US Bridges

S-25-20 over Unnamed -Ditch-

PoorPosted for load

Hampton County, South Carolina · 7.5MI W Estill · Structure no. 000000000005091

Built
1967
58 years old
Condition
Poor
inspected January 2025
Type
Slab
Concrete
Length
30 ft
2 main spans
Daily traffic
375
2023 count
Owner
State
State Highway Agency

About this bridge

S-25-20 over Unnamed -Ditch- is a concrete slab carrying S-25-20 over Unnamed -Ditch- in Hampton County, South Carolina. It was built in 1967, so it is 58 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 375 vehicles a day, roughly 8% of them trucks, projected to reach 521 by 2043. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS-25-20
CrossesUnnamed -Ditch-
Location7.5MI W Estill
RouteState Highway 20
Coordinates32.74694, -81.36549
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating7.8 US tons
Inventory rating2.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 10
Structure length30 ft (9.1 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2023)
Projected traffic521 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$225,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-25-20 over Unnamed -Ditch- built?

It was built in 1967, making it 58 years old in 2025.

What condition is S-25-20 over Unnamed -Ditch- in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.

How much traffic does S-25-20 over Unnamed -Ditch- carry?

About 375 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is S-25-20 over Unnamed -Ditch-?

The structure is 30 ft (9.1 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-25-20 over Unnamed -Ditch-?

It is owned by the State Highway Agency.