As of Monday, March 2 motorists traveling both northbound (NB) and southbound (SB) on Lakeview Avenue will use a new signalized intersection to access the newly realigned westbound (WB) SR-91 straight on-ramp, and the WB SR-91 loop on-ramp at Lakeview Avenue has been permanently closed.
Additionally, 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.
New Traffic Pattern:
NB motorists will turn left at the signal to access the on-ramp
SB motorists will turn right in either of the two turn lanes at the signal
Lakeview Avenue Bridge Construction
Falsework Construction for New Bridge
Crews have set up falsework, or temporary support structures, to prepare for the next phase of construction. Two consecutive weekends dedicated to girder, steel support beams, placement have been completed.
During the week of March 23, concrete pours will occur during nighttime hours.
Completed concrete pour for a portion of the new Lakeview Avenue bridge.
Crews placing temporary support structures for construction of the new Lakeview Avenue bridge.
Crews placing girders or steel support beams to form the new Lakeview Avenue bridge.
This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
Crews continue work on a sound wall along the WB SR-91 on-ramp and a retaining wall along the eastbound (EB) SR-91 on-ramp. Daily construction activities will start as early as 7 a.m. to 4 p.m. The new walls are 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.
Segment 2: SR-55 to SR-57
Construction on Segment 2 of the SR-91 Improvement Project is expected to begin in mid-2026.
Segment 3: SR-57 Interchange
Construction on Segment 3 of the SR-91 Improvement Project is underway bringing major upgrades to the SR-91/SR-57 interchange and surrounding areas to improve traffic flow, enhance safety, and support long-term mobility.
In the coming weeks, crews are anticipated to install signs within the corridor, perform striping activities, perform k-rail placement and clearing and grubbing activities. Check the projectGoogle Mapfor closure updates.
NB Lakeview Avenue between Santa Ana Canyon and WB SR-91 Off-Ramp:
As early as 10 p.m. to 5 a.m. nightly, from Monday, March 23 through Friday, March 27 (into Saturday morning)
Freeway and Ramp Closures:
Nighttime lane closures on EB and WB SR-91 are anticipated to occur regularly throughout construction. At least one lane will be open to traffic at all times, unless otherwise specified.
EB SR-91 On-Ramp at Lakeview:
As early as 10 p.m. to 5 a.m. nightly, from Monday, March 23 through Friday, March 27 (into Saturday morning)
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
91 Express Lanes Closures:
The following nighttime closures of the 91 Express Lanes will occur between SR-55/Tustin Avenue and the Orange County/Riverside County line.
WB 91 Express Lanes:
As early as 10 p.m., Friday, March 20 to 5 a.m., Friday, March 21
As early as 11 p.m., Saturday, March 21 to 7 a.m., Saturday, March 22
As early as 11 p.m., Saturday, March 28 to 7 a.m., Sunday, March 29
EB 91 Express Lanes:
As early as 11 p.m., Saturday, March 28 to 7 a.m., Sunday, March 29
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 projectGoogle Mapbelow.
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.
About the Project
91 Connect Business Program
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.
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, 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.
