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Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR

Lehigh County, Pennsylvania · rated Good in the 2025 National Bridge Inventory

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

Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR in Lehigh County, Pennsylvania, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1989, making it 36 years old at the 2025 inventory.
It carries about 12,801 vehicles a day (traffic count year 2024).
Its listed owner is a city or municipal highway agency.
It is one of 113 of the 378 inventoried bridges in Lehigh County rated good (29.9%); 41 (10.8%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 287 ft
Location	Susquehanna St. Bridge
NBI structure number	000000000023109
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-78(LR 1045) over Pa 100(LR 672)	1958	126,705	Fair
I 78(LR 1045) over Norfolk/southern RR	1988	126,705	Fair
I-78 (lr 1045) over SR 3009 (ruppsville Rd)	1988	126,705	Good
US 22(LR 771) over T-638(irving St.)	1952	92,608	Good
US 22 (lr 771) over Lehigh River	2017	92,608	Good
US 22 (lr 771) over Leh. Canal SR 1007 NSR	2017	92,608	Good