US Bridges

Or 99E (hwy 81) over Pudding River

Fair

Clackamas County, Oregon · 027 MI S Canby · Structure no. 02743 01E 02467

Built
1922
103 years old, rebuilt 1947
Condition
Fair
inspected August 2023
Type
Arch - Thru
Steel
Length
711 ft
1 main span
Daily traffic
15,402
2022 count
Owner
State
State Highway Agency

About this bridge

Or 99E (hwy 81) over Pudding River is a steel arch - thru carrying Or 99E (hwy 81) over Pudding River in Clackamas County, Oregon. It was built in 1922 and reconstructed in 1947, so it is 103 years old, older 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 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 15,402 vehicles a day, roughly 4% of them trucks, projected to reach 15,700 by 2042. The structure is 711 ft (216.6 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesOr 99E (hwy 81)
CrossesPudding River
Location027 MI S Canby
RouteState Highway 99
CountyClackamas County
StateOregon
Coordinates45.2336, -122.7502
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating16.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeArch - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+12 approach)
Design loadHS 20
Structure length711 ft (216.6 m)
Longest span121 ft (36.8 m)
Deck width42 ft (12.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic15,402 (2022)
Projected traffic15,700 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 99E (hwy 81) over Pudding River built?

It was built in 1922, making it 103 years old in 2025. It was reconstructed in 1947.

What condition is Or 99E (hwy 81) over Pudding River 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 August 2023.

How much traffic does Or 99E (hwy 81) over Pudding River carry?

About 15,402 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Or 99E (hwy 81) over Pudding River?

The structure is 711 ft (216.6 m) long with a longest span of 121 ft (36.8 m) and a deck 42 ft wide.

Who owns Or 99E (hwy 81) over Pudding River?

It is owned by the State Highway Agency.