US Bridges

County RD 6 over Calapooya Cr/Calapooya

Fair

Douglas County, Oregon · 0.3 MI W of Umpqua Store · Structure no. 19C350 6 1410

Built
1986
39 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
226 ft
2 main spans
Daily traffic
1,596
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 6 over Calapooya Cr/Calapooya is a prestressed concrete stringer/multi-beam or girder carrying County RD 6 over Calapooya Cr/Calapooya in Douglas County, Oregon. It was built in 1986, so it is 39 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 1,596 vehicles a day, roughly 10% of them trucks, projected to reach 1,806 by 2025. The structure is 226 ft (68.9 m) long and 39 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCounty RD 6
CrossesCalapooya Cr/Calapooya
Location0.3 MI W of Umpqua Store
RouteCounty Highway 0A401
CountyDouglas County
StateOregon
Coordinates43.36655, -123.46074
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length226 ft (68.9 m)
Longest span110 ft (33.5 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,596 (2020)
Projected traffic1,806 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 County RD 6 over Calapooya Cr/Calapooya built?

It was built in 1986, making it 39 years old in 2025.

What condition is County RD 6 over Calapooya Cr/Calapooya 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 County RD 6 over Calapooya Cr/Calapooya carry?

About 1,596 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 6 over Calapooya Cr/Calapooya?

The structure is 226 ft (68.9 m) long with a longest span of 110 ft (33.5 m) and a deck 39 ft wide.

Who owns County RD 6 over Calapooya Cr/Calapooya?

It is owned by the County Highway Agency.