US Bridges

US301 over Swift Crk. Overflow

Fair

Nash County, North Carolina · 3.5 MI.S.JCT.NC33 · Structure no. 000000001270070

Built
1920
105 years old, rebuilt 1937
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
42 ft
4 main spans
Daily traffic
6,900
2021 count
Owner
State
State Highway Agency

About this bridge

US301 over Swift Crk. Overflow is a concrete continuous culvert carrying US301 over Swift Crk. Overflow in Nash County, North Carolina. It was built in 1920 and reconstructed in 1937, so it is 105 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 6,900 vehicles a day, roughly 8% of them trucks, projected to reach 13,800 by 2040. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 6.8 mi (11 km).

CarriesUS301
CrossesSwift Crk. Overflow
Location3.5 MI.S.JCT.NC33
RouteU.S. Route 301
Coordinates36.06805, -77.74899
Functional classRural Minor 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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2021)
Projected traffic13,800 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

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 US301 over Swift Crk. Overflow built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1937.

What condition is US301 over Swift Crk. Overflow 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 March 2024.

How much traffic does US301 over Swift Crk. Overflow carry?

About 6,900 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is US301 over Swift Crk. Overflow?

The structure is 42 ft (12.8 m) long with a longest span of 10 ft (3 m).

Who owns US301 over Swift Crk. Overflow?

It is owned by the State Highway Agency.