US Bridges

Barnes RD over Cedar Mill Creek

Fair

Washington County, Oregon · 005 MI W Cedar Hills Blvd · Structure no. 20304 001400223

Built
2005
20 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
20,157
2020 count
Owner
County
County Highway Agency

About this bridge

Barnes RD over Cedar Mill Creek is a prestressed concrete slab carrying Barnes RD over Cedar Mill Creek in Washington County, Oregon. It was built in 2005, so it is 20 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 20,157 vehicles a day, roughly 5% of them trucks, projected to reach 20,442 by 2025. The structure is 51 ft (15.4 m) long and 97 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesBarnes RD
CrossesCedar Mill Creek
Location005 MI W Cedar Hills Blvd
RouteCounty Highway 14
StateOregon
Coordinates45.5219, -122.80475
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
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length51 ft (15.4 m)
Longest span50 ft (15.2 m)
Deck width97 ft (29.5 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,157 (2020)
Projected traffic20,442 by 2025
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 Barnes RD over Cedar Mill Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Barnes RD over Cedar Mill 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 September 2024.

How much traffic does Barnes RD over Cedar Mill Creek carry?

About 20,157 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Barnes RD over Cedar Mill Creek?

The structure is 51 ft (15.4 m) long with a longest span of 50 ft (15.2 m) and a deck 97 ft wide.

Who owns Barnes RD over Cedar Mill Creek?

It is owned by the County Highway Agency.