US Bridges

US 76 over Sparrow Swamp

Fair

Florence County, South Carolina · 1.0 MI SW Timmonsville · Structure no. 000000000000682

Built
1935
90 years old, rebuilt 1958
Condition
Fair
inspected March 2024
Type
Tee Beam
Concrete
Length
275 ft
11 main spans
Daily traffic
8,600
2023 count
Owner
State
State Highway Agency

About this bridge

US 76 over Sparrow Swamp is a concrete tee beam carrying US 76 over Sparrow Swamp in Florence County, South Carolina. It was built in 1935 and reconstructed in 1958, so it is 90 years old, older than the South Carolina average of 48 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 8,600 vehicles a day, roughly 6% of them trucks, projected to reach 6,622 by 2043. The structure is 275 ft (83.8 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS 76
CrossesSparrow Swamp
Location1.0 MI SW Timmonsville
RouteU.S. Route 76
CountyFlorence County
StateSouth Carolina
Coordinates34.12278, -79.95556
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 15
Structure length275 ft (83.8 m)
Longest span25 ft (7.6 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,600 (2023)
Projected traffic6,622 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 US 76 over Sparrow Swamp built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1958.

What condition is US 76 over Sparrow Swamp 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 March 2024.

How much traffic does US 76 over Sparrow Swamp carry?

About 8,600 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 76 over Sparrow Swamp?

The structure is 275 ft (83.8 m) long with a longest span of 25 ft (7.6 m) and a deck 35 ft wide.

Who owns US 76 over Sparrow Swamp?

It is owned by the State Highway Agency.