US Bridges

Sunnyside RD over Rock Creek

Fair

Clackamas County, Oregon · E of I-205 · Structure no. 20532 000 00000

Built
2009
16 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
146 ft
1 main span
Daily traffic
20,445
2020 count
Owner
County
County Highway Agency

About this bridge

Sunnyside RD over Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying Sunnyside RD over Rock Creek in Clackamas County, Oregon. It was built in 2009, so it is 16 years old, younger 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.

It carries about 20,445 vehicles a day, roughly 5% of them trucks, projected to reach 27,460 by 2025. The structure is 146 ft (44.5 m) long and 111 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSunnyside RD
CrossesRock Creek
LocationE of I-205
RouteCounty Highway 0
CountyClackamas County
StateOregon
Coordinates45.42724, -122.4928
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.5 US tons
Inventory rating74.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length146 ft (44.5 m)
Longest span142 ft (43.3 m)
Deck width111 ft (33.8 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,445 (2020)
Projected traffic27,460 by 2025
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sunnyside RD over Rock Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is Sunnyside RD 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 May 2023.

How much traffic does Sunnyside RD over Rock Creek carry?

About 20,445 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Sunnyside RD over Rock Creek?

The structure is 146 ft (44.5 m) long with a longest span of 142 ft (43.3 m) and a deck 111 ft wide.

Who owns Sunnyside RD over Rock Creek?

It is owned by the County Highway Agency.