US Bridges

Sc 8 over I-85

Fair

Anderson County, South Carolina · 4.9MI NW of Williamston · Structure no. 000000000004027

Built
1963
62 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
260 ft
4 main spans
Daily traffic
9,900
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 8 over I-85 is a prestressed concrete stringer/multi-beam or girder carrying Sc 8 over I-85 in Anderson County, South Carolina. It was built in 1963, 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 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 9,900 vehicles a day, roughly 12% of them trucks, projected to reach 14,355 by 2043. The structure is 260 ft (79.2 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSc 8
CrossesI-85
Location4.9MI NW of Williamston
RouteState Highway 8
CountyAnderson County
StateSouth Carolina
Coordinates34.67471, -82.53677
Functional classRural 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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 rating74.6 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length260 ft (79.2 m)
Longest span65 ft (19.8 m)
Deck width39 ft (11.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,900 (2023)
Projected traffic14,355 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$900,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sc 8 over I-85 built?

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

What condition is Sc 8 over I-85 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 December 2023.

How much traffic does Sc 8 over I-85 carry?

About 9,900 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is Sc 8 over I-85?

The structure is 260 ft (79.2 m) long with a longest span of 65 ft (19.8 m) and a deck 39 ft wide.

Who owns Sc 8 over I-85?

It is owned by the State Highway Agency.