US Bridges

Rieth Road over Furnish Ditch

GoodPosted for load

Umatilla County, Oregon · 1.5 MI SE of HWY 320 · Structure no. 59C706130000296

Built
1921
104 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Concrete
Length
25 ft
1 main span
Daily traffic
281
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 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. Its operating status is: posted for load restriction.

It carries about 281 vehicles a day, roughly 20% of them trucks, projected to reach 326 by 2025. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesRieth Road
CrossesFurnish Ditch
Location1.5 MI SE of HWY 320
RouteCounty Highway 0
CountyUmatilla County
StateOregon
Coordinates45.72334, -119.17462
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 above top of footing
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 rating20.7 US tons
Inventory rating16.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width22 ft (6.8 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic281 (2020)
Projected traffic326 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$128,000
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 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 November 2024.

How much traffic does Rieth Road over Furnish Ditch carry?

About 281 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Rieth Road over Furnish Ditch?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 22 ft wide.

Who owns Rieth Road over Furnish Ditch?

It is owned by the County Highway Agency.