DC Engineering Group is currently working on the I-405 Sepulveda Pass Widening Design-Build Project that will add a 10-mile HOV lane and improve supporting infrastructure such as ramps, bridges, and sound walls. The segment of the I-405 between the I-10 and U.S.
101 freeways will be widened. As a sub-consultant, we are providing professional engineering services including traffic engineering support for impacts caused to all local city and county streets as a result of the widening of I-405. DC Engineering Group is also providing traffic studies due to stage construction work associated with Caltrans facilities and Local facilities. DC Engineering is supporting HNTB with Local Agency Coordination with Caltrans, LABOE, LADOT, LABSL, LADWP, LABSS, Los Angeles County, and other various agencies through the design review and approval process.