US Bridges

S-4-1179 over I-85 Overpass

Fair

Anderson County, South Carolina · 12.0 MI NE of Anderson · Structure no. 000000000004040

Built
1963
62 years old, rebuilt 2000
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
293 ft
5 main spans
Daily traffic
400
2023 count
Owner
State
State Highway Agency

About this bridge

S-4-1179 over I-85 Overpass is a prestressed concrete stringer/multi-beam or girder carrying S-4-1179 over I-85 Overpass in Anderson County, South Carolina. It was built in 1963 and reconstructed in 2000, so it is 62 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 400 vehicles a day, roughly 5% of them trucks, projected to reach 512 by 2043. The structure is 293 ft (89.3 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS-4-1179
CrossesI-85 Overpass
Location12.0 MI NE of Anderson
RouteState Highway 1179
CountyAnderson County
StateSouth Carolina
Coordinates34.66343, -82.55504
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length293 ft (89.3 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2023)
Projected traffic512 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 S-4-1179 over I-85 Overpass built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2000.

What condition is S-4-1179 over I-85 Overpass 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 November 2023.

How much traffic does S-4-1179 over I-85 Overpass carry?

About 400 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-4-1179 over I-85 Overpass?

The structure is 293 ft (89.3 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

Who owns S-4-1179 over I-85 Overpass?

It is owned by the State Highway Agency.