Interstate 5 Pavement Preservation Project

Location and Limits

This project is located on a 6.5-mile stretch of Interstate 5 (I-5), from the I-605 interchange to north of Atlantic Boulevard, in the cities of Commerce, Downey and Santa Fe Springs.

The Project

The purpose of this project is to extend the life of the pavement, impede roadway deterioration and improve the ride quality for motorists traveling on I-5. Work includes preventative maintenance and minor rehabilitation of 38 lane miles of the interstate. Broken concrete slabs will be replaced, and the roadway will be treated with an asphalt concrete overlay to help preserve its surface. In addition, the project will provide curb ramp and pedestrian signal upgrades, highway sign replacement, new striping, median barrier upgrades and bridge rehabilitation work on the overpass at Garfield Avenue.


Fall 2023 through early 2025

Total Project Costs

$33 million, including $3.9 million from the federal Infrastructure Investment and Jobs Act (IIJA) and $361,000 from Senate Bill 1 (SB 1), the Road Repair and Accountability Act of 2017.


Q: How will motorists be impacted by the work?

A: Motorists can expect nighttime lane closures within the project limits as well as occasional full freeway closures between the hours of midnight and 4 a.m. Full freeway closures will occur minimally during the timespan of the project.

In addition, the following ramps and connectors may close as soon as 8 p.m. each night (including weekends) and reopen before 6 a.m. on Monday – Friday or before noon on Saturday and Sunday:

  • Connectors from I-5 to I-605 and from I-605 to I-5
  • Southbound I-710 connector to southbound I-5
  • Florence Avenue on-ramp to northbound I-5
  • Southbound and northbound on- and off-ramps at the following locations:
    • Lakewood Boulevard
    • Paramount Boulevard
    • Slauson Avenue
    • Garfield Avenue
    • Washington Boulevard
    • Atlantic Boulevard
    • Triggs Street

There may also be occasional daytime ramp and connector closures between the hours of 9 a.m. and 3 p.m. on weekdays. No two consecutive ramps will close at the same time.

All work is subject to change due to weather and construction-related issues. Residents and businesses near the project may experience noise, vibrations and dust associated with construction activities.

Q: Will any city streets be closed?

A: During nighttime ramp closures, sections of the lanes on the adjacent city streets can close near the interstate. However, at least one lane will remain open to traffic throughout each closure.

Q: How do I receive the latest information about closures and detours?

A: Throughout the project, the contractor will place multiple message signs along the detour route to direct traffic and alert motorists of upcoming closures. In addition, detour routes and full closure notifications will be publicized on social media.

Twitter: CaltransDist7

Facebook: @CaltransD7

Instagram: @caltransdistrict7

If you are interested in receiving project updates and closure information via email, please reach out to the contact below.  

For real-time closure information, visit

Contact Information

Allison Colburn

Public Information Officer

Caltrans District 7