Hampton Roads Bridge Tunnel No 1
TOTAL IMMERSED LENGTH: 2091 m
DEPTH AT BOTTOM OF STRUCTURE: 37 m
HEIGHT: 11.25 m
WIDTH: 11.25m
FABRICATION METHOD: Shipyard in Baltimore
NVIRONMENTAL CONDITIONS: Strong currents and wave action made island building difficult until rock dikes were
constructed. Seaward face of islands had to be protected by cyclopean-sized armor
stone to prevent erosion.
DEPTH AT BOTTOM OF STRUCTURE: 37 m
HEIGHT: 11.25 m
WIDTH: 11.25m
FABRICATION METHOD: Shipyard in Baltimore
NVIRONMENTAL CONDITIONS: Strong currents and wave action made island building difficult until rock dikes were
constructed. Seaward face of islands had to be protected by cyclopean-sized armor
stone to prevent erosion.
Hampton Roads, Virginia,
United States
Virginia Highway Department
Merritt-Chapman & Scott, Inc
Parsons, Brinckerhoff, Hall and McDonald
91.5m
2091m
37m
Project construction
1957-03-31
23
One tube, two lanes; one each way (later became northbound lanes when Second HRT was completed in 1976)
11.25m
11.25m
First immersed tunnel to be constructed from two man-made islands. From the islands,
this crossing reached the shores by way of two causeways. Later, four other tunnels
using this same arrangement were constructed in the Hampton Roads and Chesapeake
Bay area.
this crossing reached the shores by way of two causeways. Later, four other tunnels
using this same arrangement were constructed in the Hampton Roads and Chesapeake
Bay area.
Shipyard in Baltimore
At dock near site of tunnel
Strong currents and wave action made island building difficult until rock dikes were
constructed. Seaward face of islands had to be protected by cyclopean-sized armor
stone to prevent erosion.
constructed. Seaward face of islands had to be protected by cyclopean-sized armor
stone to prevent erosion.
Catamaran barges.
Tremie concrete joints.
Continuous steel shell plate.
Screeded bedding.
1.5 m of sand, in some cases protected with riprap against scour. Backfill came from
channel dredging being done concurrently by U.S: Corps of Engineers.
channel dredging being done concurrently by U.S: Corps of Engineers.