US Bridges

Finch RD in Kerby over Kerby Slough

GoodPosted for load

Josephine County, Oregon · T39S-R8W-S9 Josephine CO · Structure no. 531510531500033

Built
1951
74 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
1 main span
Daily traffic
501
2020 count
Owner
County
County Highway Agency

About this bridge

Finch RD in Kerby over Kerby Slough is a wood or timber stringer/multi-beam or girder carrying Finch RD in Kerby over Kerby Slough in Josephine County, Oregon. It was built in 1951, so it is 74 years old, older 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. Its operating status is: posted for load restriction.

It carries about 501 vehicles a day, roughly 10% of them trucks, projected to reach 583 by 2025. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

CarriesFinch RD in Kerby
CrossesKerby Slough
LocationT39S-R8W-S9 Josephine CO
RouteCounty Highway C5315
StateOregon
Coordinates42.1942, -123.6568
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.4 US tons
Inventory rating16.4 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span37 ft (11.3 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic501 (2020)
Projected traffic583 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Finch RD in Kerby over Kerby Slough built?

It was built in 1951, making it 74 years old in 2025.

What condition is Finch RD in Kerby over Kerby Slough 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 October 2024.

How much traffic does Finch RD in Kerby over Kerby Slough carry?

About 501 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Finch RD in Kerby over Kerby Slough?

The structure is 40 ft (12.2 m) long with a longest span of 37 ft (11.3 m) and a deck 24 ft wide.

Who owns Finch RD in Kerby over Kerby Slough?

It is owned by the County Highway Agency.