US Bridges

US 301 over Buck Swamp

Fair

Dillon County, South Carolina · 1.0MI NE of Latta · Structure no. 000000000000022

Built
1930
95 years old, rebuilt 1967
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete
Length
88 ft
4 main spans
Daily traffic
9,100
2023 count
Owner
State
State Highway Agency

About this bridge

US 301 over Buck Swamp is a concrete tee beam carrying US 301 over Buck Swamp in Dillon County, South Carolina. It was built in 1930 and reconstructed in 1967, so it is 95 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 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 9,100 vehicles a day, roughly 7% of them trucks, projected to reach 15,834 by 2043. The structure is 88 ft (26.8 m) long and 78 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 301
CrossesBuck Swamp
Location1.0MI NE of Latta
RouteU.S. Route 301
CountyDillon County
StateSouth Carolina
Coordinates34.35203, -79.42012
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating14.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length88 ft (26.8 m)
Longest span22 ft (6.7 m)
Deck width78 ft (23.7 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2023)
Projected traffic15,834 by 2043
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 301 over Buck Swamp built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1967.

What condition is US 301 over Buck 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 February 2024.

How much traffic does US 301 over Buck Swamp carry?

About 9,100 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US 301 over Buck Swamp?

The structure is 88 ft (26.8 m) long with a longest span of 22 ft (6.7 m) and a deck 78 ft wide.

Who owns US 301 over Buck Swamp?

It is owned by the State Highway Agency.