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

Air Resources Board, Transportation Projects, California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, North Coast Region 1 (RWQCB), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Central Valley Flood Protection Board, Department of Toxic Substances Control, Department of Water Resources, Resources Agency

Transportation:Other (Highway Improvements)

Aesthetics, 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