Directional Freeway Closures for Girder Installation

WHAT: In preparation for bridge construction, crews are anticipated to install girders, which will require nighttime directional freeway closures. Girder installation involves the use of cranes to lift and place large beams into position. To safely accommodate this work, the following closures will be in place.

WHEN:

• 11 p.m. to 7 a.m., Friday, March 6 and Saturday, March 7 (into Sunday morning)
• 11 p.m. to 7 a.m., Friday, March 13 and Saturday, March 14 (into Sunday morning)

CLOSURES:

Friday, March 6 and Saturday, March 7 (into Sunday morning):

• Eastbound SR-91 from Lakeview Avenue to Imperial Highway
• Eastbound and Westbound 91 Express Lanes
• Northbound Lakeview Avenue
• Eastbound SR-91 Lakeview on-ramp

Friday, March 13 and Saturday March,14 (into Sunday morning):

• Westbound SR-91 from Lakeview Avenue to Tustin Avenue
• Eastbound and Westbound 91 Express Lanes
• Northbound Lakeview Avenue
• Eastbound SR-91 Lakeview on-ramp

These closures are necessary to safely accommodate crane operations and girder placement activities.

Potential impacts may include backup alarms from construction vehicles, bright lights, noise, and traffic delays. This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Changes to Westbound SR-91 On-Ramp at Lakeview Avenue

As of Monday, March 2, motorists traveling both NB and SB on Lakeview Avenue will use a new signalized intersection to access the newly realigned WB SR-91 straight on-ramp, and the WB SR-91 loop on-ramp at Lakeview Avenue will be permanently closed.

Additionally, the eastern side of Lakeview Avenue will be fully closed to pedestrians through August 2026. The western side will be accessible to pedestrians.

As of July 7, 2025, Eastbound SR-91 Loop On-Ramp is Closed for Approximately Two Years