Caldecott Activities Update – 511 Contra Costa

Caldecott Activities Update

The excavation of the first of seven cross passages between bores four and three has begun. The cross passages will serve as a safety feature for motorists when the new tunnel opens to traffic. To see more pictures of the West Portal Crosspassages go to www.caldecott-tunnel.org.
 

 
Source:
Caldecott-tunnel.org 

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