Description
The new state Route 16 Tacoma Narrows Bridge — the first long-span suspension bridge to be built in the United States since 1964 — will be 5,413 feet long with a 2,800-foot main span and approximately 510-foot-tall towers. It will feature three traffic lanes, shoulders on both sides and a separated bicycle/pedestrian path.
The new bridge will carry eastbound traffic. The configuration will match and run parallel to westbound traffic on the old bridge, and allow for standard 12-foot-wide traffic lanes. The design also allows for a future second deck.
Related construction will include a toll plaza, access lanes and a new interchange on the west shore. An additional high-occupancy-vehicle traffic lane with be constructed in each direction between the nearest interchanges on each side.
Portions of the existing bridge will be structurally upgraded and reconfigured to three full-size lanes. The existing bridge deck will be modified to remove surface grates.
Tacoma Narrows Constructors, a joint venture of Bechtel and Kiewit Pacific, is responsible for carrying out the bridge design and construction project. The team is providing engineering management, procurement and construction under a design-build, fixed-price and lump-sum contract with the state Department of Transportation.
The state Transportation Commission will establish tolls with advice from a citizen advisory committee of people who live in the project area and are appointed by the Governor. TransCore will supply the toll system and install it under a $9 million contract.
Design/build team:
Tacoma Narrows Constructors, a joint venture of Bechtel and Kiewit Pacific, 3212 50th St. Court, Suite B200, Gig Harbor, WA 98335-8527, (253) 853-9300
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Other Participants
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Parsons/HNTB
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TransCore
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Todd Shipyards
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Rowan Williams Davies
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& Irwin
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CH2M Hill
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