US Bridges

I85 over South Fork Catawba River

Fair

Gaston County, North Carolina · 0.5 Mi. N. Jct. NC7 · Structure no. 000000000710143

Built
1960
65 years old, rebuilt 1992
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
896 ft
5 main spans
Daily traffic
65,500
2020 count
Owner
State
State Highway Agency

About this bridge

I85 over South Fork Catawba River is a steel continuous stringer/multi-beam or girder carrying I85 over South Fork Catawba River in Gaston County, North Carolina. It was built in 1960 and reconstructed in 1992, so it is 65 years old, older than the North Carolina average of 38.7 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 65,500 vehicles a day, roughly 16% of them trucks, projected to reach 131,000 by 2040. The structure is 896 ft (273.1 m) long and 111 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI85
CrossesSouth Fork Catawba River
Location0.5 Mi. N. Jct. NC7
RouteInterstate 85
Coordinates35.26424, -81.07939
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating36.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+9 approach)
Design loadHS 20 + Mod
Structure length896 ft (273.1 m)
Longest span80 ft (24.3 m)
Deck width111 ft (33.7 m)
Roadway width103 ft (31.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,500 (2020)
Projected traffic131,000 by 2040
Trucks16%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I85 over South Fork Catawba River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1992.

What condition is I85 over South Fork Catawba River 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 May 2024.

How much traffic does I85 over South Fork Catawba River carry?

About 65,500 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I85 over South Fork Catawba River?

The structure is 896 ft (273.1 m) long with a longest span of 80 ft (24.3 m) and a deck 111 ft wide.

Who owns I85 over South Fork Catawba River?

It is owned by the State Highway Agency.