Structure 38951 · Philadelphia County, PA

Ridge Avenue over Wissahickon Creek

Carries Ridge Avenue over Wissahickon Creek, Gustine Lake Inter3479g08.

Overall conditionPoor

Set by its lowest-rated component: Superstructure and Substructure at 4 of 9.

How ratings work
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT98 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 4/9Substructure 4/9

98 ft end to end, longest span 30 ft. 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 deck arch.

Built1888138 years old
Length98.1 ft29.9 m
Daily traffic15,917counted 2023
Last inspectedMarch 2024every 24 months

Location

StatePennsylvania
CountyPhiladelphia
LocationGustine Lake Inter3479g08
CarriesRidge Avenue
CrossesWissahickon Creek
Coordinates40.01488, -75.20665

Physical Characteristics

MaterialMasonry
DesignArch - Deck
Total Length98.1 ft (29.9 m)
Max Span29.9 ft (9.1 m)
Deck Width65.0 ft (19.8 m)
Deck Area592.0 sq m
Main Spans3
Year Built1888

Traffic

Avg Daily Traffic15,917 (2023)
Truck Traffic7%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical3 — Scour critical
Structure Number000000000038951

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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