US Bridges

Sc 61 over Trib to Ashley River

Fair

Dorchester County, South Carolina · 8.8MI SE Sumrvl · Structure no. 000000000002938

Built
1929
96 years old, rebuilt 1959
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
12,200
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 61 over Trib to Ashley River is a concrete culvert carrying Sc 61 over Trib to Ashley River in Dorchester County, South Carolina. It was built in 1929 and reconstructed in 1959, so it is 96 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 12,200 vehicles a day, roughly 5% of them trucks, projected to reach 14,884 by 2043. The structure is 32 ft (9.7 m) long and 38 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesSc 61
CrossesTrib to Ashley River
Location8.8MI SE Sumrvl
RouteState Highway 61
Coordinates32.90988, -80.14956
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
Channel and channel protection8 Very GoodNo problems noted.
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34 US tons
Inventory rating20.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length32 ft (9.7 m)
Longest span10 ft (3 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,200 (2023)
Projected traffic14,884 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$87,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 61 over Trib to Ashley River built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1959.

What condition is Sc 61 over Trib to Ashley River 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 Sc 61 over Trib to Ashley River carry?

About 12,200 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Sc 61 over Trib to Ashley River?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (3 m) and a deck 38 ft wide.

Who owns Sc 61 over Trib to Ashley River?

It is owned by the State Highway Agency.