US Bridges

Cedar Canyon Road over Small Stream

Fair

Washington County, Oregon · 015 MI W HWY 47 · Structure no. 671287006400150

Built
1996
29 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
1,755
2020 count
Owner
County
County Highway Agency

About this bridge

Cedar Canyon Road over Small Stream is a prestressed concrete slab carrying Cedar Canyon Road over Small Stream in Washington County, Oregon. It was built in 1996, so it is 29 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 1,755 vehicles a day, roughly 5% of them trucks, projected to reach 1,936 by 2025. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesCedar Canyon Road
CrossesSmall Stream
Location015 MI W HWY 47
RouteCounty Highway C0064
CountyWashington County
StateOregon
Coordinates45.61805, -123.14275
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating33.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,755 (2020)
Projected traffic1,936 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$169,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cedar Canyon Road over Small Stream built?

It was built in 1996, making it 29 years old in 2025.

What condition is Cedar Canyon Road over Small Stream 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 Cedar Canyon Road over Small Stream carry?

About 1,755 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Cedar Canyon Road over Small Stream?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Cedar Canyon Road over Small Stream?

It is owned by the County Highway Agency.