US Bridges

County RD 128 over Mid. Fork Coquille River

Fair

Douglas County, Oregon · 1.5 MI N of Camas Valley · Structure no. 19C258012800104

Built
1954
71 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
106 ft
3 main spans
Daily traffic
713
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 128 over Mid. Fork Coquille River is a steel continuous stringer/multi-beam or girder carrying County RD 128 over Mid. Fork Coquille River in Douglas County, Oregon. It was built in 1954, so it is 71 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 713 vehicles a day, roughly 5% of them trucks, projected to reach 808 by 2025. The structure is 106 ft (32.3 m) long and 22 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesCounty RD 128
CrossesMid. Fork Coquille River
Location1.5 MI N of Camas Valley
RouteCounty Highway C0128
CountyDouglas County
StateOregon
Coordinates43.04243, -123.68735
Functional classRural Minor Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length106 ft (32.3 m)
Longest span45 ft (13.7 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic713 (2020)
Projected traffic808 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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$543,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 128 over Mid. Fork Coquille River built?

It was built in 1954, making it 71 years old in 2025.

What condition is County RD 128 over Mid. Fork Coquille 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 2023.

How much traffic does County RD 128 over Mid. Fork Coquille River carry?

About 713 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is County RD 128 over Mid. Fork Coquille River?

The structure is 106 ft (32.3 m) long with a longest span of 45 ft (13.7 m) and a deck 22 ft wide.

Who owns County RD 128 over Mid. Fork Coquille River?

It is owned by the County Highway Agency.