Structure 630228 · Durham County, NC

Sr1959 over I40

Carries Sr1959 over I40, 0.3 Mi. S. Jct. Sr2058.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT279 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 6/9

279 ft end to end, longest span 84 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.

Built196957 years old
Length278.9 ft85 m
Daily traffic16,500counted 2021
Last inspectedAugust 2023every 24 months

Location

StateNorth Carolina
CountyDurham
Location0.3 Mi. S. Jct. Sr2058
CarriesSr1959
CrossesI40
Coordinates35.89064, -78.84866

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length278.9 ft (85 m)
Max Span84.0 ft (25.6 m)
Deck Width98.8 ft (30.1 m)
Deck Area2558.5 sq m
Main Spans4
Year Built1969

Traffic

Avg Daily Traffic16,500 (2021)
Truck Traffic12%
Lanes On Bridge7
Lanes Under Bridge10

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 Number000000000630228

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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