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.
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.
Segment 1: Lakeview to SR-55
Click the image above to view the Lakeview Avenue rendering on the project website.
Lakeview Avenue Bridge
Pile Driving at Lakeview Avenue
Pile driving began on Thursday, Aug. 28 and will continue in phases through early October, on weekdays. Crews may be on the worksite as early as 6 a.m. and are anticipated to perform pile driving activities from 7 a.m. to 4 p.m.
On select weeknights between 10 p.m. and 5 a.m., crews will be digging out the footing at the new bridge location in preparation for driving piles.
While pile driving is a critical step in the construction process, it may also be noisy and cause some vibration.
This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
Sound Wall Activities
As part of ongoing construction of the new sound wall along westbound (WB) SR-91, crews continue to work at night to perform "strip and form" activities which involve placing and removing concrete forms from recently poured sound wall sections and setting up forms for the next pour.
Night work is expected to continue as early as 10 p.m. to 5 a.m. through Friday, Sept. 5 (into Saturday morning). Daytime work will continue on the through October.
Crews demolishing the old sound wall to accommodate the new SB SR-55 direct on-ramp that will be built.
Crews pouring concrete to construct the stems, the main structural support of the new sound wall.
Crews pouring concrete to form stem walls to support the new sound wall further along the WB 91 on-ramp at Lakeview.
This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
Upcoming Closures
Freeway and Ramp Closures:
Nighttime lane closures on eastbound (EB) and WB SR-91
Lane closures will occur regularly throughout construction. At least one lane will be open to traffic at all times, unless otherwise specified
WB 91 Loop On-Ramp at Lakeview
Nightly, as early as 10 p.m. to 5 a.m. on Monday, Sept. 8 through Thursday, Sept. 11 (into Friday morning)
WB 91 Straight On-Ramp at Lakeview
Nightly, as early as 10 p.m. to 5 a.m. on Monday, Sept. 8 through Thursday, Sept. 11 (into Friday morning)
EB 91 Straight On-Ramp at Lakeview
As early as 11 p.m. Friday, Sept. 5 to 7 a.m. Saturday, Sept. 6
Nightly, as early as 10 p.m. to 5 a.m. on Monday, Sept. 8 through Thursday, Sept. 11 (into Friday morning)
EB 91 Loop On-Ramp at Lakeview (Two-Year Closure)
The two-year closure started on July 7, 2025.
SR-91 Express Lanes Closures:
EB Express Lanes:
As early as 11 p.m. Friday, Sept. 5 to 7 a.m. Saturday, Sept. 6
About the Project
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.
