US Bridges

Rim Road over Deer Flat High Line

Good

Canyon County, Idaho · 4.0 S 3.6 W Nampa City Cn · Structure no. 000000000027556

Built
2013
12 years old
Condition
Good
inspected March 2023
Type
Frame
Concrete
Length
25 ft
1 main span
Daily traffic
120
2023 count
Owner
Local
Other Local Agency

About this bridge

Rim Road over Deer Flat High Line is a concrete frame carrying Rim Road over Deer Flat High Line in Canyon County, Idaho. It was built in 2013, so it is 12 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 20% of them trucks, projected to reach 180 by 2042. The structure is 25 ft (7.6 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRim Road
CrossesDeer Flat High Line
Location4.0 S 3.6 W Nampa City Cn
RouteCounty Highway 0
StateIdaho
Coordinates43.52136, -116.63308
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.9 US tons
Inventory rating77.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width50 ft (15.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2023)
Projected traffic180 by 2042
Trucks20%
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

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 Rim Road over Deer Flat High Line built?

It was built in 2013, making it 12 years old in 2025.

What condition is Rim Road over Deer Flat High Line 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 Rim Road over Deer Flat High Line carry?

About 120 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is Rim Road over Deer Flat High Line?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 50 ft wide.

Who owns Rim Road over Deer Flat High Line?

It is owned by the Other Local Agency.