US Bridges

Matheny RD over Overflow Channel

Fair

Marion County, Oregon · 01.0 MI E Wheatland Ferry · Structure no. 47C10 024 00000

Built
1971
54 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
84 ft
5 main spans
Daily traffic
884
2020 count
Owner
County
County Highway Agency

About this bridge

Matheny RD over Overflow Channel is a wood or timber stringer/multi-beam or girder carrying Matheny RD over Overflow Channel in Marion County, Oregon. It was built in 1971, so it is 54 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.

It carries about 884 vehicles a day, roughly 12% of them trucks, projected to reach 994 by 2025. The structure is 84 ft (25.6 m) long and 30 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

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CarriesMatheny RD
CrossesOverflow Channel
Location01.0 MI E Wheatland Ferry
RouteCounty Highway A0587
CountyMarion County
StateOregon
Coordinates45.09338, -123.02931
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating19.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span17 ft (5.2 m)
Deck width30 ft (9.2 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic884 (2020)
Projected traffic994 by 2025
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Matheny RD over Overflow Channel built?

It was built in 1971, making it 54 years old in 2025.

What condition is Matheny RD over Overflow Channel 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 August 2024.

How much traffic does Matheny RD over Overflow Channel carry?

About 884 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is Matheny RD over Overflow Channel?

The structure is 84 ft (25.6 m) long with a longest span of 17 ft (5.2 m) and a deck 30 ft wide.

Who owns Matheny RD over Overflow Channel?

It is owned by the County Highway Agency.