Structure 630308 · Durham County, NC

I40e over Nc54

Carries I40e over Nc54, 0.2 Mi.e.jct.sr1118.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT288 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

288 ft end to end, longest span 158 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.

Built198640 years old
Length287.7 ft87.7 m
Daily traffic50,500counted 2020
Last inspectedAugust 2023every 24 months

Location

StateNorth Carolina
CountyDurham
Location0.2 Mi.e.jct.sr1118
CarriesI40e
CrossesNc54
Coordinates35.90936, -78.92997

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length287.7 ft (87.7 m)
Max Span157.8 ft (48.1 m)
Deck Width65.9 ft (20.1 m)
Deck Area1762.8 sq m
Main Spans3
Year Built1986

Traffic

Avg Daily Traffic50,500 (2020)
Truck Traffic16%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000630308

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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