US Bridges

Moores Valley RD over Yamhill River

Good

Yamhill County, Oregon · 017 MI W Yamhill · Structure no. 20329 021 00159

Built
2007
18 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
171 ft
2 main spans
Daily traffic
639
2020 count
Owner
County
County Highway Agency

About this bridge

Moores Valley RD over Yamhill River is a prestressed concrete slab carrying Moores Valley RD over Yamhill River in Yamhill County, Oregon. It was built in 2007, so it is 18 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 639 vehicles a day, roughly 15% of them trucks, projected to reach 713 by 2025. The structure is 171 ft (52.1 m) long and 36 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesMoores Valley RD
CrossesYamhill River
Location017 MI W Yamhill
RouteCounty Highway A0708
StateOregon
Coordinates45.33768, -123.21794
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length171 ft (52.1 m)
Longest span85 ft (25.9 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic639 (2020)
Projected traffic713 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Moores Valley RD over Yamhill River built?

It was built in 2007, making it 18 years old in 2025.

What condition is Moores Valley RD over Yamhill River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Moores Valley RD over Yamhill River carry?

About 639 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Moores Valley RD over Yamhill River?

The structure is 171 ft (52.1 m) long with a longest span of 85 ft (25.9 m) and a deck 36 ft wide.

Who owns Moores Valley RD over Yamhill River?

It is owned by the County Highway Agency.