US Bridges

US64 over Roanoke Sound

Fair

Dare County, North Carolina · 1.2 Mi. E. Jct. US64 Bus · Structure no. 000000000550012

Built
1990
35 years old, rebuilt 2013
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
5,543 ft
73 main spans
Daily traffic
21,000
2022 count
Owner
State
State Highway Agency

About this bridge

US64 over Roanoke Sound is a prestressed concrete stringer/multi-beam or girder carrying US64 over Roanoke Sound in Dare County, North Carolina. It was built in 1990 and reconstructed in 2013, so it is 35 years old, younger than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 21,000 vehicles a day, roughly 14% of them trucks, projected to reach 42,000 by 2040. The structure is 5,543 ft (1,689.5 m) long and 62 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUS64
CrossesRoanoke Sound
Location1.2 Mi. E. Jct. US64 Bus
RouteU.S. Route 64
CountyDare County
StateNorth Carolina
Coordinates35.89504, -75.63099
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans73
Design loadHS 20 + Mod
Structure length5,543 ft (1,689.5 m)
Longest span138 ft (42 m)
Deck width62 ft (18.9 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,000 (2022)
Projected traffic42,000 by 2040
Trucks14%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US64 over Roanoke Sound built?

It was built in 1990, making it 35 years old in 2025. It was reconstructed in 2013.

What condition is US64 over Roanoke Sound in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does US64 over Roanoke Sound carry?

About 21,000 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is US64 over Roanoke Sound?

The structure is 5,543 ft (1,689.5 m) long with a longest span of 138 ft (42 m) and a deck 62 ft wide.

Who owns US64 over Roanoke Sound?

It is owned by the State Highway Agency.