US Bridges

SW 53rd ST over Marys River

FairPosted for load

Benton County, Oregon · 014 S of CR 25463 · Structure no. 14443 000 00224

Built
1965
60 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
149 ft
1 main span
Daily traffic
321
2020 count
Owner
County
County Highway Agency

About this bridge

SW 53rd ST over Marys River is a prestressed concrete tee beam carrying SW 53rd ST over Marys River in Benton County, Oregon. It was built in 1965, so it is 60 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 321 vehicles a day, roughly 5% of them trucks, projected to reach 437 by 2040. The structure is 149 ft (45.4 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSW 53rd ST
CrossesMarys River
Location014 S of CR 25463
RouteCounty Highway 0
CountyBenton County
StateOregon
Coordinates44.51942, -123.31572
Functional classRural Local

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.4 US tons
Inventory rating21.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1 (+2 approach)
Design loadHS 20
Structure length149 ft (45.4 m)
Longest span70 ft (21.3 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic321 (2020)
Projected traffic437 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 SW 53rd ST over Marys River built?

It was built in 1965, making it 60 years old in 2025.

What condition is SW 53rd ST over Marys 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 July 2024.

How much traffic does SW 53rd ST over Marys River carry?

About 321 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is SW 53rd ST over Marys River?

The structure is 149 ft (45.4 m) long with a longest span of 70 ft (21.3 m) and a deck 28 ft wide.

Who owns SW 53rd ST over Marys River?

It is owned by the County Highway Agency.