closure):

• The two-year closure started on July 7, 2025

WB SR-91 State College Blvd Off-Ramp:

• As early as 11:00 p.m., Tuesday, May 26 to 5:00 a.m., Wednesday, May 27

WB SR-91 State College Blvd Off-Ramp:

• As early as 10:00 p.m., Wednesday, May 27 to 5:00 a.m., Thursday, May 28

There will be intermittent closures throughout the week on the following connectors:

• WB SR-91 to SB SR-57 Connector

The schedule is subject to change due to inclement weather or unforeseen operational issues.

For a full list of weekly closures and detours, and the most up-to-date project information, please click on the project Google Map below.

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.

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, Kraemer Boulevard/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.

View common questions about the project.

If your community or organization is interested in receiving a project presentation or briefing, please email the Outreach Team at 91Project@octa.net.