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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.

Please be advised, the schedule is subject to change due to inclement weather or unforeseen operational issues.

The eastbound (EB) 91 Express Lanes between SR-55/Tustin Avenue and the Orange County/Riverside County line are anticipated to close as early as 11 p.m., Friday April 18 to 7 a.m., Saturday April 19. Drivers will be directed to use general purpose lanes and re-enter the 91 Express Lanes at county line.

Crews will perform work on the Lakeview Avenue bridge to demolish the center median. To facilitate this work, the following closures are anticipated to occur nightly as early as 10 p.m. to 5 a.m., Monday, April 21 to Thursday, April 24 (into Friday morning):

• Lakeview between Santa Ana Canyon Road and E. Riverdale Avenue
• Westbound (WB) SR-91 on- and off-ramps at Lakeview
• EB SR-91 on- and off-ramps at Lakeview

Crews are expected to perform a full directional freeway closure on WB SR-91 between Lakeview Avenue and SR-55/Tustin Avenue as early as 10 p.m., Saturday, April 26 to 6 a.m., Sunday, April 27. The closure will allow crews to demolish portions of the center median, perform striping work and remove overhead signage.

Nighttime lane closures on EB and WB SR-91 will take place regularly throughout the duration of the project, at least one lane will be open to traffic at all times, unless otherwise specified. Please visit the project Google Map for lane closure information.

Starting as early as Thursday, April 24, crews are expected to demolish the existing sound wall and rebuild a new sound wall along the WB SR-91 on-ramp at Lakeview Avenue to accommodate construction of a new on-ramp from Lakeview directly to southbound (SB) SR-55.

Sound wall work at this location will be ongoing for approximately 12 months.

Vegetation removal began the week of April 14 and will be ongoing for approximately three weeks at the SR-91/Lakeview Avenue interchange.

Work will take place during daytime hours behind k-rail and will not require any closures.

Please be advised, the schedule is subject to change due to inclement weather or unforeseen operational issues.

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.

Please be advised the construction schedule is subject to change.

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