US Bridges

Arndt Road over Pudding River Overflow

Fair

Clackamas County, Oregon · .001 MI W of Knights RD · Structure no. 06080A000000000

Built
1985
40 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
106 ft
3 main spans
Daily traffic
14,416
2020 count
Owner
County
County Highway Agency

About this bridge

Arndt Road over Pudding River Overflow is a concrete continuous slab carrying Arndt Road over Pudding River Overflow in Clackamas County, Oregon. It was built in 1985, so it is 40 years old, younger than the Oregon average of 49.9 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 14,416 vehicles a day, roughly 12% of them trucks, projected to reach 15,899 by 2025. The structure is 106 ft (32.3 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesArndt Road
CrossesPudding River Overflow
Location.001 MI W of Knights RD
RouteCounty Highway 0A616
CountyClackamas County
StateOregon
Coordinates45.26033, -122.73334
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment6: Equal to present minimum criteria
Operating rating50.7 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length106 ft (32.3 m)
Longest span45 ft (13.7 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,416 (2020)
Projected traffic15,899 by 2025
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Arndt Road over Pudding River Overflow built?

It was built in 1985, making it 40 years old in 2025.

What condition is Arndt Road over Pudding River Overflow 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 May 2023.

How much traffic does Arndt Road over Pudding River Overflow carry?

About 14,416 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is Arndt Road over Pudding River Overflow?

The structure is 106 ft (32.3 m) long with a longest span of 45 ft (13.7 m) and a deck 44 ft wide.

Who owns Arndt Road over Pudding River Overflow?

It is owned by the County Highway Agency.