US Bridges

NC24 over White Oak River

Fair

Onslow County, North Carolina · 0.6 Mi. E. Jct. SR1447 · Structure no. 000000001330030

Built
2001
24 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
887 ft
14 main spans
Daily traffic
25,500
2021 count
Owner
State
State Highway Agency

About this bridge

NC24 over White Oak River is a prestressed concrete continuous stringer/multi-beam or girder carrying NC24 over White Oak River in Onslow County, North Carolina. It was built in 2001, so it is 24 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 6 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 25,500 vehicles a day, roughly 14% of them trucks, projected to reach 51,000 by 2040. The structure is 887 ft (270.3 m) long and 77 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesNC24
CrossesWhite Oak River
Location0.6 Mi. E. Jct. SR1447
RouteState Highway 24
Coordinates34.68328, -77.11312
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating62.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadHS 25 or greater
Structure length887 ft (270.3 m)
Longest span63 ft (19.2 m)
Deck width77 ft (23.6 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,500 (2021)
Projected traffic51,000 by 2040
Trucks14%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC24 over White Oak River built?

It was built in 2001, making it 24 years old in 2025.

What condition is NC24 over White Oak River 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 April 2024.

How much traffic does NC24 over White Oak River carry?

About 25,500 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is NC24 over White Oak River?

The structure is 887 ft (270.3 m) long with a longest span of 63 ft (19.2 m) and a deck 77 ft wide.

Who owns NC24 over White Oak River?

It is owned by the State Highway Agency.