Construction on this phase of the auxiliary lane project began in spring 2007. The project will add four and one-half miles of auxiliary lanes between Millbrae Avenue in Millbrae and Third Avenue in San Mateo. It is the fourth phase of a larger project to extend the lanes from county line to county line, a total length of 26 miles.

Auxiliary lanes reduce freeway congestion by providing a merging area for cars to enter and exit the freeway. Local drivers can use the freeway for short trips to neighboring communities without having to merge into fast-moving traffic. The ramps are equipped with metering lights that are activated during commute hours, when traffic is heaviest.

As part of the project, the Peninsula Avenue overcrossing will be replaced with a wider bridge (from two to four lanes) and the entrances and exits to northbound U.S. Highway 101 will be reconfigured. The sidewalks will be widened, improving pedestrian access to the Coyote Point Recreational Area.

The Monte Diablo overcrossing will be rebuilt and a new pedestrian overcrossing will be built just south of the Broadway interchange.

The $150 million project is funded by the San Mateo County Transportation Authority, which is contributing $80 million, and Caltrans, which is contributing $70 million. Caltrans, the project lead, is responsible for overseeing construction. Visit the Caltrain website http://www.dot.ca.gov/dist4/101auxiliary/

05.11.2007 - crd rev. 06.19.2007 - crd