Structure 41557 · Allegheny County, PA

Perry Hy over SR 910

Carries Perry Hy over SR 910, SR 19 Over SR 910.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT146 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

146 ft end to end: about 2 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.

Built200224 years old
Length146.0 ft44.5 m
Daily traffic27,155counted 2024
Last inspectedNovember 2022every 24 months

Location

StatePennsylvania
CountyAllegheny
LocationSR 19 Over SR 910
CarriesPerry Hy
CrossesSR 910
Coordinates40.62667, -80.05667

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length146.0 ft (44.5 m)
Max Span146.0 ft (44.5 m)
Deck Width61.0 ft (18.6 m)
Deck Area827.7 sq m
Main Spans1
Year Built2002

Traffic

Avg Daily Traffic27,155 (2024)
Truck Traffic2%
Lanes On Bridge4
Lanes Under Bridge3

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000041557

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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