US Bridges

Ramp Off I-77 SB over South Fork Creek

Fair

Richland County, South Carolina · 4 MI E of Columbia · Structure no. 000000000008486

Built
1991
34 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
420 ft
1 main span
Daily traffic
9,100
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp Off I-77 SB over South Fork Creek is a steel stringer/multi-beam or girder carrying Ramp Off I-77 SB over South Fork Creek in Richland County, South Carolina. It was built in 1991, so it is 34 years old, younger 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 9,100 vehicles a day, roughly 9% of them trucks, projected to reach 19,201 by 2043. The structure is 420 ft (128 m) long and 48 ft wide.

Location

Open in Google Maps
CarriesRamp Off I-77 SB
CrossesSouth Fork Creek
Location4 MI E of Columbia
RouteInterstate 77
CountyRichland County
StateSouth Carolina
Coordinates33.99577, -80.95976
Functional classUrban Principal Arterial - Interstate

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+12 approach)
Design loadHS 20 + Mod
Structure length420 ft (128 m)
Longest span60 ft (18.3 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2023)
Projected traffic19,201 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ramp Off I-77 SB over South Fork Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Ramp Off I-77 SB over South Fork Creek 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 Ramp Off I-77 SB over South Fork Creek carry?

About 9,100 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ramp Off I-77 SB over South Fork Creek?

The structure is 420 ft (128 m) long with a longest span of 60 ft (18.3 m) and a deck 48 ft wide.

Who owns Ramp Off I-77 SB over South Fork Creek?

It is owned by the State Highway Agency.