US Bridges

Or 224 (hwy 171) over Or 99E (hwy 81)

Fair

Clackamas County, Oregon · HWY 171 over HWY 081 · Structure no. 09668 171 00011

Built
1969
56 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
433 ft
3 main spans
Daily traffic
29,691
2022 count
Owner
State
State Highway Agency

About this bridge

Or 224 (hwy 171) over Or 99E (hwy 81) is a concrete continuous box beam or girders - multiple carrying Or 224 (hwy 171) over Or 99E (hwy 81) in Clackamas County, Oregon. It was built in 1969, so it is 56 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 29,691 vehicles a day, roughly 4% of them trucks, projected to reach 32,700 by 2042. The structure is 433 ft (132 m) long and 77 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesOr 224 (hwy 171)
CrossesOr 99E (hwy 81)
LocationHWY 171 over HWY 081
RouteState Highway 224
StateOregon
Coordinates45.44916, -122.64224
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42.5 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length433 ft (132 m)
Longest span165 ft (50.3 m)
Deck width77 ft (23.4 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,691 (2022)
Projected traffic32,700 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Or 224 (hwy 171) over Or 99E (hwy 81) built?

It was built in 1969, making it 56 years old in 2025.

What condition is Or 224 (hwy 171) over Or 99E (hwy 81) 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 Or 99E (hwy 81) carry?

About 29,691 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Or 224 (hwy 171) over Or 99E (hwy 81)?

The structure is 433 ft (132 m) long with a longest span of 165 ft (50.3 m) and a deck 77 ft wide.

Who owns Or 224 (hwy 171) over Or 99E (hwy 81)?

It is owned by the State Highway Agency.