Full Nightly Closures Coming to I-405 North at Seal Beach Boulevard

The northbound I-405 freeway between Seal Beach Boulevard and the I-605 interchange will be closed nightly for several weeks beginning Saturday Dec. 10.

Nighttime closures will take place seven days a week; between 11 p.m and 5 a.m., Monday through Friday, and between 11 p.m. and 7 a.m., Saturday and Sunday. The work will last approximately three to four weeks.

These full northbound I-405 freeway closures are necessary as part of the northbound I-405 / westbound SR-22 / 7th Street connector reconstruction. Crews will perform the closure in order to erect false work over the freeway for the 7th Street bridge.

Detours:

  • From the northbound I-405, exit Seal Beach Boulevard, turn right and proceed north on Seal Beach Boulevard / Los Alamitos Boulevard. Turn left on Katella Avenue to access the northbound I-605 on-ramp.
  • From the northbound I-405, exit Seal Beach Boulevard, turn left and proceed south on Seal Beach Boulevard. Turn right on Westminster Avenue and then turn right on Studebaker Road to access the northbound I-405 on-ramp.
  • From the northbound I-405, exit Westminster Avenue, turn left on Westminster Avenue and proceed west. Turn right on Studebaker Road and proceed northbound to access the northbound I-405 on-ramp.
  • From the northbound I-405, exit Westminster Avenue, turn left on Westminster and proceed west. Turn right on Seal Beach Boulevard, continue north on Seal Beach Boulevard / Los Alamitos Boulevard then turn left on Katella Avenue to access the northbound I-605 on-ramp.

For a full breakdown of all work planned for next week, including recommended detours, please visit the Closure & Detour Notice for the Week of Dec.4, available here.