US Bridges

S3760;FLTG Feather over Middleton Canal

Fair

Ada County, Idaho · 1.0 N. Star · Structure no. 000000000025946

Built
1994
31 years old
Condition
Fair
inspected November 2024
Type
Frame
Concrete
Length
24 ft
1 main span
Daily traffic
3,600
2023 count
Owner
County
County Highway Agency

About this bridge

S3760;FLTG Feather over Middleton Canal is a concrete frame carrying S3760;FLTG Feather over Middleton Canal in Ada County, Idaho. It was built in 1994, so it is 31 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,600 vehicles a day, projected to reach 5,400 by 2042. The structure is 24 ft (7.3 m) long and 71 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesS3760;FLTG Feather
CrossesMiddleton Canal
Location1.0 N. Star
RouteCounty Highway 3760
CountyAda County
StateIdaho
Coordinates43.70657, -116.49334
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating38 US tons
Inventory rating23 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width71 ft (21.6 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2023)
Projected traffic5,400 by 2042
Trucks0%
Lanes on structure2
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 S3760;FLTG Feather over Middleton Canal built?

It was built in 1994, making it 31 years old in 2025.

What condition is S3760;FLTG Feather over Middleton Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does S3760;FLTG Feather over Middleton Canal carry?

About 3,600 vehicles per day (2023 count).

How long is S3760;FLTG Feather over Middleton Canal?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 71 ft wide.

Who owns S3760;FLTG Feather over Middleton Canal?

It is owned by the County Highway Agency.