US Bridges

NW Circle Blvd. over Dixon Creek

FairPosted for load

Benton County, Oregon · W of NW 23rd · Structure no. 07T05 000000265

Built
1996
29 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
8,322
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

NW Circle Blvd. over Dixon Creek is a concrete continuous culvert carrying NW Circle Blvd. over Dixon Creek in Benton 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. Its operating status is: posted for load restriction.

It carries about 8,322 vehicles a day, roughly 10% of them trucks, projected to reach 12,200 by 2040. The structure is 26 ft (7.9 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNW Circle Blvd.
CrossesDixon Creek
LocationW of NW 23rd
RouteCity Street 0
StateOregon
Coordinates44.58637, -123.27868
Functional classUrban 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.8 US tons
Inventory rating21.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width72 ft (21.9 m)
Roadway width60 ft (18.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,322 (2020)
Projected traffic12,200 by 2040
Trucks10%
Lanes on structure3
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 NW Circle Blvd. over Dixon Creek built?

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

What condition is NW Circle Blvd. over Dixon 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 NW Circle Blvd. over Dixon Creek carry?

About 8,322 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is NW Circle Blvd. over Dixon Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 72 ft wide.

Who owns NW Circle Blvd. over Dixon Creek?

It is owned by the City or Municipal Highway Agency.