US Bridges

1100 South Road over C Canal

Poor

Jerome County, Idaho · 3.0 S. 1.3 E. Eden · Structure no. 000000000024705

Built
1975
50 years old
Condition
Poor
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
200
2023 count
Owner
Local
Other Local Agency

About this bridge

1100 South Road over C Canal is a prestressed concrete tee beam carrying 1100 South Road over C Canal in Jerome County, Idaho. It was built in 1975, so it is 50 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 200 vehicles a day, roughly 10% of them trucks, projected to reach 300 by 2039. The structure is 28 ft (8.5 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries1100 South Road
CrossesC Canal
Location3.0 S. 1.3 E. Eden
RouteCounty Highway 0
CountyJerome County
StateIdaho
Coordinates42.56189, -114.18378
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating56.5 US tons
Inventory rating44.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic300 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

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$332,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 1100 South Road over C Canal built?

It was built in 1975, making it 50 years old in 2025.

What condition is 1100 South Road over C Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does 1100 South Road over C Canal carry?

About 200 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 1100 South Road over C Canal?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 27 ft wide.

Who owns 1100 South Road over C Canal?

It is owned by the Other Local Agency.