US Bridges

HWY 154 over Farmer River

FairPosted for load

Yamhill County, Oregon · 03.1 MI S HWY 39 JCT · Structure no. 01730 154 00311

Built
1932
93 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
95 ft
5 main spans
Daily traffic
4,358
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 154 over Farmer River is a wood or timber stringer/multi-beam or girder carrying HWY 154 over Farmer River in Yamhill County, Oregon. It was built in 1932, so it is 93 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 other load-capacity restriction.

It carries about 4,358 vehicles a day, roughly 13% of them trucks, projected to reach 5,800 by 2042. The structure is 95 ft (29 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesHWY 154
CrossesFarmer River
Location03.1 MI S HWY 39 JCT
RouteState Highway 154
CountyYamhill County
StateOregon
Coordinates45.16945, -123.10783
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,358 (2022)
Projected traffic5,800 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$487,000
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY 154 over Farmer River built?

It was built in 1932, making it 93 years old in 2025.

What condition is HWY 154 over Farmer 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 June 2023.

How much traffic does HWY 154 over Farmer River carry?

About 4,358 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is HWY 154 over Farmer River?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns HWY 154 over Farmer River?

It is owned by the State Highway Agency.