US Bridges

Pihl Road over Dairy Creek

Fair

Washington County, Oregon · 0016 MI N HWY 26 · Structure no. 671376022100000

Built
1984
41 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
88 ft
2 main spans
Daily traffic
694
2020 count
Owner
County
County Highway Agency

About this bridge

Pihl Road over Dairy Creek is a prestressed concrete slab carrying Pihl Road over Dairy Creek in Washington County, Oregon. It was built in 1984, so it is 41 years old, younger 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 694 vehicles a day, roughly 5% of them trucks, projected to reach 766 by 2025. The structure is 88 ft (26.8 m) long and 28 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesPihl Road
CrossesDairy Creek
Location0016 MI N HWY 26
RouteCounty Highway C0019
CountyWashington County
StateOregon
Coordinates45.66593, -123.16322
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length88 ft (26.8 m)
Longest span44 ft (13.4 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic694 (2020)
Projected traffic766 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pihl Road over Dairy Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Pihl Road over Dairy 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 July 2024.

How much traffic does Pihl Road over Dairy Creek carry?

About 694 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Pihl Road over Dairy Creek?

The structure is 88 ft (26.8 m) long with a longest span of 44 ft (13.4 m) and a deck 28 ft wide.

Who owns Pihl Road over Dairy Creek?

It is owned by the County Highway Agency.