US Bridges

US 301 over Log Branch

Fair

Allendale County, South Carolina · 2 MI N of Allendale · Structure no. 000000000002111

Built
1955
70 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
1,800
2023 count
Owner
State
State Highway Agency

About this bridge

US 301 over Log Branch is a concrete culvert carrying US 301 over Log Branch in Allendale County, South Carolina. It was built in 1955, so it is 70 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 1,800 vehicles a day, roughly 26% of them trucks, projected to reach 3,132 by 2043. The structure is 32 ft (9.7 m) long and 115 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 301
CrossesLog Branch
Location2 MI N of Allendale
RouteU.S. Route 301
CountyAllendale County
StateSouth Carolina
Coordinates33.02929, -81.28671
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length32 ft (9.7 m)
Longest span10 ft (3 m)
Deck width115 ft (35.1 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2023)
Projected traffic3,132 by 2043
Trucks26%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 301 over Log Branch built?

It was built in 1955, making it 70 years old in 2025.

What condition is US 301 over Log Branch 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 May 2024.

How much traffic does US 301 over Log Branch carry?

About 1,800 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is US 301 over Log Branch?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (3 m) and a deck 115 ft wide.

Who owns US 301 over Log Branch?

It is owned by the State Highway Agency.