US Bridges

US17N.BYP over White Oak River

Good

Onslow County, North Carolina · 2.8 Mi. South of SR1330 · Structure no. 000000001330315

Built
2019
6 years old
Condition
Good
inspected January 2024
Type
Slab
Prestressed Concrete
Length
160 ft
2 main spans
Daily traffic
8,800
2021 count
Owner
State
State Highway Agency

About this bridge

US17N.BYP over White Oak River is a prestressed concrete slab carrying US17N.BYP over White Oak River in Onslow County, North Carolina. It was built in 2019, so it is 6 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,800 vehicles a day, roughly 14% of them trucks, projected to reach 17,600 by 2040. The structure is 160 ft (48.7 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS17N.BYP
CrossesWhite Oak River
Location2.8 Mi. South of SR1330
RouteU.S. Route 17
Coordinates34.89359, -77.24349
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length160 ft (48.7 m)
Longest span77 ft (23.4 m)
Deck width41 ft (12.5 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (2021)
Projected traffic17,600 by 2040
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US17N.BYP over White Oak River built?

It was built in 2019, making it 6 years old in 2025.

What condition is US17N.BYP over White Oak River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does US17N.BYP over White Oak River carry?

About 8,800 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is US17N.BYP over White Oak River?

The structure is 160 ft (48.7 m) long with a longest span of 77 ft (23.4 m) and a deck 41 ft wide.

Who owns US17N.BYP over White Oak River?

It is owned by the State Highway Agency.