US Bridges

Rosebud LN over Sidney Ditch

PoorPosted for load

Marion County, Oregon · 006 MI S E Marion · Structure no. 47C88 944

Built
1969
56 years old
Condition
Poor
inspected August 2024
Type
Slab
Wood or Timber
Length
36 ft
2 main spans
Daily traffic
139
2020 count
Owner
County
County Highway Agency

About this bridge

Rosebud LN over Sidney Ditch is a wood or timber slab carrying Rosebud LN over Sidney Ditch in Marion County, Oregon. It was built in 1969, so it is 56 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 139 vehicles a day, roughly 5% of them trucks, projected to reach 155 by 2025. The structure is 36 ft (11 m) long and 18 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesRosebud LN
CrossesSidney Ditch
Location006 MI S E Marion
RouteCounty Highway C0944
StateOregon
Coordinates44.746, -122.92912
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.4 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 20
Structure length36 ft (11 m)
Longest span17 ft (5.2 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic139 (2020)
Projected traffic155 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$184,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rosebud LN over Sidney Ditch built?

It was built in 1969, making it 56 years old in 2025.

What condition is Rosebud LN over Sidney Ditch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Rosebud LN over Sidney Ditch carry?

About 139 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Rosebud LN over Sidney Ditch?

The structure is 36 ft (11 m) long with a longest span of 17 ft (5.2 m) and a deck 18 ft wide.

Who owns Rosebud LN over Sidney Ditch?

It is owned by the County Highway Agency.