Structure 970118 · Iredell County, NC

Sr1639 over I40

Carries Sr1639 over I40, 300ft. N. Jct. Sr1621.

Overall conditionPoor

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT200 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

200 ft end to end, longest span 54 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.

Built1960rebuilt 1985
Length199.8 ft60.9 m
Daily traffic3,400counted 2021
Last inspectedApril 2024every 24 months

Location

StateNorth Carolina
CountyIredell
Location300ft. N. Jct. Sr1621
CarriesSr1639
CrossesI40
Coordinates35.79736, -80.92175

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length199.8 ft (60.9 m)
Max Span53.8 ft (16.4 m)
Deck Width35.8 ft (10.9 m)
Deck Area663.8 sq m
Main Spans4
Year Built1960 (reconstructed 1985)

Traffic

Avg Daily Traffic3,400 (2021)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge4

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 Number000000000970118

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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