US Bridges

Or 18 (hwy 39) over Deer Creek

Fair

Yamhill County, Oregon · 063 MI E Polk Yam CO LN · Structure no. 03114 039 03606

Built
1941
84 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
16,492
2022 count
Owner
State
State Highway Agency

About this bridge

Or 18 (hwy 39) over Deer Creek is a concrete continuous tee beam carrying Or 18 (hwy 39) over Deer Creek in Yamhill County, Oregon. It was built in 1941, so it is 84 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.

It carries about 16,492 vehicles a day, roughly 9% of them trucks, projected to reach 16,600 by 2042. The structure is 150 ft (45.7 m) long and 35 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

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CarriesOr 18 (hwy 39)
CrossesDeer Creek
Location063 MI E Polk Yam CO LN
RouteState Highway 18
CountyYamhill County
StateOregon
Coordinates45.1074, -123.33022
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 alignment8: Equal to present desirable criteria
Operating rating21.1 US tons
Inventory rating16.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length150 ft (45.7 m)
Longest span60 ft (18.3 m)
Deck width35 ft (10.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,492 (2022)
Projected traffic16,600 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed10.6 mi (17 km)
TollOn a free road
National Highway SystemYes

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$769,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 18 (hwy 39) over Deer Creek built?

It was built in 1941, making it 84 years old in 2025.

What condition is Or 18 (hwy 39) over Deer Creek 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 November 2024.

How much traffic does Or 18 (hwy 39) over Deer Creek carry?

About 16,492 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Or 18 (hwy 39) over Deer Creek?

The structure is 150 ft (45.7 m) long with a longest span of 60 ft (18.3 m) and a deck 35 ft wide.

Who owns Or 18 (hwy 39) over Deer Creek?

It is owned by the State Highway Agency.