US Bridges

100 East Road over A Canal

Fair

Minidoka County, Idaho · 0.3 N. 1.0 E. Rupert · Structure no. 000000000025230

Built
1968
57 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Prestressed Concrete
Length
58 ft
2 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

100 East Road over A Canal is a prestressed concrete tee beam carrying 100 East Road over A Canal in Minidoka County, Idaho. It was built in 1968, so it is 57 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2039. The structure is 58 ft (17.7 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries100 East Road
CrossesA Canal
Location0.3 N. 1.0 E. Rupert
RouteCounty Highway 0
CountyMinidoka County
StateIdaho
Coordinates42.62383, -113.64831
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length58 ft (17.7 m)
Longest span24 ft (7.3 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$569,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 100 East Road over A Canal built?

It was built in 1968, making it 57 years old in 2025.

What condition is 100 East Road over A Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does 100 East Road over A Canal carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 100 East Road over A Canal?

The structure is 58 ft (17.7 m) long with a longest span of 24 ft (7.3 m) and a deck 27 ft wide.

Who owns 100 East Road over A Canal?

It is owned by the County Highway Agency.