State Route 99 Manteca Widening Project EA 10-0E6100

8 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 6
Document Title
State Route 99 Manteca Widening Project EA 10-0E6100
Document Type
FON - FONSI - Findings of No Significant Impact
Present Land Use
Varies along corridor, including residential, commercial, industrial, agricultural, public, and airport land uses
Document Description
NOTE: Notice of Availability/FONSI Caltrans and the Federal Highway Administration, in cooperation with the City of Manteca, San Joaquin County, and the San Joaquin Council of Governments, propose to widen State Route 99 from the existing four-lane facility to 6 lanes within the median from the median from the Austin Road interchange in the City of Manteca (post mile 5.1) to the Arch Road interchange in the City of Stockton (post mile 15.0) with structural and operational improvements. The total length of the proposed project would be 9.9 miles. Three alternatives are being considered: two build alternatives and a no-build alternative.

Contact Information

Gail Miller
Agency Name
California Department of Transportation, District 6
Contact Types
Lead/Public Agency


San Joaquin
Cross Streets
Between Austin Rd interchange in Manteca and Arch Road interchange in Stockton
State Highways
Stockton Metropolitan
Golden West ES
Lone Tree Creek, French Camp SLough, Littlejohns Creek

Notice of Completion

Development Types
Transportation:Local Road (widening/interchange improvements)
Project Issues
Agriculture and Forestry Resources, Air Quality, Biological 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, Solid Waste, Transportation, Vegetation, Wetland/Riparian

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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