Structure 514 · Allegheny County, PA

SR 0019 NB SB over SR 3004 Mcmurray RD

Carries SR 0019 NB SB over SR 3004 Mcmurray RD, Over SR 3004.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT77 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

77 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.

Built1940rebuilt 1997
Length77.1 ft23.5 m
Daily traffic30,066counted 2024
Last inspectedNovember 2022every 48 months

Location

StatePennsylvania
CountyAllegheny
LocationOver SR 3004
CarriesSR 0019 NB SB
CrossesSR 3004 Mcmurray RD
Coordinates40.33184, -80.06985

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length77.1 ft (23.5 m)
Max Span71.9 ft (21.9 m)
Deck Width57.4 ft (17.5 m)
Deck Area411.2 sq m
Main Spans1
Year Built1940 (reconstructed 1997)

Traffic

Avg Daily Traffic30,066 (2024)
Truck Traffic2%
Lanes On Bridge4
Lanes Under Bridge3

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000000514

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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