US Bridges

Flat Creek Road over John Day River (odfw)

Good

Grant County, Oregon · 0.2 Mi. S of US 26 MP 136 · Structure no. 21269 000000000

Built
2005
20 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
109 ft
1 main span
Daily traffic
50
2010 count
Owner
State
Other State Agency

About this bridge

Flat Creek Road over John Day River (odfw) is a prestressed concrete tee beam carrying Flat Creek Road over John Day River (odfw) in Grant County, Oregon. It was built in 2005, so it is 20 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 55 by 2030. The structure is 109 ft (33.2 m) long and 16 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

CarriesFlat Creek Road
CrossesJohn Day River (odfw)
Location0.2 Mi. S of US 26 MP 136
RouteState Lands Road 0
StateOregon
Coordinates44.45573, -119.44466
Functional classRural Local

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length109 ft (33.2 m)
Longest span109 ft (33.2 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2010)
Projected traffic55 by 2030
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Flat Creek Road over John Day River (odfw) built?

It was built in 2005, making it 20 years old in 2025.

What condition is Flat Creek Road over John Day River (odfw) 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 September 2023.

How much traffic does Flat Creek Road over John Day River (odfw) carry?

About 50 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Flat Creek Road over John Day River (odfw)?

The structure is 109 ft (33.2 m) long with a longest span of 109 ft (33.2 m) and a deck 16 ft wide.

Who owns Flat Creek Road over John Day River (odfw)?

It is owned by the Other State Agency.