US Bridges

County RD 388 over Sutherlin Creek

FairPosted for load

Douglas County, Oregon · In Sutherlin · Structure no. 19C451 388 431

Built
1921
104 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
44 ft
2 main spans
Daily traffic
6,589
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 388 over Sutherlin Creek is a concrete continuous tee beam carrying County RD 388 over Sutherlin Creek in Douglas County, Oregon. It was built in 1921, so it is 104 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 6,589 vehicles a day, roughly 5% of them trucks, projected to reach 7,339 by 2025. The structure is 44 ft (13.4 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty RD 388
CrossesSutherlin Creek
LocationIn Sutherlin
RouteCounty Highway 0A411
CountyDouglas County
StateOregon
Coordinates43.38842, -123.31471
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating16.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length44 ft (13.4 m)
Longest span22 ft (6.7 m)
Deck width36 ft (10.9 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,589 (2020)
Projected traffic7,339 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 388 over Sutherlin Creek built?

It was built in 1921, making it 104 years old in 2025.

What condition is County RD 388 over Sutherlin 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 April 2024.

How much traffic does County RD 388 over Sutherlin Creek carry?

About 6,589 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is County RD 388 over Sutherlin Creek?

The structure is 44 ft (13.4 m) long with a longest span of 22 ft (6.7 m) and a deck 36 ft wide.

Who owns County RD 388 over Sutherlin Creek?

It is owned by the County Highway Agency.