US Bridges

US 21 over Sou- Ry.-In Ridgeway

Fair

Fairfield County, South Carolina · Town of Ridgeway · Structure no. 000000000000784

Built
1937
88 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
188 ft
3 main spans
Daily traffic
3,800
2023 count
Owner
State
State Highway Agency

About this bridge

US 21 over Sou- Ry.-In Ridgeway is a steel stringer/multi-beam or girder carrying US 21 over Sou- Ry.-In Ridgeway in Fairfield County, South Carolina. It was built in 1937, so it is 88 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 3,800 vehicles a day, roughly 15% of them trucks, projected to reach 5,548 by 2043. The structure is 188 ft (57.2 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 21
CrossesSou- Ry.-In Ridgeway
LocationTown of Ridgeway
RouteU.S. Route 21
Coordinates34.30299, -80.95565
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating24.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length188 ft (57.2 m)
Longest span60 ft (18.3 m)
Deck width51 ft (15.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2023)
Projected traffic5,548 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 21 over Sou- Ry.-In Ridgeway built?

It was built in 1937, making it 88 years old in 2025.

What condition is US 21 over Sou- Ry.-In Ridgeway 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 2024.

How much traffic does US 21 over Sou- Ry.-In Ridgeway carry?

About 3,800 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is US 21 over Sou- Ry.-In Ridgeway?

The structure is 188 ft (57.2 m) long with a longest span of 60 ft (18.3 m) and a deck 51 ft wide.

Who owns US 21 over Sou- Ry.-In Ridgeway?

It is owned by the State Highway Agency.