US Bridges

HWY 064 over Columbia River

Fair

Multnomah County, Oregon · At Ore-Wash Line · Structure no. 09555 064 02632

Built
1982
43 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
7,434 ft
23 main spans
Daily traffic
148,936
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 064 over Columbia River is a prestressed concrete continuous box beam or girders - multiple carrying HWY 064 over Columbia River in Multnomah County, Oregon. It was built in 1982, so it is 43 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 148,936 vehicles a day, roughly 6% of them trucks, projected to reach 203,600 by 2042. The structure is 7,434 ft (2,265.9 m) long and 151 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesHWY 064
CrossesColumbia River
LocationAt Ore-Wash Line
RouteInterstate 205
StateOregon
Coordinates45.5917, -122.54779
Functional classUrban Principal Arterial - Interstate

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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans23
Design loadHS 20 + Mod
Structure length7,434 ft (2,265.9 m)
Longest span600 ft (182.9 m)
Deck width151 ft (45.9 m)
Roadway width136 ft (41.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic148,936 (2022)
Projected traffic203,600 by 2042
Trucks6%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was HWY 064 over Columbia River built?

It was built in 1982, making it 43 years old in 2025.

What condition is HWY 064 over Columbia River 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 2024.

How much traffic does HWY 064 over Columbia River carry?

About 148,936 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is HWY 064 over Columbia River?

The structure is 7,434 ft (2,265.9 m) long with a longest span of 600 ft (182.9 m) and a deck 151 ft wide.

Who owns HWY 064 over Columbia River?

It is owned by the State Highway Agency.