US Bridges

US64 over Croatan Sound

Poor

Dare County, North Carolina · 1.6 Mi. E. Jct. SR1113 · Structure no. 000000000550009

Built
1955
70 years old, rebuilt 1966
Condition
Poor
inspected May 2023
Type
Girder and Floorbeam System
Steel
Length
14,265 ft
1 main span
Daily traffic
2,400
2021 count
Owner
State
State Highway Agency

About this bridge

US64 over Croatan Sound is a steel girder and floorbeam system carrying US64 over Croatan Sound in Dare County, North Carolina. It was built in 1955 and reconstructed in 1966, so it is 70 years old, older than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 2,400 vehicles a day, roughly 6% of them trucks, projected to reach 4,800 by 2040. The structure is 14,265 ft (4,348 m) long and 28 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

CarriesUS64
CrossesCroatan Sound
Location1.6 Mi. E. Jct. SR1113
RouteU.S. Route 64
Coordinates35.91968, -75.74582
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+312 approach)
Design loadHS 20 + Mod
Structure length14,265 ft (4,348 m)
Longest span130 ft (39.6 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2021)
Projected traffic4,800 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed15.5 mi (25 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US64 over Croatan Sound built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1966.

What condition is US64 over Croatan Sound in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does US64 over Croatan Sound carry?

About 2,400 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is US64 over Croatan Sound?

The structure is 14,265 ft (4,348 m) long with a longest span of 130 ft (39.6 m) and a deck 28 ft wide.

Who owns US64 over Croatan Sound?

It is owned by the State Highway Agency.