Structure 39119 · Philadelphia County, PA

Commerce Street over Penn Ctr Undergrnd Ramp

Carries Commerce Street over Penn Ctr Undergrnd Ramp, Btwn.18th & 19th 28e12.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

27 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 tee-beam bridge.

Built195769 years old
Length26.9 ft8.2 m
Daily traffic2,000counted 1985
Last inspectedFebruary 2023every 24 months

Location

StatePennsylvania
CountyPhiladelphia
LocationBtwn.18th & 19th 28e12
CarriesCommerce Street
CrossesPenn Ctr Undergrnd Ramp
Coordinates39.95470, -75.17130

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length26.9 ft (8.2 m)
Max Span26.9 ft (8.2 m)
Deck Width222.4 ft (67.8 m)
Deck Area556.0 sq m
Main Spans1
Year Built1957

Traffic

Avg Daily Traffic2,000 (1985)
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000039119

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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