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Projects

Foothill Boulevard Bridge Widening over San Dimas Wash

Southstar provided construction management services for the Foothill Boulevard Bridge Widening Project over the San Dimas Wash. This project consisted of: widening the existing structure for both west and east bound traffic; added a 5-foot bike lane and an 8-foot shoulder to improve pedestrian

I-15 / Los Alamos Road Overcrossing Bridge Replacement

The Los Alamos Road Overcrossing Bridge Replacement project replaced the existing two lane bridge overcrossing Interstate 15 with a four-lane structure at a higher elevation profile over the freeway. The project was built in two stages with three standalone structures that connected with two deck closure pours. 

I-15 Clinton Keith Road Interchange

The County of Riverside proposed the reconstruction of the existing Clinton Keith Interchange on I-15.  The County acting as the lead agency for the project (even after the incorporation of the City of Wildomar in 2010), which obtained the PA/ED milestone in December 2009 after overcoming many environmental-related issues.

I-10 Cherry Avenue Interchange

This project widened the Cherry Avenue Overcrossing from 5 to 9 lanes over Interstate 10 (I-10) and reconfigured the I-10/Cherry Avenue interchange in the City of Fontana.

I-10 Riverside Avenue Interchange Caltrans EA 42230

This interchange reconstruction project widened the Riverside Avenue Overcrossing over Interstate 10 (I-10) in Rialto from 5 to 9 lanes, providing additional left-turn capacity for vehicles accessing I-10.  The project also widened all four ramps, constructed auxiliary lanes and installed ramp metering at the entrance ramps to manage the traffic flow onto I-10.

I-215 Widening - South

In December 2010, the Riverside County Transporation Commission (RCTC) awarded a $15 million construction contract for the widening of six miles of Interstate 215 between Murrieta Hot Springs Road and Scott Road.

I-15 Corridor Improvement Project Caltrans EA OJ080

The I-15 Corridor Improvement Project will add two Toll Express lanes and one general-purpose lane in each direction from SR-74 to SR-60 and one HOV Lane from I-215 to SR-74. The project, which is sponsored by RCTC, has an estimated cost of $1.7 billion.

I-10 Cedar Avenue Interchange Caltrans EA 1A830

This project widened the Cedar Avenue Overcrossing from 6 to 8 lanes over Interstate 10 (I-10) in an unincorporated area of San Bernardino County known locally as Bloomington.  The project also widened ramps from two to four lanes and construct auxiliary lanes at the entrance ramps to I-10 and widen Cedar Avenue from Slover Avenue to Valley Boulevard.

SR-91 Corridor Improvement Project Caltrans EA OF540

The State Route 91 Corridor Improvement Project (91 CIP) is a $1.3 billion design-build project sponsored by RCTC. As depicted in the graphic below, the project will add two toll express lanes, one general-purpose lane and auxiliary lanes in each direction, from SR-241 to Pierce Street, east of I-15.

I-15 Cal Oaks Interchange

Working with the City of Murrieta we have reconstructed the existing California Oaks Interchange on I-15.  The City acted as the lead agency for the project which obtained the PA/ED milestone in 2007.