US Bridges

County RD 107A over River Overflow-Drainage

Fair

Douglas County, Oregon · 0.2 MI NE of Winston · Structure no. 18654 107A00014

Built
1999
26 years old
Condition
Fair
inspected July 2023
Type
Culvert
Steel
Length
28 ft
4 main spans
Daily traffic
571
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 107A over River Overflow-Drainage is a steel culvert carrying County RD 107A over River Overflow-Drainage in Douglas County, Oregon. It was built in 1999, so it is 26 years old, younger 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.

It carries about 571 vehicles a day, roughly 5% of them trucks, projected to reach 646 by 2025. The structure is 28 ft (8.5 m) long and 50 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCounty RD 107A
CrossesRiver Overflow-Drainage
Location0.2 MI NE of Winston
RouteCounty Highway C107A
CountyDouglas County
StateOregon
Coordinates43.12722, -123.40039
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.7 US tons
Inventory rating72.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckWood or timber
Main spans4
Design loadHS 25 or greater
Structure length28 ft (8.5 m)
Longest span5 ft (1.5 m)
Deck width50 ft (15.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic571 (2020)
Projected traffic646 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed0.6 mi (1 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$143,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 107A over River Overflow-Drainage built?

It was built in 1999, making it 26 years old in 2025.

What condition is County RD 107A over River Overflow-Drainage 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 107A over River Overflow-Drainage carry?

About 571 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is County RD 107A over River Overflow-Drainage?

The structure is 28 ft (8.5 m) long with a longest span of 5 ft (1.5 m) and a deck 50 ft wide.

Who owns County RD 107A over River Overflow-Drainage?

It is owned by the County Highway Agency.