US Bridges

Sc 555 over Sc 277

Fair

Richland County, South Carolina · 2 MI N of Columbia · Structure no. 000000000006574

Built
1974
51 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
341 ft
4 main spans
Daily traffic
11,200
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 555 over Sc 277 is a steel continuous stringer/multi-beam or girder carrying Sc 555 over Sc 277 in Richland County, South Carolina. It was built in 1974, so it is 51 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 11,200 vehicles a day, roughly 2% of them trucks, projected to reach 15,120 by 2043. The structure is 341 ft (103.9 m) long and 76 ft wide.

CarriesSc 555
CrossesSc 277
Location2 MI N of Columbia
RouteState Highway 555
Coordinates34.03556, -81.02333
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.2 US tons
Inventory rating49.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length341 ft (103.9 m)
Longest span112 ft (34.1 m)
Deck width76 ft (23.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,200 (2023)
Projected traffic15,120 by 2043
Trucks2%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 555 over Sc 277 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Sc 555 over Sc 277 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 February 2024.

How much traffic does Sc 555 over Sc 277 carry?

About 11,200 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Sc 555 over Sc 277?

The structure is 341 ft (103.9 m) long with a longest span of 112 ft (34.1 m) and a deck 76 ft wide.

Who owns Sc 555 over Sc 277?

It is owned by the State Highway Agency.