US Bridges

Hartley Lane over Farmers Union Canal

Good

Ada County, Idaho · E of SH16;N of Beacon Lgt · Structure no. 000000000033435

Built
2003
22 years old
Condition
Good
inspected March 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
120
2023 count
Owner
County
County Highway Agency

About this bridge

Hartley Lane over Farmers Union Canal is a steel stringer/multi-beam or girder carrying Hartley Lane over Farmers Union Canal in Ada County, Idaho. It was built in 2003, so it is 22 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 120 vehicles a day, roughly 10% of them trucks, projected to reach 180 by 2039. The structure is 25 ft (7.5 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesHartley Lane
CrossesFarmers Union Canal
LocationE of SH16;N of Beacon Lgt
RouteCounty Highway 0
StateIdaho
Coordinates43.73313, -116.43817
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating52 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length25 ft (7.5 m)
Longest span23 ft (6.9 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2023)
Projected traffic180 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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 Hartley Lane over Farmers Union Canal built?

It was built in 2003, making it 22 years old in 2025.

What condition is Hartley Lane 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 March 2021.

How much traffic does Hartley Lane over Farmers Union Canal carry?

About 120 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Hartley Lane over Farmers Union Canal?

The structure is 25 ft (7.5 m) long with a longest span of 23 ft (6.9 m) and a deck 24 ft wide.

Who owns Hartley Lane over Farmers Union Canal?

It is owned by the County Highway Agency.