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Hot Metal Street over CSX Railroad Tunnel

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

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

Hot Metal Street over CSX Railroad Tunnel 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 2000, making it 25 years old at the 2025 inventory.
It carries about 17,500 vehicles a day (traffic count year 2006).
Its listed owner is a city or municipal 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.
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


Structure	Prestressed concrete multiple box beam
Length	about 73 ft
Location	147 Hot Metal St Bridge
NBI structure number	000000000040788
Condition class	Fair

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