ALTO TUNNEL STUDY
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www.walkbikemarin.org]
NTPP Project #1001
Last updated: October 21, 2016
This Alto Tunnel Study is an effort to collect information on the feasibility of reconstructing the Alto Tunnel for potential future bicycle and pedestrian use. At this time, no decision has been made to reconstruct the tunnel. The County is gathering technical information and details requested by decisionmakers to help them make an informed decision about whether to initiate this project or not.
For prior information on the 2010 Mill Valley to Corte Madera Bicycle and Pedestrian Corridor Study that includes the Alto Tunnel and two other routes, visit the project webpage.
The Alto Tunnel corridor is in the incorporated areas of Mill Valley and Corte Madera. The County of Marin is the lead agency on this multi-jurisdictional corridor study and works closely with staff from Mill Valley, Corte Madera, Transportation Authority of Marin, and County Parks & Open Space.