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Caisson Cutting Edges
The Washington State Department of Transportation awarded a construction contract to build an
additional bridge alongside the original Tacoma Narrows Bridge. Todd was awarded the contract to
build both of the "cutting edges" which were used as the dredging tool for the placement of
the bridge caissons and later the main bridge towers. Both cutting edges were launched like ships
into the Duwamish River. These units were approximately 81' X 130' with 15 air containment domes
that were designed to provide buoyancy during the controlled sinking as the towers were being constructed
on top of them.
This project consisted of almost 1500 tons of steel and just over 100,000 man-hours. Todd was able to
perform all of the steel work, including the associated outfitting, within 4 and 1/2 months.
Principal Characteristics:
- 131 Ft. Length (overall)
- 81 Ft. Beam
- 18 Ft. Depth
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Power Barge
Built by Todd for export, the four 18,900 KW diesel engines deliver 70.5 MW of electrical power from
this intensely outfitted vessel. Built, tested, and delivered on time in only 8 months, this classed
vessel required 1600 LT of steel, 1800 feet of HVAC ductwork, 33,000 feet of pipe, and over 210,000
feet of electrical cable.
Principal Characteristics:
- 206 Ft. Length (overall)
- 104 Ft. Beam
- 15 Ft. Depth
- 70.5 MW Power Capacity
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Jumbo Mark II Ferries
In the period from 1995 to 1999 Todd built the three Mark II Jumbo Ferries for Washington State. The
Tacoma, Wenatchee, and Puyallup are all-steel double-ended diesel-electric ferries with capacity of
2500 passengers and 218 automobiles. Built using modern zone, unit, and module design and fabrication,
these vessels are now the largest vehicle ferries in Puget Sound, and deliver day-in, day-out reliability to
the traveling and commuting citizens of the state.
Principal Characteristics:
- 460 Ft. Length (overall)
- 90 Ft. Beam
- 25.75 Ft. Depth
- 18 Knots Service Speed
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Dry Docks
Todd has undertaken significant repairs and upgrades to our two steel dry docks over the past
few years. This work consists of removing large sections of the side-walls (approximately 50' X 30')
and deck corners (approximately 10' X 30') and replacing them with new steel. This work will enable us
to maintain the capacity within the shipyard for dry-docking a diverse group of vessels for a number
of commercial and government customers. This steel repair work involved about 50,000 man-hours a
year over the course of the last few years. All of this work has been completed without impacting schedules
of the other projects within the shipyard.
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