US Bridges

Or 138 (hwy 231) over Umpqua River (kellog Br)

Fair

Douglas County, Oregon · 063 MI S Elkton · Structure no. 03451A231 00630

Built
1962
63 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
810 ft
4 main spans
Daily traffic
1,626
2022 count
Owner
State
State Highway Agency

About this bridge

Or 138 (hwy 231) over Umpqua River (kellog Br) is a steel continuous stringer/multi-beam or girder carrying Or 138 (hwy 231) over Umpqua River (kellog Br) in Douglas County, Oregon. It was built in 1962, so it is 63 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 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 1,626 vehicles a day, roughly 19% of them trucks, projected to reach 1,800 by 2042. The structure is 810 ft (246.9 m) long and 31 ft wide. If it were closed, the detour would be 22.4 mi (36 km).

Location

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CarriesOr 138 (hwy 231)
CrossesUmpqua River (kellog Br)
Location063 MI S Elkton
RouteState Highway 138
CountyDouglas County
StateOregon
Coordinates43.55439, -123.55375
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating23.3 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+4 approach)
Design loadHS 20
Structure length810 ft (246.9 m)
Longest span200 ft (61 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,626 (2022)
Projected traffic1,800 by 2042
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed22.4 mi (36 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Or 138 (hwy 231) over Umpqua River (kellog Br) built?

It was built in 1962, making it 63 years old in 2025.

What condition is Or 138 (hwy 231) over Umpqua River (kellog Br) 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 February 2024.

How much traffic does Or 138 (hwy 231) over Umpqua River (kellog Br) carry?

About 1,626 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is Or 138 (hwy 231) over Umpqua River (kellog Br)?

The structure is 810 ft (246.9 m) long with a longest span of 200 ft (61 m) and a deck 31 ft wide.

Who owns Or 138 (hwy 231) over Umpqua River (kellog Br)?

It is owned by the State Highway Agency.