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Sonoma-Marin Area Rail Transit (SMART) South Segment Sonoma and Marin Counties, CA

SMART is building a 70-mile passenger railroad and parallel bicycle-pedestrian path along the publicly owned Northwestern Pacific Railroad right-of-way through Sonoma and Marin Counties. The rail line runs from Cloverdale, at the north end of Sonoma County, to Larkspur, where the Golden Gate Ferry connects Marin County with San Francisco. Along the way, SMART will have stations at the major population and job centers of the North Bay: San Rafael, Novato, Petaluma, Cotati, Rohnert Park, Santa Rosa, Windsor and Healdsburg.

CHS is a subconsultant to PGH Wong Engineering, providing design services for the southern segment from the Larkspur Ferry Terminal to SR-37. CHS is responsible for traffic engineering design, including traffic signal preemption, traffic signal coordination and adaptive control, and railroad-highway grade crossing safety design. Work activities completed include evaluation and implementation of quiet zones and evaluation of 23 at-grade crossings along the SMART corridor from Sir Francis Drake Boulevard to the SR-37 interchange, as well as for 17 signalized intersections in downtown San Rafael. CHS is also responsible for evaluating the potential of closure for some private crossings. The project requires coordination with SMART, Marin County, and the Cities of San Rafael and Novato.

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