US Bridges

Washington ST over HWY 064

Fair

Multnomah County, Oregon · 6.0 MI S Ore-Wash Line · Structure no. 13523 064 02057

Built
1978
47 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
255 ft
2 main spans
Daily traffic
16,177
2022 count
Owner
State
State Highway Agency

About this bridge

Washington ST over HWY 064 is a prestressed concrete continuous box beam or girders - multiple carrying Washington ST over HWY 064 in Multnomah County, Oregon. It was built in 1978, so it is 47 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 16,177 vehicles a day, roughly 7% of them trucks, projected to reach 76,400 by 2040. The structure is 255 ft (77.7 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWashington ST
CrossesHWY 064
Location6.0 MI S Ore-Wash Line
RouteCity Street 0
CountyMultnomah County
StateOregon
Coordinates45.51833, -122.56539
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating62.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length255 ft (77.7 m)
Longest span135 ft (41.1 m)
Deck width65 ft (19.7 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,177 (2022)
Projected traffic76,400 by 2040
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Washington ST over HWY 064 built?

It was built in 1978, making it 47 years old in 2025.

What condition is Washington ST over HWY 064 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 March 2023.

How much traffic does Washington ST over HWY 064 carry?

About 16,177 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Washington ST over HWY 064?

The structure is 255 ft (77.7 m) long with a longest span of 135 ft (41.1 m) and a deck 65 ft wide.

Who owns Washington ST over HWY 064?

It is owned by the State Highway Agency.