WMATA Washington Channel Tunnel
HEIGHT: 6.7 m
WIDTH: 11.3 m
TOTAL IMMERSED LENGTH: 311 m
FABRICATION METHOD: At shipyard at Port Deposit, Maryland, about 120 km from the site. Uncontrolled side launching was used.
WIDTH: 11.3 m
TOTAL IMMERSED LENGTH: 311 m
FABRICATION METHOD: At shipyard at Port Deposit, Maryland, about 120 km from the site. Uncontrolled side launching was used.
Washington D.C.,
United States
Washington Metropolitan Transit Authority (WMATA)
Joint venture of Perrini, Horn and Morrison-Knudsen
Parsons Brinckerhoff Quade & Douglas Inc
103.6m
311m
Project construction
1979-04-30
3
Two tubes; one track each
6.7m
11.3m
At shipyard at Port Deposit, Maryland, about 120 km from
the site. Uncontrolled side launching was used.
the site. Uncontrolled side launching was used.
At dockside at fabrication yard in Port Deposit.
Winches from pile-supported guide beams.
Continuous steel shell.
Screeded bedding.