Elizabeth River Tunnel No 2
TOTAL IMMERSED LENGTH: 1010 m
DEPTH AT BOTTOM OF STRUCTURE: 30 m
HEIGHT: 11.0 m
WIDTH: 10.8 m
ENVIRONMENTAL CONDITIONS: Mild currents and tides
FABRICATION METHOD: Side-launched (uncontrolled) from shipyard in Port Deposit, Maryland, about 300 km away. Keel concrete placed for towing stability.
DEPTH AT BOTTOM OF STRUCTURE: 30 m
HEIGHT: 11.0 m
WIDTH: 10.8 m
ENVIRONMENTAL CONDITIONS: Mild currents and tides
FABRICATION METHOD: Side-launched (uncontrolled) from shipyard in Port Deposit, Maryland, about 300 km away. Keel concrete placed for towing stability.
Between Norfolk and Portsmouth, Virginia,
United States
Elizabeth River Tunnel Commission
Merritt-Chapman & Scott Corporation, Diamond Construction Company, Savannah
Parsons Brinckerhoff, Hall and McDonald
84.2m
1010m
30m
Project construction
1962-04-30
12
One tube; two lanes, one each way
11.0m
10.8m
Due to very poor soil conditions, Element No 1 was supported on timber compaction
piles.
piles.
Side-launched (uncontrolled) from shipyard in Port
Deposit, Maryland, about 300 km away. Keel concrete
placed for towing stability.
Deposit, Maryland, about 300 km away. Keel concrete
placed for towing stability.
At dock near tunnel site.
Mild currents and tides
Placement with floating cranes
Tremie concrete
Continuous steel shell plate
Screeded bedding.