US Bridges

County RD 1 over N Fk John Day R(rudio Br

Fair

Grant County, Oregon · 0.1 MI S JCT State 402 · Structure no. 23C011001 00010

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Truss - Thru
Steel
Length
354 ft
1 main span
Daily traffic
16
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 1 over N Fk John Day R(rudio Br is a steel truss - thru carrying County RD 1 over N Fk John Day R(rudio Br in Grant County, Oregon. It was built in 1966, so it is 59 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 16 vehicles a day, roughly 10% of them trucks, projected to reach 19 by 2025. The structure is 354 ft (107.9 m) long and 22 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCounty RD 1
CrossesN Fk John Day R(rudio Br
Location0.1 MI S JCT State 402
RouteCounty Highway C0001
CountyGrant County
StateOregon
Coordinates44.78809, -119.57799
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.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.2 US tons
Inventory rating17.2 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1 (+2 approach)
Design loadH 15
Structure length354 ft (107.9 m)
Longest span151 ft (46 m)
Deck width22 ft (6.6 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deck13 ft (4 m)

Traffic and service

Average daily traffic16 (2020)
Projected traffic19 by 2025
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 1 over N Fk John Day R(rudio Br built?

It was built in 1966, making it 59 years old in 2025.

What condition is County RD 1 over N Fk John Day R(rudio Br 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 July 2023.

How much traffic does County RD 1 over N Fk John Day R(rudio Br carry?

About 16 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 1 over N Fk John Day R(rudio Br?

The structure is 354 ft (107.9 m) long with a longest span of 151 ft (46 m) and a deck 22 ft wide.

Who owns County RD 1 over N Fk John Day R(rudio Br?

It is owned by the County Highway Agency.