US Bridges

Or 6 (hwy 037) over Dairy Creek Oflow

Fair

Washington County, Oregon · 3.3 MI W of HWY 47 JCT · Structure no. 07684 037 04835

Built
1954
71 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
51 ft
3 main spans
Daily traffic
8,087
2022 count
Owner
State
State Highway Agency

About this bridge

Or 6 (hwy 037) over Dairy Creek Oflow is a concrete continuous slab carrying Or 6 (hwy 037) over Dairy Creek Oflow in Washington County, Oregon. It was built in 1954, so it is 71 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 8,087 vehicles a day, roughly 17% of them trucks, projected to reach 13,600 by 2042. The structure is 51 ft (15.5 m) long and 35 ft wide. If it were closed, the detour would be 33.6 mi (54 km).

Location

Open in Google Maps
CarriesOr 6 (hwy 037)
CrossesDairy Creek Oflow
Location3.3 MI W of HWY 47 JCT
RouteState Highway 6
CountyWashington County
StateOregon
Coordinates45.61059, -123.12943
Functional classRural Minor Arterial

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no 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 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 rating31.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,087 (2022)
Projected traffic13,600 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed33.6 mi (54 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$261,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 6 (hwy 037) over Dairy Creek Oflow built?

It was built in 1954, making it 71 years old in 2025.

What condition is Or 6 (hwy 037) over Dairy Creek Oflow 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 January 2025.

How much traffic does Or 6 (hwy 037) over Dairy Creek Oflow carry?

About 8,087 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Or 6 (hwy 037) over Dairy Creek Oflow?

The structure is 51 ft (15.5 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns Or 6 (hwy 037) over Dairy Creek Oflow?

It is owned by the State Highway Agency.