US Bridges

STC3928;S Eagle RD over New York Canal

Good

Ada County, Idaho · 0.3 S. 3.3 E. Kuna · Structure no. 000000000026261

Built
1997
28 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
148 ft
3 main spans
Daily traffic
570
2023 count
Owner
County
County Highway Agency

About this bridge

STC3928;S Eagle RD over New York Canal is a prestressed concrete box beam or girders - multiple carrying STC3928;S Eagle RD over New York Canal in Ada County, Idaho. It was built in 1997, so it is 28 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 570 vehicles a day, roughly 6% of them trucks, projected to reach 855 by 2042. The structure is 148 ft (45.1 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSTC3928;S Eagle RD
CrossesNew York Canal
Location0.3 S. 3.3 E. Kuna
RouteCounty Highway 3928
StateIdaho
Coordinates43.48583, -116.35456
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating89 US tons
Inventory rating52 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length148 ft (45.1 m)
Longest span41 ft (12.5 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic570 (2023)
Projected traffic855 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 STC3928;S Eagle RD over New York Canal built?

It was built in 1997, making it 28 years old in 2025.

What condition is STC3928;S Eagle RD over New York 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 October 2023.

How much traffic does STC3928;S Eagle RD over New York Canal carry?

About 570 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is STC3928;S Eagle RD over New York Canal?

The structure is 148 ft (45.1 m) long with a longest span of 41 ft (12.5 m) and a deck 43 ft wide.

Who owns STC3928;S Eagle RD over New York Canal?

It is owned by the County Highway Agency.