US Bridges

Main Street over John Day R(prairie City)

FairPosted for load

Grant County, Oregon · 0.2 M S US 26 (main St) · Structure no. 15464 062 00020

Built
1960
65 years old, rebuilt 1994
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
41
2020 count
Owner
County
County Highway Agency

About this bridge

Main Street over John Day R(prairie City) is a steel stringer/multi-beam or girder carrying Main Street over John Day R(prairie City) in Grant County, Oregon. It was built in 1960 and reconstructed in 1994, so it is 65 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 41 vehicles a day, projected to reach 51 by 2025. The structure is 41 ft (12.5 m) long and 34 ft wide.

CarriesMain Street
CrossesJohn Day R(prairie City)
Location0.2 M S US 26 (main St)
RouteCounty Highway 0B539
StateOregon
Coordinates44.45909, -118.7081
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
Deck7 GoodSome minor problems.
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 inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.7 US tons
Inventory rating11.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span39 ft (11.9 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2020)
Projected traffic51 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$272,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Main Street over John Day R(prairie City) built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1994.

What condition is Main Street over John Day R(prairie City) 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 2024.

How much traffic does Main Street over John Day R(prairie City) carry?

About 41 vehicles per day (2020 count).

How long is Main Street over John Day R(prairie City)?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 34 ft wide.

Who owns Main Street over John Day R(prairie City)?

It is owned by the County Highway Agency.