US Bridges

County RD 386 over Myrtle Creek

Fair

Douglas County, Oregon · In Myrtle Creek @ Dq · Structure no. 19C514 386 089

Built
1930
95 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
122 ft
3 main spans
Daily traffic
15,228
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 386 over Myrtle Creek is a concrete continuous tee beam carrying County RD 386 over Myrtle Creek in Douglas County, Oregon. It was built in 1930, so it is 95 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.

It carries about 15,228 vehicles a day, roughly 7% of them trucks, projected to reach 21,014 by 2025. The structure is 122 ft (37.2 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty RD 386
CrossesMyrtle Creek
LocationIn Myrtle Creek @ Dq
RouteCounty Highway 0A414
CountyDouglas County
StateOregon
Coordinates43.02382, -123.28825
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length122 ft (37.2 m)
Longest span60 ft (18.3 m)
Deck width36 ft (11.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,228 (2020)
Projected traffic21,014 by 2025
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$625,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 386 over Myrtle Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is County RD 386 over Myrtle 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 2023.

How much traffic does County RD 386 over Myrtle Creek carry?

About 15,228 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is County RD 386 over Myrtle Creek?

The structure is 122 ft (37.2 m) long with a longest span of 60 ft (18.3 m) and a deck 36 ft wide.

Who owns County RD 386 over Myrtle Creek?

It is owned by the County Highway Agency.