US Bridges

Or 224 (hwy 171) over Clackamas River

FairPosted for load

Clackamas County, Oregon · 26.5 MI SE Estacada · Structure no. 05269 171 04996

Built
1958
67 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
149
2022 count
Owner
State
State Highway Agency

About this bridge

Or 224 (hwy 171) over Clackamas River is a concrete continuous tee beam carrying Or 224 (hwy 171) over Clackamas River in Clackamas County, Oregon. It was built in 1958, so it is 67 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 149 vehicles a day, roughly 21% of them trucks, projected to reach 310 by 2042. The structure is 90 ft (27.4 m) long and 31 ft wide. If it were closed, the detour would be 52.2 mi (84 km).

CarriesOr 224 (hwy 171)
CrossesClackamas River
Location26.5 MI SE Estacada
RouteState Highway 224
StateOregon
Coordinates45.07963, -122.04278
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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 rating30.3 US tons
Inventory rating23.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length90 ft (27.4 m)
Longest span55 ft (16.8 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic149 (2022)
Projected traffic310 by 2042
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed52.2 mi (84 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Or 224 (hwy 171) over Clackamas River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Or 224 (hwy 171) over Clackamas 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 224 (hwy 171) over Clackamas River carry?

About 149 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is Or 224 (hwy 171) over Clackamas River?

The structure is 90 ft (27.4 m) long with a longest span of 55 ft (16.8 m) and a deck 31 ft wide.

Who owns Or 224 (hwy 171) over Clackamas River?

It is owned by the State Highway Agency.