US Bridges

Co. Rd.;old US 93 over U Canal

Poor

Jerome County, Idaho · 12.5 N. Twin Falls · Structure no. 000000000024820

Built
1934
91 years old
Condition
Poor
inspected March 2024
Type
Tee Beam
Concrete
Length
152 ft
4 main spans
Daily traffic
5
2023 count
Owner
State
State Highway Agency

About this bridge

Co. Rd.;old US 93 over U Canal is a concrete tee beam carrying Co. Rd.;old US 93 over U Canal in Jerome County, Idaho. It was built in 1934, so it is 91 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 5 vehicles a day, roughly 10% of them trucks, projected to reach 8 by 2039. The structure is 152 ft (46.3 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCo. Rd.;old US 93
CrossesU Canal
Location12.5 N. Twin Falls
RouteCounty Highway 0
CountyJerome County
StateIdaho
Coordinates42.76978, -114.43375
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length152 ft (46.3 m)
Longest span37 ft (11.3 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2023)
Projected traffic8 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Co. Rd.;old US 93 over U Canal built?

It was built in 1934, making it 91 years old in 2025.

What condition is Co. Rd.;old US 93 over U 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 Co. Rd.;old US 93 over U Canal carry?

About 5 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Co. Rd.;old US 93 over U Canal?

The structure is 152 ft (46.3 m) long with a longest span of 37 ft (11.3 m) and a deck 28 ft wide.

Who owns Co. Rd.;old US 93 over U Canal?

It is owned by the State Highway Agency.