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Upcoming SR-91 Closures

WHAT: Demolition of the Lakeview Avenue Bridge is expected to require nighttime full freeway closures for two consecutive weekends in October. Drivers should plan for detours and allow extra travel time.

WHEN: Two consecutive weekends in October. Exact dates and closure times will be provided in upcoming alerts.

WHY: These closures are necessary to safely complete the bridge demolition and protect motorists and construction crews.

CLOSURES:

• Westbound (WB)/Eastbound (EB) SR-91 freeway under the Lakeview Avenue bridge
• Lakeview Avenue between the SR-91 WB on- and off-ramps and EB on- and off-ramps

Crews completed a traffic switch to shift motorists onto the new half of the Lakeview Avenue bridge and new WB SR-91 off-ramp. Intermittent night work and Lakeview closures will continue as crews advance to the next phase of bridge construction. The demolition of the old bridge is expected to take place in October. Stay tuned for additional information regarding upcoming freeway closures.

Reminder: Pedestrian access on the bridge is currently closed. As early as the week of Sept. 21, the sidewalk on the east side of the bridge is expected to open. The sidewalk on the west side of the bridge is expected to remain closed, as crews continue work.

Daytime soundwall work is ongoing and is expected to be complete in late 2026.

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.

Photos of crews completing paving work for the new Lakeview Avenue bridge, removing old parts of the bridge, and pouring concrete to form the new sidewalk.

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 early 2027.

Crews will continue advancing roadway, drainage, bridge, and electrical improvements throughout the Segment 3 construction zone. Upcoming work includes traffic control implementation, roadway excavation, concrete and asphalt pavement removal, embankment construction, drainage installation, roadway base and fine grading, concrete paving, barrier footing construction, temporary paving, and temporary lighting and fiber installation. Work will continue during both daytime and nighttime hours.

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.

Crews performing concrete, excavation, and foundation work to prepare the project area for upcoming roadway and infrastructure improvements.

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

The SR-91 bridge over State College Boulevard is being widened to improve traffic flow and safety. Crews will continue advancing bridge work, including abutment footing and abutment construction, rebar installation, footing sandblasting, and backfilling around the completed footings as work progresses. Motorists should continue to expect intermittent nighttime closures of State College associated on- and off-ramps, and outside SR-91 freeway lanes as this work progresses.

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

Crews performing restriping operations to prepare the project area for upcoming roadway and infrastructure improvements.

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

REMINDER:

La Palma Avenue Lane Reduction

One lane on EB La Palma Avenue is closed between Blue Gum Street and Frontera Street and will remain closed until further notice. Motorists may experience increased traffic and delays in the area. Please plan ahead, allow extra travel time and consider alternate routes if available.

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.

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

Click here to view a full list of project closures.

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.