Structure 763 · Allegheny County, PA

Cross ST over Saw Mill Run

Carries Cross ST over Saw Mill Run, West End Circle.

Overall conditionFair

Set by its lowest-rated component: Culvert at 5 of 9.

How ratings work
Culvertsets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT35 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 5/9

A culvert 35 ft across. 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, so those are drawn as typical for a culvert.

Built192997 years old
Length35.1 ft10.7 m
Daily traffic23,221counted 2024
Last inspectedJune 2024every 24 months

Location

StatePennsylvania
CountyAllegheny
LocationWest End Circle
CarriesCross ST
CrossesSaw Mill Run
Coordinates40.44500, -80.03000

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length35.1 ft (10.7 m)
Max Span35.1 ft (10.7 m)
Deck Width48.6 ft (14.8 m)
Deck Area158.4 sq m
Main Spans1
Year Built1929

Traffic

Avg Daily Traffic23,221 (2024)
Truck Traffic8%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000000763

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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