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RAMP G to FT. DUQ over Alleg.riv. Ft Duq Warf

Allegheny County, Pennsylvania · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

RAMP G to FT. DUQ over Alleg.riv. Ft Duq Warf in Allegheny County, Pennsylvania, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1968 and reconstructed in 2010, making it 57 years old at the 2025 inventory.
It carries about 2,709 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 788 of the 1,296 inventoried bridges in Allegheny County rated fair (60.8%); 120 (9.3%) are rated poor.
Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
Its condition class and component ratings are unchanged from the 2024 inventory.
Its most recent inspection on record is dated February 2023, on a 24-month routine inspection cycle.
It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings

Component	Rating (2024)	Rating (2025)	FHWA scale meaning
Deck	5	5	Fair condition
Superstructure	6	6	Satisfactory condition
Substructure	6	6	Satisfactory condition


Structure	Steel stringer or multi-beam girder
Length	about 1,008 ft
Location	Fort Duquesne Bridge
NBI structure number	000000000002821
Condition class	Fair
Traffic status (item 41)	Open, no restriction
Last inspection (item 90)	February 2023
Inspection interval (item 91)	24 months
Scour (item 113)	8: foundations stable, scour above the top of the footing
Fracture critical (item 92A)	Yes

Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.

Bridge	Built	Vehicles/day	Condition
Penn Linc Pw over Buswy Arch Bell Poc RR	1952	99,372	Fair
Penn Linc Pw over SR50 Wle RR Chartiers Ck	1950	99,372	Fair
Penn Lincoln Py over Campbells Run	1972	96,254	Fair
Parkway West over Campbells Run Road	1973	96,254	Good
SR 0279 NB SB over Suffolk St.	1987	88,452	Fair
Penn Lincoln Pw over Whiskey Run Bell Rd	1953	87,163	Fair