US Bridges

US29 & US74 over I85 Nbl

Fair

Gaston County, North Carolina · 0.7 Mi. S. Jct. SR1320 · Structure no. 000000000710046

Built
1982
43 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
209 ft
3 main spans
Daily traffic
7,000
2022 count
Owner
State
State Highway Agency

About this bridge

US29 & US74 over I85 Nbl is a steel stringer/multi-beam or girder carrying US29 & US74 over I85 Nbl in Gaston County, North Carolina. It was built in 1982, so it is 43 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 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 7,000 vehicles a day, roughly 12% of them trucks, projected to reach 14,000 by 2040. The structure is 209 ft (63.7 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS29 & US74
CrossesI85 Nbl
Location0.7 Mi. S. Jct. SR1320
RouteU.S. Route 29
CountyGaston County
StateNorth Carolina
Coordinates35.25014, -81.298
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
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 rating63.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length209 ft (63.7 m)
Longest span109 ft (33.2 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2022)
Projected traffic14,000 by 2040
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 US29 & US74 over I85 Nbl built?

It was built in 1982, making it 43 years old in 2025.

What condition is US29 & US74 over I85 Nbl 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 June 2024.

How much traffic does US29 & US74 over I85 Nbl carry?

About 7,000 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US29 & US74 over I85 Nbl?

The structure is 209 ft (63.7 m) long with a longest span of 109 ft (33.2 m) and a deck 51 ft wide.

Who owns US29 & US74 over I85 Nbl?

It is owned by the State Highway Agency.