US Bridges

500 South Road over A-5 Canal

Good

Minidoka County, Idaho · 0.7 S. 3.6 E. Heyburn · Structure no. 000000000025221

Built
2020
5 years old
Condition
Good
inspected April 2022
Type
Frame
Concrete
Length
36 ft
1 main span
Daily traffic
1,200
2023 count
Owner
County
County Highway Agency

About this bridge

500 South Road over A-5 Canal is a concrete frame carrying 500 South Road over A-5 Canal in Minidoka County, Idaho. It was built in 2020, so it is 5 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 1,200 vehicles a day, roughly 3% of them trucks, projected to reach 1,800 by 2042. The structure is 36 ft (11 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries500 South Road
CrossesA-5 Canal
Location0.7 S. 3.6 E. Heyburn
RouteCounty Highway 0
CountyMinidoka County
StateIdaho
Coordinates42.54708, -113.69242
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 protection7 GoodSome minor problems.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length36 ft (11 m)
Longest span33 ft (10 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2023)
Projected traffic1,800 by 2042
Trucks3%
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 500 South Road over A-5 Canal built?

It was built in 2020, making it 5 years old in 2025.

What condition is 500 South Road over A-5 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 April 2022.

How much traffic does 500 South Road over A-5 Canal carry?

About 1,200 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 500 South Road over A-5 Canal?

The structure is 36 ft (11 m) long with a longest span of 33 ft (10 m) and a deck 36 ft wide.

Who owns 500 South Road over A-5 Canal?

It is owned by the County Highway Agency.