Construction on this project is 78% complete.

*** Update ***  On the northbound I-5, the scheduled overnight closures of the right lane from Norwalk Boulevard to Pioneer Boulevard through March 8 are CANCELLED. The contractor is able to complete the work without lane closures.


Crews construct “approach slab”, which will provide additional support for vehicles where the future northbound lanes of I-5 meet the Pioneer Boulevard Bridge. Before (last week) and after (this week) pictured below:



Grading and compacting of future lanes of northbound I-5 between the Imperial Highway Bridge and the Pioneer Boulevard Bridge is complete (below). Over the next few weeks, trucks will deliver tens of thousands of tons of base, or gravel, that will provide the base for two separate layers of concrete when paving the new freeway lanes. Laying of base will last for several weeks.



Grading and compacting of mainlines and of approach slab continues between the San Antonio Bridge and the Imperial Highway Bridge (below):



Crew installs rebar on barrier rails and sound wall along Pioneer Blvd. Bridge (below):



Workers on the deck of the top side of the Imperial Highway Bridge, where northbound lanes of I-5 will cross over Imperial Highway (below):



New sidewalk, curb and gutter on the north side of Imperial Highway approaching the new northbound on ramp (below):



New sign for northbound I-5 for the Imperial / Pioneer project (below):


  • Work along Pioneer Boulevard continues on the curbs and the median.
  • Installation of lighting under the Pioneer Bridge is complete.
  • Crews continue to construct banner rail and sound wall along the mainlines.
  • Crews will pour concrete for the bridge abutment at Norwalk Blvd. next week.

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


Contractors commenced construction of a retaining wall and sound wall along I-5 between the interstate and Mondon Avenue in the City of Norwalk on Feb. 14 (below). Construction will take place between Tina St. and Gem St. It will occur primarily Monday through Friday during the hours of 7 a.m. and 3 p.m. and is expected to continue through mid-May. We will update this web page if any nighttime work is required.

There are no planned lane closures on Mondon Avenue, but at times construction equipment will need to block the roadway. If so, traffic will be temporarily controlled with flagging. There will be construction noise from equipment.

Flyers were distributed to all homes along the designated construction portion of Mondon Avenue and the corresponding cul de sacs (below):







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