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3900 North Rd over Low Line Canal

Twin Falls County, Idaho · rated Good in the 2025 National Bridge Inventory

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

3900 North Rd over Low Line Canal in Twin Falls County, Idaho, 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 1965, making it 60 years old at the 2025 inventory.
It carries about 80 vehicles a day (traffic count year 2023).
It is one of 14 of the 126 inventoried bridges in Twin Falls County rated good (11.1%); 5 (4.0%) 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	Concrete stringer or multi-beam girder
Length	about 34 ft
Location	2.4 S. 0.4 E. Buhl
NBI structure number	000000000025420
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US 93 over Perrine Coulee;bike Path	2006	33,000	Fair
US 93 over Snake River; Perrine Br.	1976	31,500	Fair
SH 74 over Rock Creek	1993	19,000	Good
US 30 over Perrine Coulee Canal	1960	15,500	Fair
US 93 over Rock Creek	2011	15,000	Fair
STC7232;BLUE Lakes over Rock Creek	1959	11,500	Poor