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Construction on Wikipedia
Construction on Web
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| Aug.8 |
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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 | |
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| Nov.16 |
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Caldecott Tunnel fourth bore opens Map of California State Route 24 Oakland 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.
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| Dec.1 |
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Breakthrough for Caldecott Tunnel's bore Map of Caldecott Tunnel Orinda 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 | |
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| Aug.9 |
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Drilling Begins On New Caldecott Bore Map of California State Route 24 Orinda 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 |
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Caldecott 4th Bore Construction Begin The Improvement Project will construct a fourth tunnel to connect Alameda and Contra Costa counties to help alleviate traffic congestion | |
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