Structure 1750228 · Transylvania County, NC

Sr1580 over Williamson Creek

Carries Sr1580 over Williamson Creek, .2 Mi.e.jct.sr1596.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 5/9

32 ft end to end. Lengths and the car 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.

Built1972rebuilt 1974
Length31.8 ft9.7 m
Daily traffic200counted 1995
Last inspectedSeptember 2024every 24 months

Location

StateNorth Carolina
CountyTransylvania
Location.2 Mi.e.jct.sr1596
CarriesSr1580
CrossesWilliamson Creek
Coordinates35.22886, -82.69470

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length31.8 ft (9.7 m)
Max Span30.8 ft (9.4 m)
Deck Width22.0 ft (6.7 m)
Deck Area65.0 sq m
Main Spans1
Year Built1972 (reconstructed 1974)

Traffic

Avg Daily Traffic200 (1995)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000001750228

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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