101 Irwin Creek Culvert Rehabilitation Project

The proposed project is located in the City of San Rafael, Marin County, California, at post mile (PM) 11.3.  Rehabilitation would include repairs to portions of the Irwin Creek culvert (Bridge No. 27-0097) system that crosses under and is adjacent to US 101. This culvert system consists of eight culvert segments. The project proposes to repair five of the eight culverts, located between the southbound US 101 Central San Rafael off-ramp and the U.S. 101 Linden Lane underpass. Access to the culvert system and construction staging would be required on both sides of US 101 through the use of local streets, Caltrans right-of-way, and temporary easements.

Final Initial Study with Negative Declaration