What's New?
- MEDALLION DESIGN COMPETITION!
- Student contest winners to design portal adornments, Bay Area News Group
- Tunnel Breakthrough Gives Momentum, Contra Costa Times
- Breakthrough Interview
- Tunnel Vision: Inside the Digging of the Caldecott's Fourth Tunnel, Diablo Magazine
- Tunnel Breakthrough, Nov 29th
- Milestone Reached in Construction of Caldecott Tunnel Fourth Bore, KTVU
- Underground in Action, Tunnel Talk
- Tunnel Breakthrough Fact Sheet (PDF, 1 MB)
- Video of Diablo Magazine’s Tunnel Tour
| Construction Video |
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West Portal Excavation – Summer 2011Early Excavation of the 4th Bore – September 27, 2010From the Road Header to the Dump Truck – September 17, 2010The Caldecott 4th Bore Construction Site – September 16, 2010What's Going on Behind the Construction Barriers? – September 8, 2010Caldecott Fourth Bore Project Groundbreaking Celebration – January 22, 2010 |