US Bridges

Oatfield Road over Kellogg Creek

Fair

Clackamas County, Oregon · At Milwaukie Scl · Structure no. 06056 368 00020

Built
1953
72 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
159 ft
3 main spans
Daily traffic
10,094
2020 count
Owner
County
County Highway Agency

About this bridge

Oatfield Road over Kellogg Creek is a concrete continuous tee beam carrying Oatfield Road over Kellogg Creek in Clackamas County, Oregon. It was built in 1953, so it is 72 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 10,094 vehicles a day, roughly 7% of them trucks, projected to reach 10,239 by 2025. The structure is 159 ft (48.5 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesOatfield Road
CrossesKellogg Creek
LocationAt Milwaukie Scl
RouteCounty Highway 9665
CountyClackamas County
StateOregon
Coordinates45.43339, -122.63107
Functional classUrban 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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span60 ft (18.3 m)
Deck width39 ft (11.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,094 (2020)
Projected traffic10,239 by 2025
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$799,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Oatfield Road over Kellogg Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is Oatfield Road over Kellogg 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 May 2023.

How much traffic does Oatfield Road over Kellogg Creek carry?

About 10,094 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Oatfield Road over Kellogg Creek?

The structure is 159 ft (48.5 m) long with a longest span of 60 ft (18.3 m) and a deck 39 ft wide.

Who owns Oatfield Road over Kellogg Creek?

It is owned by the County Highway Agency.