US Bridges

Mayfield Road over Canyon Creek

Good

Elmore County, Idaho · 8.8N 0.5W Mountain Home · Structure no. 000000000027851

Built
2011
14 years old
Condition
Good
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
30
2023 count
Owner
Local
Other Local Agency

About this bridge

Mayfield Road over Canyon Creek is a prestressed concrete tee beam carrying Mayfield Road over Canyon Creek in Elmore County, Idaho. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 51 ft (15.5 m) long and 34 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesMayfield Road
CrossesCanyon Creek
Location8.8N 0.5W Mountain Home
RouteCounty Highway 0
StateIdaho
Coordinates43.26094, -115.70222
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating47 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length51 ft (15.5 m)
Longest span46 ft (14 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Mayfield Road over Canyon Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Mayfield Road over Canyon Creek 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 Mayfield Road over Canyon Creek carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Mayfield Road over Canyon Creek?

The structure is 51 ft (15.5 m) long with a longest span of 46 ft (14 m) and a deck 34 ft wide.

Who owns Mayfield Road over Canyon Creek?

It is owned by the Other Local Agency.