Structure 810384 · Guilford County, NC

I40 Us421 over Nc68

Carries I40 Us421 over Nc68, 0.9 Mi. W. Jct. Sr1556.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT274 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 6/9 · sets the rating

274 ft end to end, longest span 97 ft: about 4 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.

Built1981rebuilt 2004
Length274.0 ft83.5 m
Daily traffic120,000counted 2022
Last inspectedNovember 2024every 24 months

Location

StateNorth Carolina
CountyGuilford
Location0.9 Mi. W. Jct. Sr1556
CarriesI40 Us421
CrossesNc68
Coordinates36.08039, -79.95933

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length274.0 ft (83.5 m)
Max Span96.8 ft (29.5 m)
Deck Width167.0 ft (50.9 m)
Deck Area4250.1 sq m
Main Spans4
Year Built1981 (reconstructed 2004)

Traffic

Avg Daily Traffic120,000 (2022)
Truck Traffic16%
Lanes On Bridge10
Lanes Under Bridge8

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000810384

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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