Structure 970154 · Iredell County, NC

Sr2321 over I77 & Salisbury Creek

Carries Sr2321 over I77 & Salisbury Creek, 1.1 Mi. E. Jct. Us70.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT309 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

309 ft end to end, longest span 122 ft: about 4 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.

Built20224 years old
Length308.7 ft94.1 m
Daily traffic13,000counted 2021
Last inspectedAugust 2024every 24 months

Location

StateNorth Carolina
CountyIredell
Location1.1 Mi. E. Jct. Us70
CarriesSr2321
CrossesI77 & Salisbury Creek
Coordinates35.79118, -80.86246

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length308.7 ft (94.1 m)
Max Span121.7 ft (37.1 m)
Deck Width105.3 ft (32.1 m)
Deck Area3020.6 sq m
Main Spans3
Year Built2022

Traffic

Avg Daily Traffic13,000 (2021)
Truck Traffic6%
Lanes On Bridge5
Lanes Under Bridge6

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000970154

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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