US Bridges

SMA7017;FL.FEATHER over Farmers Union Canal

Good

Ada County, Idaho · 0.7 N. 1.0 E. Eagle · Structure no. 000000000026375

Built
1984
41 years old, rebuilt 1997
Condition
Good
inspected November 2024
Type
Frame
Concrete
Length
30 ft
1 main span
Daily traffic
5,900
2023 count
Owner
County
County Highway Agency

About this bridge

SMA7017;FL.FEATHER over Farmers Union Canal is a concrete frame carrying SMA7017;FL.FEATHER over Farmers Union Canal in Ada County, Idaho. It was built in 1984 and reconstructed in 1997, so it is 41 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,900 vehicles a day, roughly 2% of them trucks, projected to reach 8,850 by 2042. The structure is 30 ft (9.1 m) long and 61 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSMA7017;FL.FEATHER
CrossesFarmers Union Canal
Location0.7 N. 1.0 E. Eagle
RouteCounty Highway 7017
CountyAda County
StateIdaho
Coordinates43.70648, -116.33387
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width61 ft (18.7 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2023)
Projected traffic8,850 by 2042
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SMA7017;FL.FEATHER over Farmers Union Canal built?

It was built in 1984, making it 41 years old in 2025. It was reconstructed in 1997.

What condition is SMA7017;FL.FEATHER over Farmers Union Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does SMA7017;FL.FEATHER over Farmers Union Canal carry?

About 5,900 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is SMA7017;FL.FEATHER over Farmers Union Canal?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 61 ft wide.

Who owns SMA7017;FL.FEATHER over Farmers Union Canal?

It is owned by the County Highway Agency.