Structure 970599 · Iredell County, NC

I-40 Rampto I-77SB over I-40

Carries I-40 Rampto I-77SB over I-40, 0.79 Mi. N Mocksville RD.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructure9/9 · Excellent
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,289 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9 · sets the ratingSuperstructure 8/9 · sets the ratingSubstructure 9/9

2,289 ft end to end, longest span 136 ft: about 6.4 football fields. 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.

Built20233 years old
Length2288.7 ft697.6 m
Daily traffic28,560counted 2018
Last inspectedJune 2023every 24 months

Location

StateNorth Carolina
CountyIredell
Location0.79 Mi. N Mocksville RD
CarriesI-40 Rampto I-77SB
CrossesI-40
Coordinates35.80900, -80.86300

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length2288.7 ft (697.6 m)
Max Span135.8 ft (41.4 m)
Deck Width42.0 ft (12.8 m)
Deck Area8929.3 sq m
Main Spans17
Year Built2023

Traffic

Avg Daily Traffic28,560 (2018)
Truck Traffic16%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000970599

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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