US Bridges

US421S over US1

Good

Lee County, North Carolina · 1.1 Mi. N. Jct. SR1415 · Structure no. 000000001050116

Built
2007
18 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
207 ft
2 main spans
Daily traffic
16,000
2021 count
Owner
State
State Highway Agency

About this bridge

US421S over US1 is a prestressed concrete continuous stringer/multi-beam or girder carrying US421S over US1 in Lee County, North Carolina. It was built in 2007, so it is 18 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 16,000 vehicles a day, roughly 12% of them trucks, projected to reach 32,000 by 2040. The structure is 207 ft (63 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS421S
CrossesUS1
Location1.1 Mi. N. Jct. SR1415
RouteU.S. Route 421
Coordinates35.51103, -79.1879
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length207 ft (63 m)
Longest span101 ft (30.7 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2021)
Projected traffic32,000 by 2040
Trucks12%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US421S over US1 built?

It was built in 2007, making it 18 years old in 2025.

What condition is US421S over US1 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 August 2024.

How much traffic does US421S over US1 carry?

About 16,000 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is US421S over US1?

The structure is 207 ft (63 m) long with a longest span of 101 ft (30.7 m) and a deck 40 ft wide.

Who owns US421S over US1?

It is owned by the State Highway Agency.