U.S. 101 Tamalpais Drive Overcrossing
Project Description
Caltrans proposes to upgrade the structure over U.S. 101 at Tamalpais Drive OC by replacing the existing nonstandard pedestrian facilities with ADA compliant features. The Project also includes seismic structural improvements, intersection modifications, reconfiguration of the U.S. 101 on/off-ramps, and repairs and maintenance of the existing structure (Project).
The Project includes seven alternatives being considered for construction: the No-Build alternative and six build alternatives. All six build alternatives include removal of the existing, non-ADA compliant, spiral pathways and staircases on the south side of the structure, and construction of a new ADA pathway that provides east-west access for pedestrians across U.S. 101 at Tamalpais Drive OC. Each build alternative will also include intersection modifications, and reconfiguration of the U.S. 101 on/off-ramps at Tamalpais Drive.
Click on the maps of the Project alternatives below to see a larger version.
Alternative 2A Impact Map
Alternative 2B Impact Map
Alternative 3A Impact Map
Alternative 3B Impact Map
Alternative 4A Impact Map
Alternative 4B Impact Map