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SH 16 over Black Canyon Canal

Gem County, Idaho · rated Fair in the 2025 National Bridge Inventory

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

SH 16 over Black Canyon Canal in Gem County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1966, making it 59 years old at the 2025 inventory.
It carries about 12,000 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 40 of the 57 inventoried bridges in Gem County rated fair (70.2%); 3 (5.3%) 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	Concrete stringer or multi-beam girder
Length	about 86 ft
Location	1.8 S. Emmett
NBI structure number	000000000012160
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
SH 52 over Farmers Coop Canal	1992	11,500	Good
SH 52 over Payette River;emmett Br.	1971	10,500	Fair
SH 52 over Farmers Coop Canal	2001	7,000	Good
SMA7190;SUBSTATION over Last Chance Canal	2016	6,800	Good
SH 52 over Drain Ditch	1988	3,500	Fair
SH 52 over Noble Canal	1990	3,000	Fair