Structure 810153 · Guilford County, NC

Sr1556 over I40 & Us421

Carries Sr1556 over I40 & Us421, 0.9 Mi. N. Jct. Nc68.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT199 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

199 ft end to end, longest span 104 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.

Built200323 years old
Length198.8 ft60.6 m
Daily traffic15,500counted 2021
Last inspectedApril 2024every 24 months

Location

StateNorth Carolina
CountyGuilford
Location0.9 Mi. N. Jct. Nc68
CarriesSr1556
CrossesI40 & Us421
Coordinates36.07505, -79.94237

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length198.8 ft (60.6 m)
Max Span103.7 ft (31.6 m)
Deck Width170.3 ft (51.9 m)
Deck Area3145.1 sq m
Main Spans2
Year Built2003

Traffic

Avg Daily Traffic15,500 (2021)
Truck Traffic6%
Lanes On Bridge4
Lanes Under Bridge11

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000810153

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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