US Bridges

County RD 53 over Willamette R/River RD S

FairPosted for load

Marion County, Oregon · S.River Rd/Willamette R · Structure no. 05789A005300000

Built
1951
74 years old, rebuilt 1985
Condition
Fair
inspected March 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
2,230 ft
9 main spans
Daily traffic
6,536
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 53 over Willamette R/River RD S is a steel continuous girder and floorbeam system carrying County RD 53 over Willamette R/River RD S in Marion County, Oregon. It was built in 1951 and reconstructed in 1985, so it is 74 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. Its operating status is: posted for load restriction.

It carries about 6,536 vehicles a day, roughly 2% of them trucks, projected to reach 7,286 by 2025. The structure is 2,230 ft (679.7 m) long and 35 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

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CarriesCounty RD 53
CrossesWillamette R/River RD S
LocationS.River Rd/Willamette R
RouteCounty Highway A0560
CountyMarion County
StateOregon
Coordinates44.84561, -123.17995
Functional classRural 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.
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.2 US tons
Inventory rating17.2 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9 (+28 approach)
Design loadHS 20
Structure length2,230 ft (679.7 m)
Longest span152 ft (46.3 m)
Deck width35 ft (10.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,536 (2020)
Projected traffic7,286 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed23 mi (37 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$11.4 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was County RD 53 over Willamette R/River RD S built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1985.

What condition is County RD 53 over Willamette R/River RD S 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 County RD 53 over Willamette R/River RD S carry?

About 6,536 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is County RD 53 over Willamette R/River RD S?

The structure is 2,230 ft (679.7 m) long with a longest span of 152 ft (46.3 m) and a deck 35 ft wide.

Who owns County RD 53 over Willamette R/River RD S?

It is owned by the County Highway Agency.