Structure 2912 · Allegheny County, PA

Ramp A over I-376 WB Underpass

Carries Ramp A over I-376 WB Underpass, At Int W/ Grant Street.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT38 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

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 rigid-frame bridge.

Built195868 years old
Length38.1 ft11.6 m
Daily traffic19,488counted 2024
Last inspectedMay 2023every 24 months

Location

StatePennsylvania
CountyAllegheny
LocationAt Int W/ Grant Street
CarriesRamp A
CrossesI-376 WB Underpass
Coordinates40.43333, -79.98333

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length38.1 ft (11.6 m)
Max Span34.1 ft (10.4 m)
Deck Width259.8 ft (79.2 m)
Deck Area918.7 sq m
Main Spans1
Year Built1958

Traffic

Avg Daily Traffic19,488 (2024)
Truck Traffic6%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000002912

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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