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C3726 over Great Brook

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

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

C3726 over Great Brook in Windsor County, Vermont, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1937, making it 88 years old at the 2025 inventory.
It carries about 300 vehicles a day (traffic count year 2019).
Its listed owner is a town or township highway agency.
It is one of 241 of the 483 inventoried bridges in Windsor County rated fair (49.9%); 26 (5.4%) 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


Structure	Steel stringer or multi-beam girder
Length	about 33 ft
Location	0.01 Mi to Jct W CL2 TH6
NBI structure number	101418004814181
Condition class	Fair

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 Th No 78	1965	42,000	Good
I 00091 Ml over I 91 over US 5	2015	31,000	Good
I 00091 Ml over I 91 over US 5	2015	31,000	Good
I 00089 Ml over I 89 over Th No 46	1967	26,000	Good
I 00089 Ml over I 89 over US 5	1966	26,000	Fair
I 00089 Ml over I 89 over US 5	1966	26,000	Fair