US Bridges

US321 over Little Gunpowder Creek

Fair

Caldwell County, North Carolina · .1 MI.N.JCT.SR1252 · Structure no. 000000000270024

Built
1954
71 years old, rebuilt 1969
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
37 ft
1 main span
Daily traffic
33,000
2022 count
Owner
State
State Highway Agency

About this bridge

US321 over Little Gunpowder Creek is a concrete culvert carrying US321 over Little Gunpowder Creek in Caldwell County, North Carolina. It was built in 1954 and reconstructed in 1969, so it is 71 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 33,000 vehicles a day, roughly 12% of them trucks, projected to reach 66,000 by 2040. The structure is 37 ft (11.2 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS321
CrossesLittle Gunpowder Creek
Location.1 MI.N.JCT.SR1252
RouteU.S. Route 321
Coordinates35.81852, -81.44053
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 15
Structure length37 ft (11.2 m)
Longest span37 ft (11.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,000 (2022)
Projected traffic66,000 by 2040
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US321 over Little Gunpowder Creek built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1969.

What condition is US321 over Little Gunpowder 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 February 2024.

How much traffic does US321 over Little Gunpowder Creek carry?

About 33,000 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US321 over Little Gunpowder Creek?

The structure is 37 ft (11.2 m) long with a longest span of 37 ft (11.2 m).

Who owns US321 over Little Gunpowder Creek?

It is owned by the State Highway Agency.