Structure 630129 · Durham County, NC

Sr1317 over Us15byp Us501byp

Carries Sr1317 over Us15byp Us501byp, .7 Mi. N. Of Jct. SR 1320.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT229 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

229 ft end to end, longest span 86 ft: about 3 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.

Built199333 years old
Length229.0 ft69.8 m
Daily traffic10,000counted 2015
Last inspectedMarch 2023every 24 months

Location

StateNorth Carolina
CountyDurham
Location.7 Mi. N. Of Jct. SR 1320
CarriesSr1317
CrossesUs15byp Us501byp
Coordinates36.01178, -78.95521

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length229.0 ft (69.8 m)
Max Span86.0 ft (26.2 m)
Deck Width58.7 ft (17.9 m)
Deck Area1249.4 sq m
Main Spans4
Year Built1993

Traffic

Avg Daily Traffic10,000 (2015)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge7

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000630129

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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