US Bridges

US421 Byp Sbl over Nc 268

Fair

Wilkes County, North Carolina · .7 MI.N.JCT.NC16 · Structure no. 000000001930770

Built
2004
21 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
212 ft
3 main spans
Daily traffic
12,500
2021 count
Owner
State
State Highway Agency

About this bridge

US421 Byp Sbl over Nc 268 is a steel stringer/multi-beam or girder carrying US421 Byp Sbl over Nc 268 in Wilkes County, North Carolina. It was built in 2004, so it is 21 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 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 12,500 vehicles a day, roughly 12% of them trucks, projected to reach 25,000 by 2040. The structure is 212 ft (64.6 m) long and 40 ft wide.

CarriesUS421 Byp Sbl
CrossesNc 268
Location.7 MI.N.JCT.NC16
RouteU.S. Route 421
Coordinates36.14118, -81.17379
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
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 length212 ft (64.6 m)
Longest span119 ft (36.2 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,500 (2021)
Projected traffic25,000 by 2040
Trucks12%
Lanes on structure2
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 US421 Byp Sbl over Nc 268 built?

It was built in 2004, making it 21 years old in 2025.

What condition is US421 Byp Sbl over Nc 268 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 April 2023.

How much traffic does US421 Byp Sbl over Nc 268 carry?

About 12,500 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is US421 Byp Sbl over Nc 268?

The structure is 212 ft (64.6 m) long with a longest span of 119 ft (36.2 m) and a deck 40 ft wide.

Who owns US421 Byp Sbl over Nc 268?

It is owned by the State Highway Agency.