US Bridges

US421S over NC24

Good

Sampson County, North Carolina · 1.2 Mi. N. Jct. SR1227 · Structure no. 000000001630039

Built
2022
3 years old
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
161 ft
3 main spans
Daily traffic
6,000
2019 count
Owner
State
State Highway Agency

About this bridge

US421S over NC24 is a prestressed concrete slab carrying US421S over NC24 in Sampson County, North Carolina. It was built in 2022, so it is 3 years old, younger than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,000 vehicles a day, roughly 14% of them trucks, projected to reach 12,000 by 2040. The structure is 161 ft (49 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS421S
CrossesNC24
Location1.2 Mi. N. Jct. SR1227
RouteU.S. Route 421
Coordinates34.99511, -78.33755
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating66.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length161 ft (49 m)
Longest span92 ft (28 m)
Deck width41 ft (12.5 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2019)
Projected traffic12,000 by 2040
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US421S over NC24 built?

It was built in 2022, making it 3 years old in 2025.

What condition is US421S over NC24 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does US421S over NC24 carry?

About 6,000 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is US421S over NC24?

The structure is 161 ft (49 m) long with a longest span of 92 ft (28 m) and a deck 41 ft wide.

Who owns US421S over NC24?

It is owned by the State Highway Agency.