US Bridges

Conifer Rd. over Little Pudding River

FairPosted for load

Marion County, Oregon · 01.2 W of Howell Prairie · Structure no. 05514 747 00000

Built
1970
55 years old
Condition
Fair
inspected August 2024
Type
Slab
Wood or Timber
Length
55 ft
3 main spans
Daily traffic
1,381
2020 count
Owner
County
County Highway Agency

About this bridge

Conifer Rd. over Little Pudding River is a wood or timber slab carrying Conifer Rd. over Little Pudding River in Marion County, Oregon. It was built in 1970, so it is 55 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 1,381 vehicles a day, roughly 6% of them trucks, projected to reach 1,551 by 2025. The structure is 55 ft (16.8 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesConifer Rd.
CrossesLittle Pudding River
Location01.2 W of Howell Prairie
RouteCounty Highway A0580
CountyMarion County
StateOregon
Coordinates44.94497, -122.91188
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length55 ft (16.8 m)
Longest span18 ft (5.5 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,381 (2020)
Projected traffic1,551 by 2025
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$282,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Conifer Rd. over Little Pudding River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Conifer Rd. over Little Pudding River 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 Conifer Rd. over Little Pudding River carry?

About 1,381 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Conifer Rd. over Little Pudding River?

The structure is 55 ft (16.8 m) long with a longest span of 18 ft (5.5 m) and a deck 24 ft wide.

Who owns Conifer Rd. over Little Pudding River?

It is owned by the County Highway Agency.