Project Description

  • Rail and Tie Threading Machine
  • Sonoma-Marin Area Rail Transit (SMART)
  • Sonoma-Marin Area Rail Transit (SMART)

Civil engineering design and hydrology services were provided for the SMART District on Phase 1 of construction of the new rail line. The SMART project will ultimately provide commuter rail service along 70 miles of the dormant Northwestern Pacific Railroad alignment and service 14 stations from Larkspur in Marin County to Cloverdale in Sonoma County. Phase 1 involved reconstructing 38 miles of track from San Rafael to Santa Rosa to accommodate commuter trains.

Green Valley designed 72 roadway/rail grade crossings for the project. Crossing design involved roadway modifications to accommodate track changes, installation of pedestrian safety features such as concrete sidewalks, pedestrian gates, chain link fence and warning devices, drainage improvements, striping and railroad signage, and electrical modifications for the installation of new street lights, detectable warning strips, and other warning signals. Other services included hydrology and hydraulic calculations, hydrologic analyses, review of existing stormwater data, design of storm drainage modifications, removals, and replacements.

Additional contributions to SMART included:

  • Topographic mapping for design of 14 transit stations
  • Preparation of utility base maps
  • Adhering to municipal and environmental permit compliance
  • Design of a SMART bike-walk path in downtown Santa Rosa