Structure 1930067 · Wilkes County, NC

Us421 Byp. Nbl over Yadkin River

Carries Us421 Byp. Nbl over Yadkin River, 0.4 Mi.n.jct.nc268.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT225 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

225 ft end to end, longest span 74 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built196660 years old
Length224.7 ft68.5 m
Daily traffic14,000counted 2022
Last inspectedApril 2023every 24 months

Location

StateNorth Carolina
CountyWilkes
Location0.4 Mi.n.jct.nc268
CarriesUs421 Byp. Nbl
CrossesYadkin River
Coordinates36.14520, -81.17719

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length224.7 ft (68.5 m)
Max Span73.8 ft (22.5 m)
Deck Width30.8 ft (9.4 m)
Deck Area643.9 sq m
Main Spans3
Year Built1966

Traffic

Avg Daily Traffic14,000 (2022)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000001930067

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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