US Bridges

Lake Shore over Ridenbaugh Canal

Good

Canyon County, Idaho · 4.7S 0.4W Nampa City Ctr · Structure no. 000000000026906

Built
2005
20 years old
Condition
Good
inspected March 2023
Type
Frame
Concrete
Length
29 ft
1 main span
Daily traffic
500
2023 count
Owner
Local
Other Local Agency

About this bridge

Lake Shore over Ridenbaugh Canal is a concrete frame carrying Lake Shore over Ridenbaugh Canal in Canyon County, Idaho. It was built in 2005, so it is 20 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 500 vehicles a day, roughly 10% of them trucks, projected to reach 750 by 2039. The structure is 29 ft (8.8 m) long and 62 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesLake Shore
CrossesRidenbaugh Canal
Location4.7S 0.4W Nampa City Ctr
RouteCounty Highway 0
StateIdaho
Coordinates43.51011, -116.56719
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.9 US tons
Inventory rating93 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length29 ft (8.8 m)
Longest span29 ft (8.7 m)
Deck width62 ft (18.8 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic750 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local 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 Lake Shore over Ridenbaugh Canal built?

It was built in 2005, making it 20 years old in 2025.

What condition is Lake Shore over Ridenbaugh 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 2023.

How much traffic does Lake Shore over Ridenbaugh Canal carry?

About 500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Lake Shore over Ridenbaugh Canal?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.7 m) and a deck 62 ft wide.

Who owns Lake Shore over Ridenbaugh Canal?

It is owned by the Other Local Agency.