US Bridges

Jefferson-Marion H over Sidney Ditch

Fair

Marion County, Oregon · 03 E Parrish Gap JCT 924 · Structure no. 21543 003500200

Built
2010
15 years old
Condition
Fair
inspected August 2024
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
3,988
2020 count
Owner
County
County Highway Agency

About this bridge

Jefferson-Marion H over Sidney Ditch is a steel culvert carrying Jefferson-Marion H over Sidney Ditch in Marion County, Oregon. It was built in 2010, so it is 15 years old, younger 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 3,988 vehicles a day, roughly 7% of them trucks, projected to reach 4,483 by 2025. The structure is 20 ft (6.2 m) long and 110 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesJefferson-Marion H
CrossesSidney Ditch
Location03 E Parrish Gap JCT 924
RouteCounty Highway A0566
CountyMarion County
StateOregon
Coordinates44.7329, -122.972
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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width110 ft (33.5 m)
Roadway width36 ft (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Jefferson-Marion H over Sidney Ditch built?

It was built in 2010, making it 15 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 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m) and a deck 110 ft wide.

Who owns Jefferson-Marion H over Sidney Ditch?

It is owned by the County Highway Agency.