US Bridges

Old Railroad Grade over North Yamhill River

FairPosted for load

Yamhill County, Oregon · 6 MI NW of Yamhill · Structure no. 11526 000

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
160 ft
5 main spans
Daily traffic
244
2020 count
Owner
County
County Highway Agency

About this bridge

Old Railroad Grade over North Yamhill River is a wood or timber stringer/multi-beam or girder carrying Old Railroad Grade over North Yamhill River in Yamhill County, Oregon. It was built in 1972, so it is 53 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 5 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 244 vehicles a day, roughly 20% of them trucks, projected to reach 274 by 2025. The structure is 160 ft (48.8 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesOld Railroad Grade
CrossesNorth Yamhill River
Location6 MI NW of Yamhill
RouteCounty Highway C0290
CountyYamhill County
StateOregon
Coordinates45.36775, -123.27468
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.5 US tons
Inventory rating9.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadH 20
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic244 (2020)
Projected traffic274 by 2025
Trucks20%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$820,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Railroad Grade over North Yamhill River built?

It was built in 1972, making it 53 years old in 2025.

What condition is Old Railroad Grade over North Yamhill 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 September 2024.

How much traffic does Old Railroad Grade over North Yamhill River carry?

About 244 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Old Railroad Grade over North Yamhill River?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 16 ft wide.

Who owns Old Railroad Grade over North Yamhill River?

It is owned by the County Highway Agency.