US Bridges

SE 11th Avenue over D Line Canal

Fair

Payette County, Idaho · 10.5S 3.4E New Plymouth · Structure no. 000000000028330

Built
1965
60 years old, rebuilt 1989
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

SE 11th Avenue over D Line Canal is a steel stringer/multi-beam or girder carrying SE 11th Avenue over D Line Canal in Payette County, Idaho. It was built in 1965 and reconstructed in 1989, so it is 60 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 5% of them trucks, projected to reach 75 by 2039. The structure is 32 ft (9.8 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesSE 11th Avenue
CrossesD Line Canal
Location10.5S 3.4E New Plymouth
RouteCounty Highway 0
CountyPayette County
StateIdaho
Coordinates43.82172, -116.75364
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87 US tons
Inventory rating61 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 10
Structure length32 ft (9.8 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$368,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 11th Avenue over D Line Canal built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1989.

What condition is SE 11th Avenue over D 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 October 2023.

How much traffic does SE 11th Avenue over D Line Canal carry?

About 50 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SE 11th Avenue over D Line Canal?

The structure is 32 ft (9.8 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns SE 11th Avenue over D Line Canal?

It is owned by the County Highway Agency.