US Bridges

Or 224 (hwy 171) over Eagle Creek

Fair

Clackamas County, Oregon · 4.3 MI N of HWY 161 JCT · Structure no. 03060B171 01905

Built
1972
53 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
350 ft
2 main spans
Daily traffic
11,487
2022 count
Owner
State
State Highway Agency

About this bridge

Or 224 (hwy 171) over Eagle Creek is a prestressed concrete stringer/multi-beam or girder carrying Or 224 (hwy 171) over Eagle Creek in Clackamas County, Oregon. It was built in 1972, so it is 53 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.

It carries about 11,487 vehicles a day, roughly 7% of them trucks, projected to reach 13,700 by 2042. The structure is 350 ft (106.7 m) long and 50 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesOr 224 (hwy 171)
CrossesEagle Creek
Location4.3 MI N of HWY 161 JCT
RouteState Highway 224
CountyClackamas County
StateOregon
Coordinates45.34245, -122.35096
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.
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 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 rating28.5 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length350 ft (106.7 m)
Longest span175 ft (53.3 m)
Deck width50 ft (15.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,487 (2022)
Projected traffic13,700 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 Eagle Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Or 224 (hwy 171) over Eagle Creek 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 Eagle Creek carry?

About 11,487 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Or 224 (hwy 171) over Eagle Creek?

The structure is 350 ft (106.7 m) long with a longest span of 175 ft (53.3 m) and a deck 50 ft wide.

Who owns Or 224 (hwy 171) over Eagle Creek?

It is owned by the State Highway Agency.