US Bridges

Grand Ronde RD over Agency Creek

Fair

Yamhill County, Oregon · 1.5M N Grand Ronde Agency · Structure no. 11686F000

Built
1967
58 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
95
2020 count
Owner
County
County Highway Agency

About this bridge

Grand Ronde RD over Agency Creek is a prestressed concrete slab carrying Grand Ronde RD over Agency Creek in Yamhill County, Oregon. It was built in 1967, so it is 58 years old, older 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 95 vehicles a day, projected to reach 106 by 2025. The structure is 51 ft (15.5 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesGrand Ronde RD
CrossesAgency Creek
Location1.5M N Grand Ronde Agency
RouteCounty Highway C0402
CountyYamhill County
StateOregon
Coordinates45.0981, -123.62005
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span50 ft (15.2 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (2020)
Projected traffic106 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Grand Ronde RD over Agency Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Grand Ronde RD over Agency 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 Grand Ronde RD over Agency Creek carry?

About 95 vehicles per day (2020 count).

How long is Grand Ronde RD over Agency Creek?

The structure is 51 ft (15.5 m) long with a longest span of 50 ft (15.2 m) and a deck 21 ft wide.

Who owns Grand Ronde RD over Agency Creek?

It is owned by the County Highway Agency.