- North Carolina Department of Transportation (NCDOT)
- Beaufort, North Carolina
- Our Role
- Construction Management, Construction Inspection
- 3,395 feet
- Construction Cost
- $66.4 million
- New Construction
- 4 years
- Change from a drawbridge to a fixed-span bridge improves vehicular and waterway commute
- Replacement of an aging bridge increases safety
- Widening U.S. 70 to four lanes improves traffic flow.
The North Carolina Department of Transportation (NCDOT) had a challenge – improve the flow of vehicular traffic between Radio Island and Beaufort. A plan was designed to reduce delays and increase safety along the U.S. 70 Corridor from Raleigh to the Outer Banks. Replacement of the Gallants Channel Bridge and the widening of U.S. 70 were a crucial part of the plan. The more than 50-year-old, two-lane, bascule-style bridge was to be replaced with a 65-foot, high-rise continuous-span bridge with four lanes.
The project would improve vehicular and waterway traffic flow, which had been obstructed by the frequent mechanical and electrical issues of the previous bridge. Gannett Fleming’s team of experienced construction engineering inspection (CEI) professionals was hired to make sure the project was completed safely, on time, and to the highest quality.
Gannett Fleming provided CEI services to NCDOT in support of infrastructure improvements along U.S. Route 70, including the replacement of the bridge. We performed inspection services for the grading, drainage, paving, signals, and structure improvements from Radio Island to north of Beaufort, North Carolina. As NCDOT’s on-site inspection leader, our team made certain that the contract specifications were met both in execution and in the materials used.
- The bridge was built over salt water requiring concretes to contain a corrosion inhibitor, including 15,649 cubic yards of Class AA concrete and 2,100 cubic yards of lightweight concrete
- A 1,400 foot-long temporary trestle was erected to facilitate construction of the bridge built in a wetland area
- Massive cranes with 150- to 250-foot booms enable efficient access to the carpenter barges delivering the piles and concrete.
- No. 1 Bridge, 2017, Roads & Bridges, 2017 Roads & Bridges Top 10 Bridges.