Structure 630083 · Durham County, NC

Us15 Us501s over Sr1308

Carries Us15 Us501s over Sr1308, 0.2mi.n.jct.sr1303.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT166 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

166 ft end to end, longest span 90 ft: about 2 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.

Built197155 years old
Length165.7 ft50.5 m
Daily traffic51,000counted 2020
Last inspectedJune 2023every 24 months

Location

StateNorth Carolina
CountyDurham
Location0.2mi.n.jct.sr1303
CarriesUs15 Us501s
CrossesSr1308
Coordinates35.98385, -78.95809

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length165.7 ft (50.5 m)
Max Span89.9 ft (27.4 m)
Deck Width42.3 ft (12.9 m)
Deck Area651.5 sq m
Main Spans3
Year Built1971

Traffic

Avg Daily Traffic51,000 (2020)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge3

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 Number000000000630083

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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