Structure 810859 · Guilford County, NC

I74wbl Us311nbl over I85bus Us29 Us70 Coll

Carries I74wbl Us311nbl over I85bus Us29 Us70 Coll, 1.5 Mi. S. Jct. Sr1113.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT519 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

519 ft end to end, longest span 147 ft: about 7 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.

Built200521 years old
Length518.7 ft158.1 m
Daily traffic10,750counted 2020
Last inspectedOctober 2023every 24 months

Location

StateNorth Carolina
CountyGuilford
Location1.5 Mi. S. Jct. Sr1113
CarriesI74wbl Us311nbl
CrossesI85bus Us29 Us70 Coll
Coordinates35.94559, -79.97218

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length518.7 ft (158.1 m)
Max Span147.0 ft (44.8 m)
Deck Width41.0 ft (12.5 m)
Deck Area1976.2 sq m
Main Spans4
Year Built2005

Traffic

Avg Daily Traffic10,750 (2020)
Truck Traffic16%
Lanes On Bridge2
Lanes Under Bridge7

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000810859

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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