A cut-and-cover tunnel extends another 1,900 feet out of the Mount Baker Ridge Tunnel. In June 1989, the Mount Baker Ridge Tunnel opened, qualifying it as the largest diameter soft-soil tunnel in the ...
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Road realignment is major step for HS2, says firm
The construction of the longest "green" tunnel on the HS2 line has taken a "major step forward" with the realignment of a local road, its developer said. The 1.7-mile (2.7km) Greatworth Tunnel in ...
DUBLIN--(BUSINESS WIRE)--The "LRFD Road Tunnel Design and Construction Guide Specifications" report has been added to ResearchAndMarkets.com's offering. These specifications are intended for the ...
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