Structure 2821 · Allegheny County, PA

Ramp G To Ft. Duq over Alleg.riv. Ft Duq Warf

Carries Ramp G To Ft. Duq over Alleg.riv. Ft Duq Warf, Fort Duquesne Bridge.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,009 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

1,009 ft end to end, longest span 125 ft: about 2.8 football fields. Lengths and the semi-truck 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.

Built1968rebuilt 2010
Length1008.9 ft307.5 m
Daily traffic2,709counted 2024
Last inspectedFebruary 2023every 24 months

Location

StatePennsylvania
CountyAllegheny
LocationFort Duquesne Bridge
CarriesRamp G To Ft. Duq
CrossesAlleg.riv. Ft Duq Warf
Coordinates40.44313, -80.00845

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1008.9 ft (307.5 m)
Max Span125.0 ft (38.1 m)
Deck Width24.6 ft (7.5 m)
Deck Area2306.2 sq m
Main Spans8
Year Built1968 (reconstructed 2010)

Traffic

Avg Daily Traffic2,709 (2024)
Truck Traffic7%
Lanes On Bridge1

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000002821

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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