OCTA and Caltrans will fully close the Fairview Road bridge overpass in Costa Mesa overnight on Friday March 15 and Saturday March 16 for demolition activities connected to the I-405 Improvement Project. The 405 Freeway will be fully closed overnight Saturday from 10 p.m. until 9 a.m. Sunday March 17.
The full freeway closure, along with overnight closures of the Fairview Road bridge and adjacent freeway ramps and connectors, are necessary to demolish part of the bridge over the freeway. The closures are scheduled from approximately 11 p.m. to 7 a.m. on March 15-16 and 10 p.m. to 9 a.m. March 16-17, weather permitting.
During the freeway closure, drivers will be detoured off the freeway at the Fairview Road off-ramps and back onto I-405 past the Fairview Road bridge.
Click here for local detours.
Click here for freeway detours.
Other overnight closures include:
- Northbound SR-73 to northbound I-405 connector
- Northbound I-405 off-ramps to Susan Street and Harbor Boulevard
- Northbound I-405 on-ramp from Fairview Road
- Southbound I-405 to southbound SR-73 connector
- Southbound I-405 and SR-73 on-ramps from Fairview Road
- Detours will be in place to guide drivers around the closures
Drivers should expect delays in the area and are encouraged to use alternate routes if possible. Up-to-date closure and construction information is available on the project’s interactive map at octa.net/405map.
The Fairview Road bridge is the fifth of more than 18 bridges to be built, widened or replaced as part of the project, which will speed up travel times on I-405 between Costa Mesa and the Los Angeles County line, an area traveled by more than 370,000 vehicles a day.
The bridge is expected to take approximately to two years to reconstruct. It will be demolished and reconstructed in two stages, allowing it to remain open to traffic during construction.
Once completed, the Fairview Road bridge will continue to have 10 traffic lanes, along with sidewalks and bike lanes in both directions. Traffic lanes and sidewalks will be widened, and a 4-foot-wide center median will be added to the bridge.