US Bridges

Or 99E (HWY81)CO over Johnson Creek

Fair

Multnomah County, Oregon · 0.2 MI N Milwaukie Cl · Structure no. 17082 01EC00450

Built
1992
33 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
108 ft
1 main span
Daily traffic
45,032
2022 count
Owner
State
State Highway Agency

About this bridge

Or 99E (HWY81)CO over Johnson Creek is a concrete box beam or girders - multiple carrying Or 99E (HWY81)CO over Johnson Creek in Multnomah County, Oregon. It was built in 1992, so it is 33 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 45,032 vehicles a day, roughly 3% of them trucks, projected to reach 51,600 by 2042. The structure is 108 ft (32.9 m) long and 58 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesOr 99E (HWY81)CO
CrossesJohnson Creek
Location0.2 MI N Milwaukie Cl
RouteState Highway 99
StateOregon
Coordinates45.4638, -122.63941
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19 US tons
Inventory rating14.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length108 ft (32.9 m)
Longest span108 ft (32.9 m)
Deck width58 ft (17.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,032 (2022)
Projected traffic51,600 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 (HWY81)CO over Johnson Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Or 99E (HWY81)CO over Johnson 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 November 2024.

How much traffic does Or 99E (HWY81)CO over Johnson Creek carry?

About 45,032 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Or 99E (HWY81)CO over Johnson Creek?

The structure is 108 ft (32.9 m) long with a longest span of 108 ft (32.9 m) and a deck 58 ft wide.

Who owns Or 99E (HWY81)CO over Johnson Creek?

It is owned by the State Highway Agency.