US Bridges

Sconce Road over Rock Creek

FairPosted for load

Clackamas County, Oregon · .75 MI W of Barlow RD · Structure no. 06115 000 500

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
166 ft
9 main spans
Daily traffic
137
2020 count
Owner
County
County Highway Agency

About this bridge

Sconce Road over Rock Creek is a wood or timber stringer/multi-beam or girder carrying Sconce Road over Rock Creek in Clackamas County, Oregon. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.

It carries about 137 vehicles a day, roughly 1% of them trucks, projected to reach 151 by 2025. The structure is 166 ft (50.6 m) long and 18 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSconce Road
CrossesRock Creek
Location.75 MI W of Barlow RD
RouteCounty Highway C0625
CountyClackamas County
StateOregon
Coordinates45.15846, -122.73757
Functional classRural Local

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.
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.3 US tons
Inventory rating15 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans9
Design loadUnknown
Structure length166 ft (50.6 m)
Longest span17 ft (5.2 m)
Deck width18 ft (5.6 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic137 (2020)
Projected traffic151 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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$850,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Sconce Road over Rock Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Sconce Road over Rock Creek 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 April 2023.

How much traffic does Sconce Road over Rock Creek carry?

About 137 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Sconce Road over Rock Creek?

The structure is 166 ft (50.6 m) long with a longest span of 17 ft (5.2 m) and a deck 18 ft wide.

Who owns Sconce Road over Rock Creek?

It is owned by the County Highway Agency.