Niles Canyon Safety Improvement Project

2 Documents in Project


SCH Number
Lead Agency
Caltrans 4 (Oakland) (California Department of Transportation, District 4)
Document Title
Niles Canyon Safety Improvement Project
Document Type
JD - Joint Document

Document Description
NOTE: Reopened Extended Review NOTE: Joint document: EIR/EA. This project proposes roadway widening to provide standard shoulder width, and curve connection, on SR 84 between Alameda Creek Bridge and the SR 84/I-680 Separation (PM 18.0) in Sunol. The purpose of the project is to incrementally improve safety on Route 84 within the project limits. The project will widen the existing highway by up to 18' to accommodate a 2' soft median barrier, one standard 12' lane in each direction, and standard 8 ft shoulders. To make room for widening, the project will construct 5 retaining walls upslope from the highway where hillsides are cut away, a total of 5,300 linear ft of wall, and 9 retaining walls downslope from the highway toward Alameda Creek, a total of 3,400'.

Contact Information
Valerie Heusinkveld
California Department of Transportation, District 4
101 Grand Avenue, MS 8B
Oakland, CA 94612

(510) 286-5594


Cross Streets
State Route 84
Total Acres
State Highways
SR 84
Sunol ES
Alameda Creek
Other Location Info
City/Nearest Community: Sunol

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Other (Widening for shoulders, soft median)
Project Issues
Cumulative Effects Landuse Wetland/Riparian Water Quality Vegetation Toxic/Hazardous Soil Erosion/Compaction/Grading Flood Plain/Flooding Drainage/Absorption Biological Resources Archaeologic-Historic Aesthetic/Visual
Reviewing Agencies
California Public Utilities Commission Other - Public Comments Department of Fish and Wildlife, Region 3 Regional Water Quality Control Board, Region 2 Air Resources Board, Transportation Projects California Department of Parks and Recreation California Highway Patrol Native American Heritage Commission Resources Agency
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