US Bridges

US17 Sbl over Royal Oak River

Fair

Brunswick County, North Carolina · 0.8 MI.N.JCT.NC211 · Structure no. 000000000190052

Built
1991
34 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
129 ft
3 main spans
Daily traffic
29,000
2021 count
Owner
State
State Highway Agency

About this bridge

US17 Sbl over Royal Oak River is a prestressed concrete stringer/multi-beam or girder carrying US17 Sbl over Royal Oak River in Brunswick County, North Carolina. It was built in 1991, so it is 34 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 29,000 vehicles a day, roughly 14% of them trucks, projected to reach 58,000 by 2040. The structure is 129 ft (39.3 m) long and 39 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

Open in Google Maps
CarriesUS17 Sbl
CrossesRoyal Oak River
Location0.8 MI.N.JCT.NC211
RouteU.S. Route 17
CountyBrunswick County
StateNorth Carolina
Coordinates34.02313, -78.26341
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 protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length129 ft (39.3 m)
Longest span44 ft (13.4 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,000 (2021)
Projected traffic58,000 by 2040
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 US17 Sbl over Royal Oak River built?

It was built in 1991, making it 34 years old in 2025.

What condition is US17 Sbl over Royal 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 May 2023.

How much traffic does US17 Sbl over Royal Oak River carry?

About 29,000 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is US17 Sbl over Royal Oak River?

The structure is 129 ft (39.3 m) long with a longest span of 44 ft (13.4 m) and a deck 39 ft wide.

Who owns US17 Sbl over Royal Oak River?

It is owned by the State Highway Agency.