US Bridges

US 76 over Lumber River Swamp

Good

Horry County, South Carolina · 4.2 MI NW of Floyds · Structure no. 000000000001333

Built
2006
19 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
280 ft
4 main spans
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 76 over Lumber River Swamp is a prestressed concrete continuous stringer/multi-beam or girder carrying US 76 over Lumber River Swamp in Horry County, South Carolina. It was built in 2006, so it is 19 years old, younger than the South Carolina average of 48 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 3,500 vehicles a day, roughly 14% of them trucks, projected to reach 6,090 by 2043. The structure is 280 ft (85.3 m) long and 47 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesUS 76
CrossesLumber River Swamp
Location4.2 MI NW of Floyds
RouteU.S. Route 76
Coordinates34.22511, -79.13006
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating23.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length280 ft (85.3 m)
Longest span70 ft (21.3 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic6,090 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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 US 76 over Lumber River Swamp built?

It was built in 2006, making it 19 years old in 2025.

What condition is US 76 over Lumber River Swamp 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 August 2024.

How much traffic does US 76 over Lumber River Swamp carry?

About 3,500 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US 76 over Lumber River Swamp?

The structure is 280 ft (85.3 m) long with a longest span of 70 ft (21.3 m) and a deck 47 ft wide.

Who owns US 76 over Lumber River Swamp?

It is owned by the State Highway Agency.