US Bridges

1st Ave S. over Lower Payette Ditch

Fair

Payette County, Idaho · In PAYETTE;1st Ave South · Structure no. 000000000028335

Built
1967
58 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
200
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

1st Ave S. over Lower Payette Ditch is a prestressed concrete tee beam carrying 1st Ave S. over Lower Payette Ditch in Payette County, Idaho. It was built in 1967, so it is 58 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 200 vehicles a day, roughly 10% of them trucks, projected to reach 300 by 2039. The structure is 26 ft (7.9 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries1st Ave S.
CrossesLower Payette Ditch
LocationIn PAYETTE;1st Ave South
RouteCity Street 0
CountyPayette County
StateIdaho
Coordinates44.07378, -116.92128
Functional classUrban 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.
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 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, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 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 and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$479,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 1st Ave S. over Lower Payette Ditch built?

It was built in 1967, making it 58 years old in 2025.

What condition is 1st Ave S. over Lower Payette Ditch 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 1st Ave S. over Lower Payette Ditch carry?

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

How long is 1st Ave S. over Lower Payette Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 36 ft wide.

Who owns 1st Ave S. over Lower Payette Ditch?

It is owned by the City or Municipal Highway Agency.