Marin Unveils Tam Junction Improvements Plan to Boost Safety, Transit

Marin County planners have started a new placemaking effort for Tamalpais Junction and the Manzanita area in Tam Valley. Their goal? To shape a safer, more connected corridor that fits local lifestyles from Mill Valley to Sausalito.

The first public meeting at the Tam Valley Community Center kicked off a broad effort to co-create a vibrant environment. Planners want to honor Marin’s semi-rural roots while dealing with modern headaches like traffic, climate resilience along Richardson Bay, and all the usual multi-agency wrangling.

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Tam Junction and Manzanita: A New Placemaking Effort in Marin County

This project is the first real look at the corridor in 34 years. Planners know that past efforts to protect the area’s semi-rural character have left some stretches with little more than basic roads and barely-there sidewalks.

Folks in Tam Valley, Mill Valley, Corte Madera, and San Anselmo feel the tension between keeping that character and making things safer. Rising sea levels and rougher winter storms along Richardson Bay make the balance even trickier.

What Planners Are Aiming to Achieve

County leaders call this a comprehensive placemaking process. They want to create a well-used, connected corridor—one that ties together transportation, flood management, and community spaces.

The plan will focus on public space, transit access, and climate resilience. Marin expects to hire a multidisciplinary planning consultant by the end of the year.

Once the consultant’s on board, the design and prioritization process will start. It’ll need to reflect Marin’s messy, overlapping jurisdictions, from Larkspur and Sausalito to San Rafael and beyond.

  • Develop a clear scope of work for the Tam Junction/Manzanita study that matches Marin’s climate and mobility needs.
  • Hire a multidisciplinary planning consultant by late this year to guide the design and implementation.
  • Start a design and prioritization process that weighs pedestrian, bicycle, transit, and emergency evacuation needs.
  • Plan for sea-level rise and winter storm flooding along Richardson Bay and the nearby shoreline.
  • Coordinate with agencies—especially Caltrans, given Highway 1’s importance—to keep standards consistent from Sausalito to Fairfax.

What Residents Want to See and How They’ll Be Heard

At the Tam Valley meeting, residents spoke up for pedestrian and cyclist safety. They pushed for continuous sidewalks and protected bike lanes along busy parts of Tam Junction.

People also asked for ADA-compliant bridge replacements where needed. Parking on the west side came up too—many want to rethink it to cut down on gridlock for shoppers and commuters from San Anselmo to Tiburon.

Inclusivity kept coming up. Folks want lots of ways to take part, not just one or two.

  • Pedestrian and cyclist safety improvements, including continuous sidewalks and protected bike lanes.
  • ADA-compliant bridge replacement where current facilities fall short on accessibility.
  • Reassess west-side parking to cut congestion and boost curb appeal for towns like Sausalito and Mill Valley.
  • Broad outreach tools—think online surveys, recorded meetings, and written comments—to reach the 11,000 or so residents in Tam Valley and the wider Marin area.
  • Examples of successful placemaking studies to help shape Marin’s own approach and keep things relevant to the area’s unique vibe.

The Process and Timeline

Planning officials want a process that’s open and brings together local know-how with technical chops. Marin expects to pick a consultant team by late this year.

After that, they’ll move into a phased design and prioritization exercise. The process will look at traffic flow, transit choices, flood control, and coordination between Marin agencies, Caltrans, and neighboring towns—from San Rafael and San Anselmo to Fairfax and Ross.

Outreach, Inclusion, and Local Voices

Tamalpais Design Review Board members stressed that circulation and basic safety have to come first. At the same time, they pushed for broader engagement—making sure everyone gets a say.

Boards and planners want to hear from public transit users, caregivers, and people with disabilities at every step. They see this kind of planning as crucial for Marin’s communities, from Corte Madera’s shoreline to Sausalito’s waterfront and everywhere in between.

As Marin’s towns—Mill Valley, Tiburon, Sausalito, San Rafael, San Anselmo, and Corte Madera—keep an eye on this corridor’s changes, the Tam Junction/Manzanita effort might set an example for people-first improvements along Highway 1. Over the coming months, Marin County residents will see more chances to get involved, with online surveys, open houses, and neighborhood meetings popping up throughout Tam Valley and nearby communities, both along the waterfront and further inland.

 
Here is the source article for this story: Marin planners embark on Tam Junction improvements

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Joe Hughes
Joe Harris is the founder of MarinCountyVisitor.com, a comprehensive online resource inspired by his passion for Marin County's natural beauty, diverse communities, and rich cultural offerings. Combining his love for exploration with his intimate local knowledge, Joe curates an authentic guide to the area featuring guides on Marin County Cities, Things to Do, and Places to Stay. Follow Joe on Facebook, Twitter, and Instagram.
 

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