US Bridges

County RD 47 over Lookingglass Creek

PoorPosted for load

Douglas County, Oregon · 3.0 MI NW of Winston · Structure no. 19C191 47 446

Built
1958
67 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
322 ft
1 main span
Daily traffic
2,002
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 47 over Lookingglass Creek is a steel stringer/multi-beam or girder carrying County RD 47 over Lookingglass Creek in Douglas County, Oregon. It was built in 1958, so it is 67 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 2,002 vehicles a day, roughly 7% of them trucks, projected to reach 2,262 by 2025. The structure is 322 ft (98.1 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty RD 47
CrossesLookingglass Creek
Location3.0 MI NW of Winston
RouteCounty Highway 0A393
CountyDouglas County
StateOregon
Coordinates43.14529, -123.46409
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating9.3 US tons
Inventory rating7.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadH 20
Structure length322 ft (98.1 m)
Longest span80 ft (24.4 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,002 (2020)
Projected traffic2,262 by 2025
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 47 over Lookingglass Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is County RD 47 over Lookingglass Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

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

About 2,002 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is County RD 47 over Lookingglass Creek?

The structure is 322 ft (98.1 m) long with a longest span of 80 ft (24.4 m) and a deck 24 ft wide.

Who owns County RD 47 over Lookingglass Creek?

It is owned by the County Highway Agency.