405 Freeway Improvement
The Orange County Transportation Authority, in cooperation with Caltrans, is widening the San Diego Freeway (I-405) between SR-73 and I-605.The project is improving 16 miles of I-405 between the SR-73 freeway in Costa Mesa and I-605 near the Los Angeles County line. Construction updates are as follows: Update: Edinger Avenue Bridge Demolition
Crews will demolish the Edinger Avenue bridge over two nights to accommodate the freeway widening. This work will require full northbound (NB) and southbound (SB) freeway closures.
Northbound I-405 will be closed between Magnolia Street and Edinger, and southbound I-405 will be closed between Beach Boulevard and Edinger.
The closure is set for 11 p.m., Saturday, Nov. 7, to 9 a.m. Sunday, Nov. 8. Additional nighttime demolition will occur for several weeks under freeway lane closures. Some daytime demolition is also anticipated.
Dates and times are subject to change due to unforeseen operational factors or inclement weather.
Coming Soon: Harbor Boulevard Falsework Installation
Crews will continue constructing falsework for the widened I-405 bridge over Harbor Boulevard. This work will require full closures of NB and SB Harbor between the I-405 ramps.
Nightly closures are set to continue:
• 10 p.m.-5 a.m., Mondays through Thursdays
• 10 p.m.-7 a.m., Fridays Southbound I-405 Loop Off-Ramp to Beach Boulevard is PERMANENTLY CLOSED
The SB I-405 loop off-ramp to NB Beach Boulevard is permanently closed. Motorists will use the Beach Boulevard/Center Avenue offramp from now on to access NB and SB Beach.
The loop off-ramp was eliminated to accommodate the widening of Beach and of the freeway. The Beach/Center off-ramp and Center are being reconstructed to accommodate the change in traffic volume.
Email 405project@octa.net or call (888) 400-8994 for more information.
