US Bridges

North Valley RD over Ayres Creek

Fair

Yamhill County, Oregon · So of Dewey on 4 · Structure no. 20751 000 00850

Built
2008
17 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
2,300
2020 count
Owner
County
County Highway Agency

About this bridge

North Valley RD over Ayres Creek is a prestressed concrete slab carrying North Valley RD over Ayres Creek in Yamhill County, Oregon. It was built in 2008, so it is 17 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 2,300 vehicles a day, roughly 12% of them trucks, projected to reach 2,305 by 2025. The structure is 56 ft (17.1 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesNorth Valley RD
CrossesAyres Creek
LocationSo of Dewey on 4
RouteCounty Highway C0004
CountyYamhill County
StateOregon
Coordinates45.37926, -123.09595
Functional classRural Major 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be 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 typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length56 ft (17.1 m)
Longest span56 ft (17.1 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2020)
Projected traffic2,305 by 2025
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 North Valley RD over Ayres Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is North Valley RD over Ayres 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 2023.

How much traffic does North Valley RD over Ayres Creek carry?

About 2,300 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is North Valley RD over Ayres Creek?

The structure is 56 ft (17.1 m) long with a longest span of 56 ft (17.1 m) and a deck 32 ft wide.

Who owns North Valley RD over Ayres Creek?

It is owned by the County Highway Agency.