US Bridges

Jefferson-Marion H over Sidney Ditch

FairPosted for load

Marion County, Oregon · 03 E Parrish Gap JCT 924 · Structure no. 47C201003500205

Built
1956
69 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
3,988
2020 count
Owner
County
County Highway Agency

About this bridge

Jefferson-Marion H over Sidney Ditch is a concrete continuous culvert carrying Jefferson-Marion H over Sidney Ditch in Marion County, Oregon. It was built in 1956, so it is 69 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 3,988 vehicles a day, roughly 7% of them trucks, projected to reach 4,483 by 2025. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesJefferson-Marion H
CrossesSidney Ditch
Location03 E Parrish Gap JCT 924
RouteCounty Highway A0566
CountyMarion County
StateOregon
Coordinates44.73501, -122.97809
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.4 US tons
Inventory rating17.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,988 (2020)
Projected traffic4,483 by 2025
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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$133,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jefferson-Marion H over Sidney Ditch built?

It was built in 1956, making it 69 years old in 2025.

What condition is Jefferson-Marion H over Sidney Ditch 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 Jefferson-Marion H over Sidney Ditch carry?

About 3,988 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Jefferson-Marion H over Sidney Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Jefferson-Marion H over Sidney Ditch?

It is owned by the County Highway Agency.