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SR 20 E Main St over over Twenty Mile Creek

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

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

SR 20 E Main St over over Twenty Mile Creek 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 substructure, rated 1 (imminent failure condition) on the 0-9 scale.
It was built in 1973 and reconstructed in 1976, making it 52 years old at the 2025 inventory.
It carries about 2,785 vehicles a day (traffic count year 2024).
Its listed owner is the state 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	Prestressed concrete stringer or multi-beam girder
Length	about 375 ft
Location	North East Township
NBI structure number	000000000015936
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