US Bridges

County RD 47 over Lookingglass Creek

Good

Douglas County, Oregon · 2.3 MI W of Winston · Structure no. 22389 047 00364

Built
2017
8 years old
Condition
Good
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
284 ft
3 main spans
Daily traffic
2,119
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 47 over Lookingglass Creek is a prestressed concrete tee beam carrying County RD 47 over Lookingglass Creek in Douglas County, Oregon. It was built in 2017, so it is 8 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,119 vehicles a day, roughly 7% of them trucks, projected to reach 2,439 by 2025. The structure is 284 ft (86.6 m) long and 39 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCounty RD 47
CrossesLookingglass Creek
Location2.3 MI W of Winston
RouteCounty Highway 0A393
CountyDouglas County
StateOregon
Coordinates43.13378, -123.46108
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating34.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length284 ft (86.6 m)
Longest span135 ft (41.1 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,119 (2020)
Projected traffic2,439 by 2025
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 47 over Lookingglass Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is County RD 47 over Lookingglass Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does County RD 47 over Lookingglass Creek carry?

About 2,119 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is County RD 47 over Lookingglass Creek?

The structure is 284 ft (86.6 m) long with a longest span of 135 ft (41.1 m) and a deck 39 ft wide.

Who owns County RD 47 over Lookingglass Creek?

It is owned by the County Highway Agency.