30 Jun Napa Valley Vine Trail Design (County of Napa)
The Napa County Transportation Authority is currently constructing the Vine Trail between Redwood Road in the City of Napa and California Drive in the Town of Yountville. The multi-use bicycle/pedestrian trail parallels State Route 29 and is situated in a closely-spaced corridor between the Napa Valley Wine Train tracks and Solano Avenue, the frontage road to SR 29. W-Trans provided the traffic engineering and operational analysis and designed pedestrian crossing enhancements for eight public street crossings. In addition to determining the appropriate locations for the crossings, additional signing, striping, and lighting measures were designed. Design plans were also prepared to modify four existing traffic signals and install two new traffic signals to enhance crossings at three high volume locations in Napa. Unique design issues included underground conflicts with a box culvert which required custom foundation designs for Type 1 poles, and working with Caltrans staff to determine the best configuration for new 2070 controllers when one controller is being used to control two intersections.