Imperial Highway & Pioneer Blvd. Project – May 17 – May 24, 2019

Construction on this project is 95% complete.
Projected date of completion: *Summer 2019. 

Also, please go to our Twitter page at for project updates.

I-5 Scheduled Overnight Lane & Full Freeway Closures – Norwalk Blvd. to I-605 (Week of May 19):

11 p.m. Sunday, May 19 to 5 a.m. Monday, May 20:
• Northbound and southbound I-5 all lanes and corresponding ramps closed from Norwalk Blvd. to I-605.
• To re-stripe lanes, drill foundation for freeway sign structure, and shift traffic to the new connector from northbound I-5 to I-605.  

Northbound traffic will exit at the Norwalk Blvd. off ramp and detour onto westbound Imperial Highway to northbound I-605 back to northbound I-5.

Southbound I-5 traffic will be detoured onto southbound I-605, exit on Imperial Highway eastbound to the southbound frontage road that rejoins I-5 at San Antonio Dr.

11 p.m. to 5 a.m. each night Monday, May 20 through the night of Thursday, May 23:
• Southbound I-5 two right lanes closed from I-605 to Norwalk Blvd.  
• To drill foundation for freeway sign structure and demolish a sound wall.  

Alternate route: Westbound State Route 91 (Artesia Freeway) to northbound I-605 to northbound I-5; or the reverse.

These closures are scheduled for separate nights and will re-open each morning by 5 a.m. Please go to our Planned Lane Closure web page for confirmation of closures each night at Also watch for updates at

Click below to view videos of I-5 Imperial Highway / Pioneer Blvd. Project:

View of decorative tile work on wall under San Antonio Bridge on May 14 (below):

View of decorative concrete work on wall under Imperial Highway Bridge on May 14 (below):

Workers are completing decorative concrete and tile work on walls under the I-5 bridges on Imperial Highway, Norwalk Blvd., and Pioneer Blvd. 

Photos below are from the San Antonio Bridge on May 14:

Photos below are from the Imperial Highway Bridge on May 14:

Construction of this interchange is nearing completion. The contractor is finalizing construction along Imperial Highway and Norwalk Blvd. at the I-5 interchanges. After tile and concrete work is done on the walls under the bridges, final pavement will be poured for the remaining lanes of the reconstructed interchanges at Imperial Highway and Norwalk Blvd. 

If crews work on Imperial Highway, Norwalk Boulevard and Pioneer Boulevard at I-5, one lane in each direction may be closed on each street with traffic control during the daytime, between 8:30 a.m. and 3:30 p.m.

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