US Bridges

US421 Nbl Byp. over NC268

Good

Wilkes County, North Carolina · .2 MI.S.JCT.SR1198 · Structure no. 000000001930070

Built
2003
22 years old
Condition
Good
inspected April 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
210 ft
3 main spans
Daily traffic
16,250
2019 count
Owner
State
State Highway Agency

About this bridge

US421 Nbl Byp. over NC268 is a steel stringer/multi-beam or girder carrying US421 Nbl Byp. over NC268 in Wilkes County, North Carolina. It was built in 2003, so it is 22 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 16,250 vehicles a day, roughly 12% of them trucks, projected to reach 32,500 by 2040. The structure is 210 ft (64 m) long and 40 ft wide.

CarriesUS421 Nbl Byp.
CrossesNC268
Location.2 MI.S.JCT.SR1198
RouteU.S. Route 421
Coordinates36.14112, -81.17343
Functional classUrban Other Principal Arterial

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 inspectionApril 2021
Inspection intervalevery 48 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 rating66.9 US tons
Inventory rating39.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length210 ft (64 m)
Longest span120 ft (36.5 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,250 (2019)
Projected traffic32,500 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-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 US421 Nbl Byp. over NC268 built?

It was built in 2003, making it 22 years old in 2025.

What condition is US421 Nbl Byp. over NC268 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 April 2021.

How much traffic does US421 Nbl Byp. over NC268 carry?

About 16,250 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is US421 Nbl Byp. over NC268?

The structure is 210 ft (64 m) long with a longest span of 120 ft (36.5 m) and a deck 40 ft wide.

Who owns US421 Nbl Byp. over NC268?

It is owned by the State Highway Agency.