US Bridges

Or 99E(HWY 81) over Kellogg Lake Outlet

Fair

Clackamas County, Oregon · At Milwaukie Cc · Structure no. 01949 01E 00597

Built
1934
91 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
29,069
2022 count
Owner
State
State Highway Agency

About this bridge

Or 99E(HWY 81) over Kellogg Lake Outlet is a concrete continuous slab carrying Or 99E(HWY 81) over Kellogg Lake Outlet in Clackamas County, Oregon. It was built in 1934, so it is 91 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 29,069 vehicles a day, roughly 1% of them trucks, projected to reach 32,500 by 2042. The structure is 28 ft (8.5 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesOr 99E(HWY 81)
CrossesKellogg Lake Outlet
LocationAt Milwaukie Cc
RouteState Highway 99
StateOregon
Coordinates45.44171, -122.64184
Functional classUrban Other Principal 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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width100 ft (30.5 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,069 (2022)
Projected traffic32,500 by 2042
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 99E(HWY 81) over Kellogg Lake Outlet built?

It was built in 1934, making it 91 years old in 2025.

What condition is Or 99E(HWY 81) over Kellogg Lake Outlet 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 November 2024.

How much traffic does Or 99E(HWY 81) over Kellogg Lake Outlet carry?

About 29,069 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Or 99E(HWY 81) over Kellogg Lake Outlet?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 100 ft wide.

Who owns Or 99E(HWY 81) over Kellogg Lake Outlet?

It is owned by the State Highway Agency.