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Rte 5S over Terwilleger Creek

Montgomery County, New York · rated Good in the 2025 National Bridge Inventory

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

Rte 5S over Terwilleger Creek in Montgomery County, New York, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 8 (very good condition) on the 0-9 scale.
It was built in 1957 and reconstructed in 2018, making it 68 years old at the 2025 inventory.
It carries about 2,421 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 72 of the 204 inventoried bridges in Montgomery County rated good (35.3%); 21 (10.3%) 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

Component	Rating (2025)	FHWA scale meaning
Superstructure	9	Excellent condition
Substructure	8	Very good condition


Structure	Prestressed concrete tee beam
Length	about 63 ft
Location	1.5 Mi E Jct Rts 5S & 160
NBI structure number	000000001002970
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Rte 90I over Thayer Road	1953	25,565	Fair
Rte I90 over Terwilleger Creek	1952	25,565	Fair
Rte I90 over CR 149	1953	25,565	Fair
Rte I90 over Rte 5S Old RR (bike/ped	1953	21,178	Fair
Rte I90 over S Chuctanunda Crk	1952	21,178	Fair
Rte I90 over Schoharie Creek	1988	21,178	Good