Prado Interchange

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Coming Summer 2030

The City will be constructing a new interchange crossing Highway 101 between the Madonna Road and Los Osos Valley Road exits that will reduce traffic congestion, allow for easier access to Highway 101 with new northbound on- and off-ramps, and support the creation of more housing here in San Luis Obispo.  

Project Benefits

When completed, the Prado Interchange will connect Dalidio Road and the new San Luis Ranch neighborhoods with Prado Road, creating an additional thoroughfare in San Luis Obispo that will: 

  • Provide a multi-modal link between Madonna Road and S. Higuera Street for drivers, pedestrians, cyclists and transit
  • Support future housing and commercial development in south San Luis Obispo
  • Reduce traffic congestion on Higuera Street, Madonna Road and Los Osos Valley Road
  • Create a new cross-town route connecting important regional destinations, including the 40 Prado Homeless Services Center, Laguna Lake, Madonna Road retail centers, and Margarita Area residential neighborhoods.

Project News and Updates

Staff will be presenting to City Council on February 4, 2025 to discuss approval of the final design phase of this project. 

Supporting Multi-modal Transportation
Expanding Housing Options for All & Creating Connections
Reducing Traffic Congestion
Regional Flooding Constraints


Project Partners

City of San Luis Obispo

  • Responsible for design, construction, primary financier
  • Coordinates between agencies

California Department of Transportation (Caltrans) District 5

  • Ensures compliance with Caltrans design and environmental standards
  • Accepts completed project from City
  • Working with Program/Asset Management Team

Project Budget 

The estimated cost for the project is $120 million and will be shared between these funding partners:

  • City of San Luis Obispo
  • San Luis Obispo Council of Governments
  • San Luis Obispo County
  • San Luis Ranch Development