US Bridges

Or 138 (hwy 138)EB over South Umpqua River

Fair

Douglas County, Oregon · 0.2 MI E. of I-5 · Structure no. 07016A000 00000

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
660 ft
3 main spans
Daily traffic
20,249
2022 count
Owner
State
State Highway Agency

About this bridge

Or 138 (hwy 138)EB over South Umpqua River is a prestressed concrete continuous stringer/multi-beam or girder carrying Or 138 (hwy 138)EB over South Umpqua River in Douglas County, Oregon. It was built in 1971, so it is 54 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 20,249 vehicles a day, roughly 5% of them trucks, projected to reach 23,100 by 2042. The structure is 660 ft (201.2 m) long and 41 ft wide.

Location

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CarriesOr 138 (hwy 138)EB
CrossesSouth Umpqua River
Location0.2 MI E. of I-5
RouteState Highway 138
CountyDouglas County
StateOregon
Coordinates43.21172, -123.35036
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length660 ft (201.2 m)
Longest span260 ft (79.2 m)
Deck width41 ft (12.5 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,249 (2022)
Projected traffic23,100 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 138)EB over South Umpqua River built?

It was built in 1971, making it 54 years old in 2025.

What condition is Or 138 (hwy 138)EB over South Umpqua River 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 2024.

How much traffic does Or 138 (hwy 138)EB over South Umpqua River carry?

About 20,249 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Or 138 (hwy 138)EB over South Umpqua River?

The structure is 660 ft (201.2 m) long with a longest span of 260 ft (79.2 m) and a deck 41 ft wide.

Who owns Or 138 (hwy 138)EB over South Umpqua River?

It is owned by the State Highway Agency.