US Bridges

S-25-510 over Unnamed Stream

Fair

Hampton County, South Carolina · 6MI SW Hampton · Structure no. 000000000004809

Built
1966
59 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
53 ft
5 main spans
Daily traffic
125
2023 count
Owner
State
State Highway Agency

About this bridge

S-25-510 over Unnamed Stream is a concrete culvert carrying S-25-510 over Unnamed Stream in Hampton County, South Carolina. It was built in 1966, so it is 59 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 125 vehicles a day, roughly 8% of them trucks, projected to reach 183 by 2043. The structure is 53 ft (16.2 m) long and 72 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-25-510
CrossesUnnamed Stream
Location6MI SW Hampton
RouteState Highway 510
Coordinates32.83596, -81.16395
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 16 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadH 15
Structure length53 ft (16.2 m)
Longest span10 ft (3 m)
Deck width72 ft (21.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic183 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 S-25-510 over Unnamed Stream built?

It was built in 1966, making it 59 years old in 2025.

What condition is S-25-510 over Unnamed Stream 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 January 2025.

How much traffic does S-25-510 over Unnamed Stream carry?

About 125 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is S-25-510 over Unnamed Stream?

The structure is 53 ft (16.2 m) long with a longest span of 10 ft (3 m) and a deck 72 ft wide.

Who owns S-25-510 over Unnamed Stream?

It is owned by the State Highway Agency.