US Bridges

Finch RD in Kerby over Illinois River

FairPosted for load

Josephine County, Oregon · T39S-R8W-S9 Josephine CO · Structure no. 531515531500038

Built
1926
99 years old
Condition
Fair
inspected October 2024
Type
Truss - Thru
Steel
Length
364 ft
2 main spans
Daily traffic
273
2020 count
Owner
County
County Highway Agency

About this bridge

Finch RD in Kerby over Illinois River is a steel truss - thru carrying Finch RD in Kerby over Illinois River in Josephine County, Oregon. It was built in 1926, so it is 99 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 other load-capacity restriction.

It carries about 273 vehicles a day, roughly 10% of them trucks, projected to reach 318 by 2025. The structure is 364 ft (110.9 m) long and 18 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

Open in Google Maps
CarriesFinch RD in Kerby
CrossesIllinois River
LocationT39S-R8W-S9 Josephine CO
RouteCounty Highway C5315
CountyJosephine County
StateOregon
Coordinates42.19374, -123.65874
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length364 ft (110.9 m)
Longest span180 ft (54.9 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic273 (2020)
Projected traffic318 by 2025
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Finch RD in Kerby over Illinois River built?

It was built in 1926, making it 99 years old in 2025.

What condition is Finch RD in Kerby over Illinois River 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 October 2024.

How much traffic does Finch RD in Kerby over Illinois River carry?

About 273 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Finch RD in Kerby over Illinois River?

The structure is 364 ft (110.9 m) long with a longest span of 180 ft (54.9 m) and a deck 18 ft wide.

Who owns Finch RD in Kerby over Illinois River?

It is owned by the County Highway Agency.