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Tonight: 55-Hour Closure

Crews will perform construction activities on the westbound (WB) SR-91 off-ramp that will require continuous 55-hour closures starting as early as 9 p.m., Friday, July 10, through 4 a.m., Monday, July 13.

Closures:

• WB SR-91 Lakeview Avenue off-ramp
• Two outside lanes of WB SR-91

Detours:

• Exit WB SR-91 at Imperial Highway off-ramp
• Turn right onto Imperial Highway
• Turn left onto La Palma Avenue and continue to access Lakeview Avenue

• Exit WB SR-91 at Imperial Highway off-ramp
• Turn left onto Imperial Highway
• Turn right onto Santa Ana Canyon Road and continue to Lakeview Avenue

Crews are expected to continue construction activities that will require a full Lakeview Avenue street closure between Santa Ana Canyon Road and the WB SR-91 off-ramp at Lakeview nightly, as early as Monday, July 13 through Friday, July 17 (into Saturday morning).

Intermittent nightly closures on Lakeview Avenue are expected to continue through July.

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.

A new temporary configuration on Lakeview Avenue is expected to occur in August 2026. More information will be provided.

Crews will continue electrical work and concrete pours at the Lakeview Avenue bridge intersection. Intermittent night work will continue as crews advance to the next phase of bridge construction. The new half of the bridge is expected to open later this summer. Stay tuned for additional information about upcoming lane configuration changes and the demolition of the remaining portions of the old bridge, which is also expected to occur later this summer.

Crews will continue night work activities during the week of July 13 at Lakeview Avenue.

Photos of the concrete deck pour, placing gravel to support the foundation and pouring concrete

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 are working on forming the barrier alongside the eastbound (EB) SR-91 off-ramp at Lakeview Avenue. Daily construction activities will start as early as 7 a.m. to 4 p.m.

Crews placing and grouting the blocks that form the top of the sound wall along the WB SR-91 on-ramp at Lakeview, placing structural backfill for the retaining wall along the EB SR-91 on-ramp at Lakeview and pouring concrete for the barrier along the EB SR-91 off-ramp at Lakeview.

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 advancing roadway, drainage, bridge, and electrical improvements throughout the Segment 3 construction zone. Work will include excavation, shoring, temporary lighting installation, traffic control implementation, barrier work, and paving preparation, with activities occurring during both daytime and nighttime hours. State College Boulevard will remain open to traffic during most operations; however, intermittent overnight lane reductions, ramp closures, connector closures, and outside lane closures on SR-91 will be required to safely accommodate ongoing construction activities.

The SR-91 bridge over State College Boulevard is being widened to improve traffic flow and safety. Initial demolition of the existing bridge and re-striping work has been completed, and crews are now advancing foundation and bridge construction activities, including shoring and excavation. Motorists should continue to expect intermittent nighttime closures of State College Boulevard, on- and off-ramps, and outside SR-91 freeway lanes as work progresses.

For the latest construction information, traffic impacts, and closure updates, visit the project's Google Map and monitor future construction alerts.

Crews performed re-striping work on State College Boulevard to improve access to and from SR-91.

The images were taken during construction activities and do not reflect the completed traffic configuration.

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

Click here to view a full list of project closures.

Please note that construction schedules may be adjusted to accommodate traffic management needs associated with the FIFA World Cup, as well as inclement weather or unforeseen operational issues.

For a full list of weekly closures and detours, and the most up-to-date project information, visit our closure list 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.

Click here to see all the project resources, renderings, and factsheets.

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