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T-480 Old Rte 99 over Lamson Run Tributary

Erie County, Pennsylvania · rated Poor in the 2025 National Bridge Inventory

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

T-480 Old Rte 99 over Lamson Run Tributary in Erie County, Pennsylvania, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1913 and reconstructed in 1941, making it 112 years old at the 2025 inventory.
It carries about 695 vehicles a day (traffic count year 2013).
Its listed owner is a town or township highway agency.
It is one of 42 of the 444 inventoried bridges in Erie County rated poor (9.5%); 42 (9.5%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 24 ft
Location	at S. Hill Rd Intersect
NBI structure number	000000000016452
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
SR 90 Eb/wb over over Walnut Creek	1959	36,476	Fair
SR 90 Eb/wb over over Four Mile Creek	1959	35,843	Fair
SR 19 Peach St over over Walnut Creek	1950	31,986	Fair
SR 90 WB over over SR 0019 Peach St	1996	22,023	Good
SR 90 WB over over T-558 Old French Rd	1996	22,023	Good
SR 90 Eb/wb over over Twelvemile Creek	1959	21,995	Fair