US Bridges

S-4-1097 over I-85 Overpass

Fair

Anderson County, South Carolina · 7.1 MI NW Anderson · Structure no. 000000000003583

Built
1961
64 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete
Length
210 ft
4 main spans
Daily traffic
175
2023 count
Owner
State
State Highway Agency

About this bridge

S-4-1097 over I-85 Overpass is a concrete tee beam carrying S-4-1097 over I-85 Overpass in Anderson County, South Carolina. It was built in 1961, so it is 64 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 175 vehicles a day, roughly 5% of them trucks, projected to reach 224 by 2043. The structure is 210 ft (64 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS-4-1097
CrossesI-85 Overpass
Location7.1 MI NW Anderson
RouteState Highway 1097
CountyAnderson County
StateSouth Carolina
Coordinates34.56536, -82.74706
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length210 ft (64 m)
Longest span55 ft (16.8 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck15 ft (4.7 m)

Traffic and service

Average daily traffic175 (2023)
Projected traffic224 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 S-4-1097 over I-85 Overpass built?

It was built in 1961, making it 64 years old in 2025.

What condition is S-4-1097 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-4-1097 over I-85 Overpass carry?

About 175 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-4-1097 over I-85 Overpass?

The structure is 210 ft (64 m) long with a longest span of 55 ft (16.8 m) and a deck 23 ft wide.

Who owns S-4-1097 over I-85 Overpass?

It is owned by the State Highway Agency.