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C3090 over Thayer Brook

Orange County, Vermont · rated Fair in the 2025 National Bridge Inventory

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

C3090 over Thayer Brook in Orange County, Vermont, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1928, making it 97 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2019).
Its listed owner is a town or township highway agency.
It is one of 106 of the 209 inventoried bridges in Orange County rated fair (50.7%); 4 (1.9%) 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

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

Bridge	Built	Vehicles/day	Condition
I 00089 Ml over I 89 over Vt 64	1970	20,400	Fair
I 00089 Ml over I 89 over Vt 64	1970	20,400	Fair
I 00089 Ml over I 89 over Th No 6	1968	16,700	Good
I 00089 Ml over I 89 over Th No 1	1970	16,700	Poor
I 00089 Ml over I 89 over Th No 1	1970	16,700	Fair
I 00091 Ml over I 91 over Th No 14	1971	10,200	Good