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Caltrans District 4
California Department
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Marin-Sonoma Narrows Home

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Project Map

The MSN project consists of three segments:

  • Segment A (Southern Segment) Route 37 to Atherton Avenue
  • Segment B (Central Segment) Atherton Avenue to north of Route 116 (East)
  • Segment C (Northern Segment) - Route 116 (East) to Old Redwood Highway.

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