US Bridges

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

Fair

Clackamas County, Oregon · HWY 171AA over HWY 81 · Structure no. 09669A171C00033

Built
1994
31 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,285 ft
8 main spans
Daily traffic
10,389
2022 count
Owner
State
State Highway Agency

About this bridge

Or 224 (hwy 171) over Or 99E (hwy 81) is a prestressed 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 1994, so it is 31 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 10,389 vehicles a day, roughly 4% of them trucks, projected to reach 8,700 by 2030. The structure is 1,285 ft (391.7 m) long and 37 ft wide.

Location

Open in Google Maps
CarriesOr 224 (hwy 171)
CrossesOr 99E (hwy 81)
LocationHWY 171AA over HWY 81
RouteState Highway 224
CountyClackamas County
StateOregon
Coordinates45.45013, -122.64161
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating53.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans8 (+1 approach)
Design loadHS 25 or greater
Structure length1,285 ft (391.7 m)
Longest span280 ft (85.3 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,389 (2022)
Projected traffic8,700 by 2030
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$7.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

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

It was built in 1994, making it 31 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 10,389 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 1,285 ft (391.7 m) long with a longest span of 280 ft (85.3 m) and a deck 37 ft wide.

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

It is owned by the State Highway Agency.