US Bridges

Bryant RD over Oswego Canal

Fair

Clackamas County, Oregon · 1 MI SE Loones Ferry RD · Structure no. 06513 212 00069

Built
1934
91 years old, rebuilt 1960
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
4,400
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bryant RD over Oswego Canal is a steel stringer/multi-beam or girder carrying Bryant RD over Oswego Canal in Clackamas County, Oregon. It was built in 1934 and reconstructed in 1960, so it is 91 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.

It carries about 4,400 vehicles a day, roughly 30% of them trucks, projected to reach 4,500 by 2038. The structure is 37 ft (11.4 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesBryant RD
CrossesOswego Canal
Location1 MI SE Loones Ferry RD
RouteCounty Highway 9521
CountyClackamas County
StateOregon
Coordinates45.39516, -122.7193
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.4 US tons
Inventory rating76.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length37 ft (11.4 m)
Longest span36 ft (11 m)
Deck width49 ft (14.9 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2018)
Projected traffic4,500 by 2038
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bryant RD over Oswego Canal built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1960.

What condition is Bryant RD over Oswego Canal 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 May 2023.

How much traffic does Bryant RD over Oswego Canal carry?

About 4,400 vehicles per day (2018 count), of which roughly 30% are trucks.

How long is Bryant RD over Oswego Canal?

The structure is 37 ft (11.4 m) long with a longest span of 36 ft (11 m) and a deck 49 ft wide.

Who owns Bryant RD over Oswego Canal?

It is owned by the City or Municipal Highway Agency.