Highway 101 HOV Lane Widening and Improvements Project - Old Redwood Highway to Rohnert Park Expressway

Highway 101 HOV Lane Widening and Improvements Project - Old Redwood Highway to Rohnert Park Expressway

The project extends along Highway 101 in Sonoma County between Old Redwood Highway in Petaluma and the Rohnert Park Expressway in Rohnert Park, a distance of 10.3 km (6.4 mi). The following improvements are proposed within the project limits: widening in the median to provide high occupany vehicle (HOV) lanes in each direction; standard outside shoulders; auxiliary lanes to facilitate weaving traffic movements between the SR-116 and Rohnert Park Expressway interchanges; ramp geometry modifications at the Old Redwood Highway interchange; northbound climbing lane over the Cotati Grade to improve safety and operations and facilitate truck movements; replacement of the Railroad Avenue undercrossing, modifications at the Highway 101/SR-116 interchange; widening of several bridge structures to accommodate the HOV widening; lengthening the cattlepass undercrossing south of Railroad Avenue; modification of the existing truck brake inspection area at the top of the Cotati Grade; and on-ramp improvements to accommodate future ramp metering, provide California Highway Patrol enforcement areas, and provide for HOV preferential lanes where minimum requirements are met.

Cotati, Petaluma, Rohnert Park

Sonoma

Transportation:Other (Highway Improvements)

Agriculture and Forestry Resources, Air Quality, Cultural Resources, Cumulative Effects, Drainage/Absorption, Economics/Jobs, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Transportation, Vegetation, Wetland/Riparian, Wildlife