US Bridges

Hawthorne Br. W.A. over Willamette River

FairPosted for load

Multnomah County, Oregon · Willamette River Mo 13.2 · Structure no. 02757D000000000

Built
1958
67 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
315 ft
12 main spans
Daily traffic
32,566
2020 count
Owner
County
County Highway Agency

About this bridge

Hawthorne Br. W.A. over Willamette River is a prestressed concrete stringer/multi-beam or girder carrying Hawthorne Br. W.A. over Willamette River in Multnomah County, Oregon. It was built in 1958, so it is 67 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 32,566 vehicles a day, roughly 10% of them trucks, projected to reach 35,916 by 2025. The structure is 315 ft (96 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHawthorne Br. W.A.
CrossesWillamette River
LocationWillamette River Mo 13.2
RouteCity Street 9366
CountyMultnomah County
StateOregon
Coordinates45.514, -122.67387
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating11 US tons
Inventory rating8.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans12 (+1 approach)
Design loadUnknown
Structure length315 ft (96 m)
Longest span58 ft (17.7 m)
Deck width81 ft (24.7 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deck18 ft (5.6 m)

Traffic and service

Average daily traffic32,566 (2020)
Projected traffic35,916 by 2025
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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$4.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hawthorne Br. W.A. over Willamette River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Hawthorne Br. W.A. over Willamette 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 March 2023.

How much traffic does Hawthorne Br. W.A. over Willamette River carry?

About 32,566 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Hawthorne Br. W.A. over Willamette River?

The structure is 315 ft (96 m) long with a longest span of 58 ft (17.7 m) and a deck 81 ft wide.

Who owns Hawthorne Br. W.A. over Willamette River?

It is owned by the County Highway Agency.