US Bridges

County RD 20 over S Fk Coquille R

Fair

Coos County, Oregon · 003 MI W Broabbent Store · Structure no. 05066A002000026

Built
1968
57 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
293 ft
1 main span
Daily traffic
384
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 20 over S Fk Coquille R is a prestressed concrete stringer/multi-beam or girder carrying County RD 20 over S Fk Coquille R in Coos County, Oregon. It was built in 1968, so it is 57 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 384 vehicles a day, roughly 25% of them trucks, projected to reach 434 by 2025. The structure is 293 ft (89.3 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty RD 20
CrossesS Fk Coquille R
Location003 MI W Broabbent Store
RouteCounty Highway 0A418
CountyCoos County
StateOregon
Coordinates43.00833, -124.15059
Functional classRural Major 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length293 ft (89.3 m)
Longest span140 ft (42.7 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic384 (2020)
Projected traffic434 by 2025
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 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 County RD 20 over S Fk Coquille R built?

It was built in 1968, making it 57 years old in 2025.

What condition is County RD 20 over S Fk Coquille R 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 September 2024.

How much traffic does County RD 20 over S Fk Coquille R carry?

About 384 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is County RD 20 over S Fk Coquille R?

The structure is 293 ft (89.3 m) long with a longest span of 140 ft (42.7 m) and a deck 35 ft wide.

Who owns County RD 20 over S Fk Coquille R?

It is owned by the County Highway Agency.