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I-15/Cajalco Interchange Improvement Project

The City of Corona, in partnership with the California Department of Transportation (Caltrans), District 8, was reconstructing the interchange located on Interstate 15 (I-15) at Cajalco Road from Temescal Canyon Road to Bedford Canyon Road.

I-10/Jefferson Street Interchange

In spring of 2015, the Coachella Valley Corridor launched the construction phase of this $50 Million project. Scope of work consisted of the demolition of the existing Jefferson Street overcrossing and the northbound Indio Boulevard overcrossing.

Streeter Avenue Grade Separation

The Streeter Avenue Grade Separation project provided for the lowering of Streeter Avenue under the UPRR railroad tracks. The project site was along an arterial street within a residential area of the City. Two elementary schools and two churches were less than ½ mile from the site.

Magnolia Avenue Grade Separation

The 2-span steel girder railroad bridge provided for two tracks of the Union Pacific Railroad (UPRR) over a 4-lane major arterial street within a commercial area of the City.  The work required the construction of temporary soldier pile walls in order to keep traffic flowing along the Magnolia Avenue commercial corridor.  Permanent MSE walls were constructed for the underpass.

Columbia Avenue Grade Separation

This 4-lane roadway bridge was constructed over three tracks of the Burlington Northern Santa Fe Railroad (BNSF).  The 4-span cast-in-place concrete girder bridge was designed by DMJM Harris AECOM.

Pearblossom Highway Reconstruction Project

Southstar is currently providing Construction Management, Inspection, Materials Testing and Surveying services for the Pearblossom Highway Reconstruction project in Palmdale, California.

La Quinta Complete Streets Improvements Project

The City of La Quinta invested over $13.5 million from various funding sources to construct five new roundabouts in the La Quinta Village where pedestrian, bicycle, golf cart, and automobile traffic exists.

San Pablo Avenue Phase I Steetscape Project

The San Pablo Avenue Streetscape Project transformed San Pablo Avenue into a key artery in a revitalized city center where walking, biking, and fun is the focus in the City of Palm Desert.