US Bridges

US321 Sbl over SR1002

Fair

Caldwell County, North Carolina · 150 FT.S.JCT.SR1763 · Structure no. 000000000270014

Built
1953
72 years old, rebuilt 2013
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete
Length
135 ft
3 main spans
Daily traffic
16,500
2022 count
Owner
State
State Highway Agency

About this bridge

US321 Sbl over SR1002 is a concrete tee beam carrying US321 Sbl over SR1002 in Caldwell County, North Carolina. It was built in 1953 and reconstructed in 2013, so it is 72 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 16,500 vehicles a day, roughly 12% of them trucks, projected to reach 33,000 by 2040. The structure is 135 ft (41.1 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS321 Sbl
CrossesSR1002
Location150 FT.S.JCT.SR1763
RouteU.S. Route 321
CountyCaldwell County
StateNorth Carolina
Coordinates35.80659, -81.4287
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.
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 inspectionFebruary 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length135 ft (41.1 m)
Longest span46 ft (14 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2022)
Projected traffic33,000 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US321 Sbl over SR1002 built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 2013.

What condition is US321 Sbl over SR1002 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 Sbl over SR1002 carry?

About 16,500 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US321 Sbl over SR1002?

The structure is 135 ft (41.1 m) long with a longest span of 46 ft (14 m) and a deck 33 ft wide.

Who owns US321 Sbl over SR1002?

It is owned by the State Highway Agency.