US Bridges

Sc 120 over RR CSXT

Good

Sumter County, South Carolina · 2 MI SW of Sumter · Structure no. 000000000004669

Built
1965
60 years old, rebuilt 1988
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
129 ft
3 main spans
Daily traffic
23,200
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 120 over RR CSXT is a prestressed concrete stringer/multi-beam or girder carrying Sc 120 over RR CSXT in Sumter County, South Carolina. It was built in 1965 and reconstructed in 1988, so it is 60 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 23,200 vehicles a day, roughly 2% of them trucks, projected to reach 16,008 by 2043. The structure is 129 ft (39.3 m) long and 76 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSc 120
CrossesRR CSXT
Location2 MI SW of Sumter
RouteState Highway 120
Coordinates33.90866, -80.38102
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length129 ft (39.3 m)
Longest span43 ft (13.1 m)
Deck width76 ft (23.1 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,200 (2023)
Projected traffic16,008 by 2043
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sc 120 over RR CSXT built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1988.

What condition is Sc 120 over RR CSXT in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Sc 120 over RR CSXT carry?

About 23,200 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Sc 120 over RR CSXT?

The structure is 129 ft (39.3 m) long with a longest span of 43 ft (13.1 m) and a deck 76 ft wide.

Who owns Sc 120 over RR CSXT?

It is owned by the State Highway Agency.