US Bridges

County RD 167 over South Umpqua Overflow

Good

Douglas County, Oregon · 2.3 MI NW of Roseburg · Structure no. 19C507 167 060

Built
1963
62 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
441 ft
10 main spans
Daily traffic
7,879
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 167 over South Umpqua Overflow is a prestressed concrete stringer/multi-beam or girder carrying County RD 167 over South Umpqua Overflow in Douglas County, Oregon. It was built in 1963, so it is 62 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.

It carries about 7,879 vehicles a day, roughly 10% of them trucks, projected to reach 8,888 by 2025. The structure is 441 ft (134.4 m) long and 35 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesCounty RD 167
CrossesSouth Umpqua Overflow
Location2.3 MI NW of Roseburg
RouteCounty Highway 0A397
StateOregon
Coordinates43.24151, -123.40987
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
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 rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length441 ft (134.4 m)
Longest span44 ft (13.4 m)
Deck width35 ft (10.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,879 (2020)
Projected traffic8,888 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 167 over South Umpqua Overflow built?

It was built in 1963, making it 62 years old in 2025.

What condition is County RD 167 over South Umpqua Overflow 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 April 2023.

How much traffic does County RD 167 over South Umpqua Overflow carry?

About 7,879 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 167 over South Umpqua Overflow?

The structure is 441 ft (134.4 m) long with a longest span of 44 ft (13.4 m) and a deck 35 ft wide.

Who owns County RD 167 over South Umpqua Overflow?

It is owned by the County Highway Agency.