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The original item was published from 8/29/2022 7:08:00 AM to 9/3/2022 12:00:02 AM.

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Posted on: July 12, 2022

[ARCHIVED] Caltrans-Tamalpais Overcrossing Project- Scheduled for 2025

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Caltrans recently published their Draft Initial Study with Proposed Negative Declaration (IS/ND) for the U.S. Highway 101 Tamalpais Drive Overcrossing project in Corte Madera, which considers six project alternatives (see a 360 Tour of the Alternatives here).

The sponsor and lead for the project is Caltrans and their official webpage is available as follows:  Marin County U.S. 101 Tamalpais Overcrossing Project website.

The purpose of the project is to upgrade the existing pedestrian facilities to provide Americans with Disabilities Act (ADA) compliant access across U.S. Highway 101 at Tamalpais Drive Overcrossing, seismic improvements and repairs, and maintenance of the existing structure. 

This Project is needed because the existing pedestrian infrastructure within the Project area is not compliant with current State and Federal ADA regulations. The Project is also needed because the structure is at risk of seismic failure because it cannot be fully inspected. Repairs and rehabilitation of the overcrossing (OC) are being completed to satisfy maintenance plans for the state highway system within the Project area.

Construction is anticipated to begin in 2025, and the duration is currently estimated to take 360 to 480 working days. It is proposed that work will be completed using a combination of day shifts and night shifts, depending on specific operations.

To further discuss the project and environmental process, Caltrans and their project team will be hosting a virtual public workshop on Thursday, August 4th at 6PM via Zoom. 

To access the meeting via Zoom, enter the link below into your web browser:
To join the Community Workshop, please enter in the following meeting ID: 885 8217 1290. No registration is required. 

You can view and share complete details on this virtual workshop by clicking here for the workshop flyer.

Caltrans will also be providing a presentation at the August 16th Town Council regular meeting. 

Comments will be accepted by Caltrans during the 45-day public comment period from July 7, 2022 to August 22, 2022.

We encourage you to participate in the process and to provide any formal comments directly to, or mail to:

To view a copy of the information mailer Noticed by CalTrans, please click here.

The Town's Bicycle Pedestrian Advisory Committee (BPAC) anticipates holding a special meeting during the week of August 8th, 2022 to hear a presentation from Caltrans on the Tamalpais Drive Overcrossing Project.  Once the details of this meeting are finalized and scheduled, the Town will communicate more details to the community as they become available.  

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