Structure 670135 · Forsyth County, NC

Sr1109 over I40

Carries Sr1109 over I40, 0.1 Mi. N. Jct. Sr1141.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT366 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

366 ft end to end, longest span 74 ft: about 5 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.

Built195967 years old
Length365.8 ft111.5 m
Daily traffic8,100counted 2019
Last inspectedDecember 2023every 24 months

Location

StateNorth Carolina
CountyForsyth
Location0.1 Mi. N. Jct. Sr1141
CarriesSr1109
CrossesI40
Coordinates36.04139, -80.37554

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length365.8 ft (111.5 m)
Max Span73.8 ft (22.5 m)
Deck Width28.2 ft (8.6 m)
Deck Area958.9 sq m
Main Spans5
Year Built1959

Traffic

Avg Daily Traffic8,100 (2019)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000670135

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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