Home › Idaho › Butte County › Adams Boulevard over Adams Drainage

Adams Boulevard over Adams Drainage

Butte County, Idaho · rated Poor in the 2025 National Bridge Inventory

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

Adams Boulevard over Adams Drainage in Butte County, Idaho, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1993, making it 32 years old at the 2025 inventory.
It carries about 491 vehicles a day (traffic count year 2021).
It is one of 1 of the 32 inventoried bridges in Butte County rated poor (3.1%); 1 (3.1%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

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

Bridge	Built	Vehicles/day	Condition
US 20 over Inl Central Connector	1993	4,400	Fair
US 20 over Big Lost River	1977	2,700	Good
US 93 over Arco Canal	1962	2,600	Good
US 93 over Spring Creek	1962	2,600	Good
US 93 over Big Lost River	1962	2,600	Fair
US 93 over Big Lost River	1958	2,300	Fair