Structure 1961 · Allegheny County, PA

Lowries Run Rd. over Lowries Run

Carries Lowries Run Rd. over Lowries Run, 200w.of Inter.w/sr 4011.

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
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT38 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

38 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 deck arch.

Built1914rebuilt 1958
Length38.1 ft11.6 m
Daily traffic12,322counted 2023
Last inspectedFebruary 2024every 24 months

Location

StatePennsylvania
CountyAllegheny
Location200w.of Inter.w/sr 4011
CarriesLowries Run Rd.
CrossesLowries Run
Coordinates40.53429, -80.05323

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length38.1 ft (11.6 m)
Max Span35.1 ft (10.7 m)
Deck Width36.4 ft (11.1 m)
Deck Area128.8 sq m
Main Spans1
Year Built1914 (reconstructed 1958)

Traffic

Avg Daily Traffic12,322 (2023)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000001961

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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