US Bridges

I-85 Nbl over Rocky Creek

Fair

Anderson County, South Carolina · 16.2MI NW of Anderson · Structure no. 000000000003783

Built
1962
63 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
200 ft
4 main spans
Daily traffic
22,950
2023 count
Owner
State
State Highway Agency

About this bridge

I-85 Nbl over Rocky Creek is a prestressed concrete stringer/multi-beam or girder carrying I-85 Nbl over Rocky Creek in Anderson County, South Carolina. It was built in 1962, so it is 63 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 22,950 vehicles a day, roughly 25% of them trucks, projected to reach 40,163 by 2043. The structure is 200 ft (61 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesI-85 Nbl
CrossesRocky Creek
Location16.2MI NW of Anderson
RouteInterstate 85
CountyAnderson County
StateSouth Carolina
Coordinates34.51176, -82.9358
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length200 ft (61 m)
Longest span50 ft (15.2 m)
Deck width41 ft (12.6 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,950 (2023)
Projected traffic40,163 by 2043
Trucks25%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-85 Nbl over Rocky Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is I-85 Nbl over Rocky 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 December 2024.

How much traffic does I-85 Nbl over Rocky Creek carry?

About 22,950 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is I-85 Nbl over Rocky Creek?

The structure is 200 ft (61 m) long with a longest span of 50 ft (15.2 m) and a deck 41 ft wide.

Who owns I-85 Nbl over Rocky Creek?

It is owned by the State Highway Agency.