US Bridges

Dryland RD (s) over Rock Creek

FairPosted for load

Clackamas County, Oregon · 01.0 MI N of HWY 213 · Structure no. 06143 000 00131

Built
1965
60 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
39 ft
2 main spans
Daily traffic
432
2020 count
Owner
County
County Highway Agency

About this bridge

Dryland RD (s) over Rock Creek is a wood or timber stringer/multi-beam or girder carrying Dryland RD (s) over Rock Creek in Clackamas County, Oregon. It was built in 1965, so it is 60 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 432 vehicles a day, roughly 21% of them trucks, projected to reach 437 by 2025. The structure is 39 ft (11.9 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesDryland RD (s)
CrossesRock Creek
Location01.0 MI N of HWY 213
RouteCounty Highway C0095
CountyClackamas County
StateOregon
Coordinates45.12031, -122.64958
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.2 US tons
Inventory rating17.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span20 ft (6.1 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic432 (2020)
Projected traffic437 by 2025
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Dryland RD (s) over Rock Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Dryland RD (s) 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 September 2024.

How much traffic does Dryland RD (s) over Rock Creek carry?

About 432 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is Dryland RD (s) over Rock Creek?

The structure is 39 ft (11.9 m) long with a longest span of 20 ft (6.1 m) and a deck 24 ft wide.

Who owns Dryland RD (s) over Rock Creek?

It is owned by the County Highway Agency.