US Bridges

Finch Road over Illinois River Overflow

FairPosted for load

Josephine County, Oregon · T39S-R8W-S9 · Structure no. 531520531500053

Built
1950
75 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
585
2020 count
Owner
County
County Highway Agency

About this bridge

Finch Road over Illinois River Overflow is a concrete culvert carrying Finch Road over Illinois River Overflow in Josephine County, Oregon. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 585 vehicles a day, roughly 10% of them trucks, projected to reach 681 by 2025. The structure is 20 ft (6.1 m) long and 25 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

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CarriesFinch Road
CrossesIllinois River Overflow
LocationT39S-R8W-S9
RouteCounty Highway C5315
CountyJosephine County
StateOregon
Coordinates42.19346, -123.66296
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating27.9 US tons
Inventory rating21.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic585 (2020)
Projected traffic681 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 Road over Illinois River Overflow built?

It was built in 1950, making it 75 years old in 2025.

What condition is Finch Road over Illinois River Overflow 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 Road over Illinois River Overflow carry?

About 585 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Finch Road over Illinois River Overflow?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.

Who owns Finch Road over Illinois River Overflow?

It is owned by the County Highway Agency.