Imperial Highway and Pioneer Boulevard

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A High Occupancy Vehicle (HOV) or carpool lane, and one mixed-flow lane in each direction is being constructed by Caltrans in late 2012 along the Santa Ana Freeway (I-5) at Imperial Highway for approximately two miles from Silverbow Avenue to Orr and Day Road in Norwalk. Four structures will be widened: the San Antonio Avenue undercrossing; Imperial Highway undercrossing; Pioneer Boulevard undercrossing; and the Orr and Day Road overhead/overcrossing. In addition, a southbound off-ramp will be constructed at the Pioneer Avenue undercrossing and the inside and outside shoulders will be upgraded to the standard width. The project investment is $302 million and is expected to be completed in early 2016.

Caltrans is committed to inform the public of the construction effort. Notices of community meetings and updated construction advisories will be posted on this website periodically. Thank you for your patience. For more information, please call toll-free (855) 454-6335.

Pioneer Boulevard Undercrossing Wall Aesthetic
San Antonio Avenue Undercrossing Wall Aesthetic
Project Overview Map
I-5 South Aesthetics Map
I-5 South Major Construction Activities map

Project Map

Closures

• 4-14-2013 Union Street Reconfiguration Temp (I-5 HOV Imperial Hwy and Pioneer Blvd)
• 4-01-13 to 4-04-13 Closure List (I-5 South Corridor Improvement Projects)
• 3-25-2013 to 9-2013 Construction Notice Pile Driving (I-5 HOV Imperial Hwy and Pioneer Blvd) SPANISH

News

• 5-22-13 Imperial Hwy Pioneer Project Groundbreaking

Meetings

• 4-25-13 Town Hall PowerPoint in Norwalk
• 4-25-13 Town Hall Meeting for I-5 South Corridor Flyer
• 12-4 -12 Notice for La Mirada-Norwalk School District Wellness Fair