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Tr 00th6 over Th No 6 over I 89

Chittenden County, Vermont · rated Good in the 2025 National Bridge Inventory

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

Tr 00th6 over Th No 6 over I 89 in Chittenden County, Vermont, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1967, making it 58 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2019).
Its listed owner is the state highway agency.
It is one of 90 of the 184 inventoried bridges in Chittenden County rated good (48.9%); 4 (2.2%) 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


Structure	Continuous steel stringer or multi-beam girder
Length	about 226 ft
Location	3.1 Mi N Exit 17
NBI structure number	2004100D8004101
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 00089 Ml over Winooski River	1962	56,400	Good
I 00089 Ml over Winooski River	1962	56,400	Good
I 00089 Ml over I 89 over Necrr	1962	56,400	Good
I 00089 Ml over I 89 over Necrr	1962	56,400	Good
I 00089 Ml over I 89 over Vt 15	1962	56,400	Fair
I 00089 Ml over I 89 over Vt 15	1962	56,400	Fair