Structure 39109 · Philadelphia County, PA

17th Street over Abolished Conrail

Carries 17th Street over Abolished Conrail, 28f11.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT82 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

82 ft end to end. Lengths and the car 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.

Built1898rebuilt 1970
Length82.0 ft25 m
Daily traffic2,100counted 1980
Last inspectedJanuary 2023every 24 months

Location

StatePennsylvania
CountyPhiladelphia
Location28f11
Carries17th Street
CrossesAbolished Conrail
Coordinates39.96094, -75.16668

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length82.0 ft (25 m)
Max Span63.0 ft (19.2 m)
Deck Width49.5 ft (15.1 m)
Deck Area377.5 sq m
Main Spans1
Year Built1898 (reconstructed 1970)

Traffic

Avg Daily Traffic2,100 (1980)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000039109

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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