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I-81 Sbl over Route 666

Wythe County, Virginia · rated Fair in the 2025 National Bridge Inventory

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

I-81 Sbl over Route 666 in Wythe County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1963 and reconstructed in 1993, making it 62 years old at the 2025 inventory.
It carries about 15,438 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 144 of the 181 inventoried bridges in Wythe County rated fair (79.6%); 9 (5.0%) 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 Virginia department of transportation.

Bridge	Built	Vehicles/day	Condition
Interstate 81 over Stream	1967	54,515	Fair
Route 0081 over N&sbl & FO44 over Stream	1967	54,515	Fair
I-81 Nbl over Reed Creek	1985	29,109	Good
I-81 Nbl over NS Railway	1986	29,109	Fair
I-81 Sbl over NS Railway	1986	28,471	Fair
Sbl Route 0081 over Reed Creek	1986	28,471	Fair