US Bridges

US17B over Shallotte River

Fair

Brunswick County, North Carolina · 0.1MI.N. Jct. SR1316 · Structure no. 000000000190019

Built
1929
96 years old, rebuilt 1957
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
2 main spans
Daily traffic
8,500
2021 count
Owner
State
State Highway Agency

About this bridge

US17B over Shallotte River is a steel stringer/multi-beam or girder carrying US17B over Shallotte River in Brunswick County, North Carolina. It was built in 1929 and reconstructed in 1957, so it is 96 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 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 8,500 vehicles a day, roughly 7% of them trucks, projected to reach 17,000 by 2040. The structure is 100 ft (30.4 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS17B
CrossesShallotte River
Location0.1MI.N. Jct. SR1316
RouteU.S. Route 17
CountyBrunswick County
StateNorth Carolina
Coordinates33.96074, -78.40858
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.4 m)
Longest span49 ft (14.9 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,500 (2021)
Projected traffic17,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US17B over Shallotte River built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1957.

What condition is US17B over Shallotte 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 June 2023.

How much traffic does US17B over Shallotte River carry?

About 8,500 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is US17B over Shallotte River?

The structure is 100 ft (30.4 m) long with a longest span of 49 ft (14.9 m) and a deck 35 ft wide.

Who owns US17B over Shallotte River?

It is owned by the State Highway Agency.