US Bridges

US 76 over Lake Swamp

Good

Florence County, South Carolina · 1 MI NE of Timmonsville · Structure no. 000000000010301

Built
2016
9 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
210 ft
7 main spans
Daily traffic
4,300
2023 count
Owner
State
State Highway Agency

About this bridge

US 76 over Lake Swamp is a concrete continuous slab carrying US 76 over Lake Swamp in Florence County, South Carolina. It was built in 2016, so it is 9 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 4,300 vehicles a day, roughly 6% of them trucks, projected to reach 2,881 by 2043. The structure is 210 ft (64 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS 76
CrossesLake Swamp
Location1 MI NE of Timmonsville
RouteU.S. Route 76
Coordinates34.14306, -79.91783
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHL 93
Structure length210 ft (64 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2023)
Projected traffic2,881 by 2043
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 76 over Lake Swamp built?

It was built in 2016, making it 9 years old in 2025.

What condition is US 76 over Lake 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 March 2024.

How much traffic does US 76 over Lake Swamp carry?

About 4,300 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 76 over Lake Swamp?

The structure is 210 ft (64 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns US 76 over Lake Swamp?

It is owned by the State Highway Agency.