US Bridges

County RD 47 over W Fk Millicoma

Fair

Coos County, Oregon · 0485 West of Allegany Sto · Structure no. 11C20 004700485

Built
1961
64 years old, rebuilt 1983
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
149 ft
1 main span
Daily traffic
334
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 47 over W Fk Millicoma is a prestressed concrete box beam or girders - multiple carrying County RD 47 over W Fk Millicoma in Coos County, Oregon. It was built in 1961 and reconstructed in 1983, so it is 64 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 334 vehicles a day, roughly 5% of them trucks, projected to reach 379 by 2025. The structure is 149 ft (45.4 m) long and 20 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesCounty RD 47
CrossesW Fk Millicoma
Location0485 West of Allegany Sto
RouteCounty Highway C0047
CountyCoos County
StateOregon
Coordinates43.47665, -124.05666
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.
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 inspectionSeptember 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1 (+2 approach)
Design loadHS 20
Structure length149 ft (45.4 m)
Longest span81 ft (24.7 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic334 (2020)
Projected traffic379 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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$763,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 47 over W Fk Millicoma built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1983.

What condition is County RD 47 over W Fk Millicoma 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 47 over W Fk Millicoma carry?

About 334 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is County RD 47 over W Fk Millicoma?

The structure is 149 ft (45.4 m) long with a longest span of 81 ft (24.7 m) and a deck 20 ft wide.

Who owns County RD 47 over W Fk Millicoma?

It is owned by the County Highway Agency.