US Bridges

NC904 over Waccamaw River

Good

Columbus County, North Carolina · 0.8 MI E JCT NC905 · Structure no. 000000000470009

Built
1998
27 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
321 ft
3 main spans
Daily traffic
2,500
2022 count
Owner
State
State Highway Agency

About this bridge

NC904 over Waccamaw River is a steel continuous stringer/multi-beam or girder carrying NC904 over Waccamaw River in Columbus County, North Carolina. It was built in 1998, so it is 27 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 2,500 vehicles a day, roughly 7% of them trucks, projected to reach 5,000 by 2040. The structure is 321 ft (97.8 m) long and 33 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

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CarriesNC904
CrossesWaccamaw River
Location0.8 MI E JCT NC905
RouteState Highway 904
CountyColumbus County
StateNorth Carolina
Coordinates34.01518, -78.63161
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.9 US tons
Inventory rating54.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length321 ft (97.8 m)
Longest span120 ft (36.5 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2022)
Projected traffic5,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC904 over Waccamaw River built?

It was built in 1998, making it 27 years old in 2025.

What condition is NC904 over Waccamaw 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 September 2023.

How much traffic does NC904 over Waccamaw River carry?

About 2,500 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is NC904 over Waccamaw River?

The structure is 321 ft (97.8 m) long with a longest span of 120 ft (36.5 m) and a deck 33 ft wide.

Who owns NC904 over Waccamaw River?

It is owned by the State Highway Agency.