Structure 2449 · Allegheny County, PA

Shaler ST over Saw Mill Run Creek

Carries Shaler ST over Saw Mill Run Creek, 097 Shaler ST Bridge.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT58 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

58 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 girder bridge.

Built1900126 years old
Length58.1 ft17.7 m
Daily traffic1,350counted 2023
Last inspectedOctober 2023every 24 months

Location

StatePennsylvania
CountyAllegheny
Location097 Shaler ST Bridge
CarriesShaler ST
CrossesSaw Mill Run Creek
Coordinates40.43271, -80.02990

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length58.1 ft (17.7 m)
Max Span49.9 ft (15.2 m)
Deck Width39.4 ft (12 m)
Deck Area212.4 sq m
Main Spans1
Year Built1900

Traffic

Avg Daily Traffic1,350 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000002449

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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