US Bridges

Road over North Fork John Day

Fair

Umatilla County, Oregon · Int RD 55 and 5505 · Structure no. 061405000001039

Built
1959
66 years old
Condition
Fair
inspected August 2023
Type
Frame
Concrete Continuous
Length
153 ft
4 main spans
Daily traffic
17
1989 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over North Fork John Day is a concrete continuous frame carrying Road over North Fork John Day in Umatilla County, Oregon. It was built in 1959, so it is 66 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.

It carries about 17 vehicles a day, projected to reach 25 by 2045. The structure is 153 ft (46.6 m) long and 16 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesRoad
CrossesNorth Fork John Day
LocationInt RD 55 and 5505
RouteFederal Lands Road 55050
CountyUmatilla County
StateOregon
Coordinates45.01611, -118.85073
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating29 US tons
Inventory rating19.1 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length153 ft (46.6 m)
Longest span64 ft (19.4 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17 (1989)
Projected traffic25 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road over North Fork John Day built?

It was built in 1959, making it 66 years old in 2025.

What condition is Road over North Fork John Day 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 August 2023.

How much traffic does Road over North Fork John Day carry?

About 17 vehicles per day (1989 count).

How long is Road over North Fork John Day?

The structure is 153 ft (46.6 m) long with a longest span of 64 ft (19.4 m) and a deck 16 ft wide.

Who owns Road over North Fork John Day?

It is owned by the U.S. Forest Service.