US Bridges

S3792;UPPR Pleasnt over Deer Flat Low Line Canal

Fair

Canyon County, Idaho · 2.0 S. 4.8 E. Wilder · Structure no. 000000000026815

Built
1950
75 years old, rebuilt 1970
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
280
2023 count
Owner
Local
Other Local Agency

About this bridge

S3792;UPPR Pleasnt over Deer Flat Low Line Canal is a prestressed concrete tee beam carrying S3792;UPPR Pleasnt over Deer Flat Low Line Canal in Canyon County, Idaho. It was built in 1950 and reconstructed in 1970, so it is 75 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 6 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 280 vehicles a day, roughly 12% of them trucks, projected to reach 420 by 2042. The structure is 40 ft (12.2 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesS3792;UPPR Pleasnt
CrossesDeer Flat Low Line Canal
Location2.0 S. 4.8 E. Wilder
RouteCounty Highway 3792
CountyCanyon County
StateIdaho
Coordinates43.64756, -116.81656
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 alignment7: Better than present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic280 (2023)
Projected traffic420 by 2042
Trucks12%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S3792;UPPR Pleasnt over Deer Flat Low Line Canal built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1970.

What condition is S3792;UPPR Pleasnt over Deer Flat Low Line 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 November 2023.

How much traffic does S3792;UPPR Pleasnt over Deer Flat Low Line Canal carry?

About 280 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is S3792;UPPR Pleasnt over Deer Flat Low Line Canal?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 29 ft wide.

Who owns S3792;UPPR Pleasnt over Deer Flat Low Line Canal?

It is owned by the Other Local Agency.