US Bridges

SMA7217;S. Valley over Ami Trail

Good

Bannock County, Idaho · 0.3 W. of I15 Ic · Structure no. 000000000034525

Built
2016
9 years old
Condition
Good
inspected April 2022
Type
Frame
Concrete
Length
21 ft
1 main span
Daily traffic
5,200
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

SMA7217;S. Valley over Ami Trail is a concrete frame carrying SMA7217;S. Valley over Ami Trail in Bannock County, Idaho. It was built in 2016, so it is 9 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 5,200 vehicles a day, roughly 4% of them trucks, projected to reach 7,800 by 2042. The structure is 21 ft (6.4 m) long and 106 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSMA7217;S. Valley
CrossesAmi Trail
Location0.3 W. of I15 Ic
RouteCity Street 7217
CountyBannock County
StateIdaho
Coordinates42.83064, -112.40903
Functional classUrban Minor Arterial

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.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.6 US tons
Inventory rating60.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width106 ft (32.3 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,200 (2023)
Projected traffic7,800 by 2042
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesPedestrian / bicycle
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SMA7217;S. Valley over Ami Trail built?

It was built in 2016, making it 9 years old in 2025.

What condition is SMA7217;S. Valley over Ami Trail 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 April 2022.

How much traffic does SMA7217;S. Valley over Ami Trail carry?

About 5,200 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SMA7217;S. Valley over Ami Trail?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 106 ft wide.

Who owns SMA7217;S. Valley over Ami Trail?

It is owned by the City or Municipal Highway Agency.