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Drilling Begins On New Caldecott Bore Map of California State Route 24 Orinda
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Main Event: Caldecott Tunnel fourth bore op...
Contra Costa County, Road Construction on Google Map

B. 2014-08-08 Overnight closures of Caldecott eastbound bore Caldecott tunnel, Orinda
2013-11-16 Caldecott Tunnel fourth bore opens Oakland Hills
D. 2011-12-01 Breakthrough for Caldecott Tunnel's bore Caldecott Tunnel, Orinda
E. 2010-08-09 Drilling Begins On New Caldecott Bore Orinda
F. 2010-01-10 Caldecott 4th Bore Construction Begin 24

Breakthrough for Caldecott Tunnel's bore Map of Caldecott Tunnel Orinda
Overnight closures of Caldecott eastbound bore Map of Caldecott tunnel Orinda  Orinda: Motorists can expect delays during overnight closures of an bore of Highway 24 tunnel from Oakland to Orinda over the next two weekends Caldecott Tunnel fourth bore opens Map of California State Route 24 Oakland


year 2014 Top ^

Aug.8


year 2013 Top ^

Nov.16
  Oakland Hills: The long-awaited fourth bore of the tunnel opened to westbound traffic after emergency systems were tested and certified
 Signs reading 'Welcome to the 4th Bore' greeted predawn commuters beginning about 4 a.m.


year 2011 Top ^

Dec.1
  Orinda: Construction crews digging from the east and the west broke through about 650 feet from the Oakland side and 2,500 feet from the Orinda end



year 2010 Top ^

Aug.9
  Orinda: Crews began drilling into the mountainside near Orinda as work got underway excavating the fourth bore by the 130-ton, 50-foot-long machine
Jan.10 Caldecott 4th Bore Construction Begin
  24: The Improvement Project will construct a fourth tunnel to connect Alameda and Contra Costa counties to help alleviate traffic congestion


year 2007 Top ^

May.3   Caltrans Begins Contractor Selection
Map of Interstate 80 Oakland
  Oakland: Caltrans: The collapsed 580 freeway connector may reopen in just a few weeks





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