US Bridges

Rieth Road over Furnish Ditch

FairPosted for load

Umatilla County, Oregon · 4.4 MI SE of HWY 320 · Structure no. 59C751130000592

Built
1921
104 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
30 ft
1 main span
Daily traffic
135
2020 count
Owner
County
County Highway Agency

About this bridge

Rieth Road over Furnish Ditch is a concrete tee beam carrying Rieth Road over Furnish Ditch in Umatilla County, Oregon. It was built in 1921, so it is 104 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 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 135 vehicles a day, roughly 15% of them trucks, projected to reach 155 by 2025. The structure is 30 ft (9.1 m) long and 23 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

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CarriesRieth Road
CrossesFurnish Ditch
Location4.4 MI SE of HWY 320
RouteCounty Highway 0
CountyUmatilla County
StateOregon
Coordinates45.69987, -119.1344
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating21.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span25 ft (7.6 m)
Deck width23 ft (6.9 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2020)
Projected traffic155 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 Rieth Road over Furnish Ditch built?

It was built in 1921, making it 104 years old in 2025.

What condition is Rieth Road over Furnish Ditch 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 November 2024.

How much traffic does Rieth Road over Furnish Ditch carry?

About 135 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Rieth Road over Furnish Ditch?

The structure is 30 ft (9.1 m) long with a longest span of 25 ft (7.6 m) and a deck 23 ft wide.

Who owns Rieth Road over Furnish Ditch?

It is owned by the County Highway Agency.