Structure 970026 · Iredell County, NC

Nc150 over I77

Carries Nc150 over I77, 0.4 Mi. E. Jct. Sr1474.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT241 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

241 ft end to end, longest span 65 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.

Built1966rebuilt 2012
Length240.8 ft73.4 m
Daily traffic35,500counted 2021
Last inspectedJanuary 2024every 24 months

Location

StateNorth Carolina
CountyIredell
Location0.4 Mi. E. Jct. Sr1474
CarriesNc150
CrossesI77
Coordinates35.59393, -80.85982

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length240.8 ft (73.4 m)
Max Span65.0 ft (19.8 m)
Deck Width75.8 ft (23.1 m)
Deck Area1695.5 sq m
Main Spans4
Year Built1966 (reconstructed 2012)

Traffic

Avg Daily Traffic35,500 (2021)
Truck Traffic12%
Lanes On Bridge6
Lanes Under Bridge5

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000970026

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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