SCH Number 2019129044
- State Route 57 Stormwater Mitigation Project
- Caltrans proposes to provide long-term measures to reduce pollutant contributions to the San Gabriel River-Coyote Creek Watershed by construction of a detention basin within the northbound State Route 57 Tonner Canyon Off-Ramp loop at Post Mile 22.0 in unincorporated Orange County, California. The proposed project will construct a detention basin as a form of a treatment Best Management Practice that will connect and discharge to the existing drainage system. In addition, the proposed project will add a maintenance vehicle access road within the off-ramp, a Midwest guardrail system along the right-side of the off-ramp loop, and relocate and add additional light posts for the off-ramp.
3 documents in project
|NOD||California Department of Transportation, District 12||State Route 57 (SR 57) Stormwater Mitigation Project|
|NOD||California Department of Transportation, District 12||State Route 57 Storm Water Mitigation Project|
|MND||California Department of Transportation, District 12||State Route 57 Stormwater Mitigation Project|