US Bridges

Or 138 (hwy 138) over Steamboat Creek

Fair

Douglas County, Oregon · 38.7 MI E of HWY 99 · Structure no. 02737 073 03874

Built
1949
76 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
309 ft
4 main spans
Daily traffic
1,149
2022 count
Owner
State
State Highway Agency

About this bridge

Or 138 (hwy 138) over Steamboat Creek is a steel stringer/multi-beam or girder carrying Or 138 (hwy 138) over Steamboat Creek in Douglas County, Oregon. It was built in 1949, so it is 76 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 1,149 vehicles a day, roughly 21% of them trucks, projected to reach 1,200 by 2042. The structure is 309 ft (94.2 m) long and 39 ft wide. If it were closed, the detour would be 80.8 mi (130 km).

Location

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CarriesOr 138 (hwy 138)
CrossesSteamboat Creek
Location38.7 MI E of HWY 99
RouteState Highway 138
CountyDouglas County
StateOregon
Coordinates43.34532, -122.73629
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 rating32.5 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length309 ft (94.2 m)
Longest span80 ft (24.4 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,149 (2022)
Projected traffic1,200 by 2042
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed80.8 mi (130 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 138) over Steamboat Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is Or 138 (hwy 138) over Steamboat Creek 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) over Steamboat Creek carry?

About 1,149 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is Or 138 (hwy 138) over Steamboat Creek?

The structure is 309 ft (94.2 m) long with a longest span of 80 ft (24.4 m) and a deck 39 ft wide.

Who owns Or 138 (hwy 138) over Steamboat Creek?

It is owned by the State Highway Agency.