Structure 2474 · Allegheny County, PA

Seventh Av over Pat Lrt Spur Line

Carries Seventh Av over Pat Lrt Spur Line, P50010 Pgh - 7th AVE.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

37 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.

Built1925rebuilt 1984
Length37.1 ft11.3 m
Daily traffic12,000counted 2024
Last inspectedApril 2024every 24 months

Location

StatePennsylvania
CountyAllegheny
LocationP50010 Pgh - 7th AVE
CarriesSeventh Av
CrossesPat Lrt Spur Line
Coordinates40.44192, -79.99429

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length37.1 ft (11.3 m)
Max Span32.2 ft (9.8 m)
Deck Width81.7 ft (24.9 m)
Deck Area281.4 sq m
Main Spans1
Year Built1925 (reconstructed 1984)

Traffic

Avg Daily Traffic12,000 (2024)
Truck Traffic5%
Lanes On Bridge5

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerOther Local Agencies
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000002474

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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