US Bridges

Cornell Road over Rock Creek

Fair

Washington County, Oregon · W of John Olsen Ave · Structure no. 19186 000 00000

Built
2001
24 years old
Condition
Fair
inspected July 2024
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
30 ft
1 main span
Daily traffic
24,439
2020 count
Owner
County
County Highway Agency

About this bridge

Cornell Road over Rock Creek is a aluminum, wrought iron, or cast iron culvert carrying Cornell Road over Rock Creek in Washington County, Oregon. It was built in 2001, so it is 24 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 5 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 24,439 vehicles a day, roughly 2% of them trucks, projected to reach 35,309 by 2025. The structure is 30 ft (9.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCornell Road
CrossesRock Creek
LocationW of John Olsen Ave
RouteCounty Highway 0
CountyWashington County
StateOregon
Coordinates45.5386, -122.89014
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert5 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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadHS 20
Structure length30 ft (9.2 m)
Longest span30 ft (9.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,439 (2020)
Projected traffic35,309 by 2025
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Cornell Road over Rock Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Cornell Road over Rock 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 Cornell Road over Rock Creek carry?

About 24,439 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Cornell Road over Rock Creek?

The structure is 30 ft (9.2 m) long with a longest span of 30 ft (9.2 m).

Who owns Cornell Road over Rock Creek?

It is owned by the County Highway Agency.