US Bridges

US70 US321 Bus over US321

Fair

Catawba County, North Carolina · 0.3MI. E. JCT SR1361 · Structure no. 000000000350035

Built
1980
45 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
237 ft
2 main spans
Daily traffic
25,500
2022 count
Owner
State
State Highway Agency

About this bridge

US70 US321 Bus over US321 is a steel stringer/multi-beam or girder carrying US70 US321 Bus over US321 in Catawba County, North Carolina. It was built in 1980, so it is 45 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 25,500 vehicles a day, roughly 12% of them trucks, projected to reach 51,000 by 2040. The structure is 237 ft (72.2 m) long and 110 ft wide.

CarriesUS70 US321 Bus
CrossesUS321
Location0.3MI. E. JCT SR1361
RouteU.S. Route 70
Coordinates35.72214, -81.35602
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
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.
Last inspectionDecember 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating72 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length237 ft (72.2 m)
Longest span131 ft (39.9 m)
Deck width110 ft (33.5 m)
Roadway width108 ft (32.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,500 (2022)
Projected traffic51,000 by 2040
Trucks12%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 US70 US321 Bus over US321 built?

It was built in 1980, making it 45 years old in 2025.

What condition is US70 US321 Bus over US321 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 US70 US321 Bus over US321 carry?

About 25,500 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US70 US321 Bus over US321?

The structure is 237 ft (72.2 m) long with a longest span of 131 ft (39.9 m) and a deck 110 ft wide.

Who owns US70 US321 Bus over US321?

It is owned by the State Highway Agency.