Caltrans District 7, I-5 South Corridor CM Services (Los Angeles and Ventura Counties)

Caltrans District 7, I-5 South Corridor CM Services (Los Angeles and Ventura Counties)


The I-5 South Corridor Improvement Project consists of six segments to create one continuous High Occupancy Vehicle (HOV), or carpool lane and one general purpose lane in each direction, and reconstructing, reconfiguring and realigning bridges, ramps and frontage roads. This seven-mile-long corridor (14 miles total) construction project to widen I-5 totals over $1.6 billion in improvements.  S2 Engineering provided construction management and quality assurance inspection services – including schedule review, claims analysis, office engineering, and specialty inspection – on a number of segments including the following;

I-5 HOV/Carmenita Road Interchange Project, Cities of Santa Fe Springs and Norwalk

The $380 million Carmenita Road project involved setting approximately 2,500 steel piles into the ground as part of the foundation structural support for the new Carmenita Road Bridge at the intersection of Firestone Boulevard and Carmenita Road. The existing two-lane steel structure was replaced with a 10-lane concrete structure.

I-5 HOV/Alondra Boulevard Bridge Project, City of Santa Fe Springs (Ongoing)

Alondra Boulevard Bridge was reconstructed as a wider and longer structure to accommodate a wider freeway. The new bridge was widened from four lanes to six lanes, with three lanes in each direction.

I-5 HOV/Rosecrans Widening Project, City of Norwalk

Like other segments of the project, the freeway was widened to five lanes in each direction. That means the surface street bridges were also widened to accommodate the freeway’s new width, new on- and off-ramps, etc. A sidewalk was built on Florence Avenue to accommodate pedestrians, including students walking to and from Santa Fe High School located on Orr and Day Road. Three bridges at Shoemaker, Rosecrans and Bloomfield avenues, and a pedestrian overcrossing at Silverbow Avenue will be reconstructed to accommodate a wider freeway. The project includes shoulder widening, concrete median barriers, new ramp designs and realignment to Firestone Boulevard frontage road.