US Bridges

Still Creek RD over Still Creek

FairPosted for load

Clackamas County, Oregon · 00.25 MI S of HWY 26 · Structure no. 05C04 000

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
60 ft
1 main span
Daily traffic
107
2020 count
Owner
County
County Highway Agency

About this bridge

Still Creek RD over Still Creek is a wood or timber stringer/multi-beam or girder carrying Still Creek RD over Still Creek in Clackamas County, Oregon. It was built in 1971, so it is 54 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 107 vehicles a day, roughly 1% of them trucks, projected to reach 115 by 2025. The structure is 60 ft (18.3 m) long and 20 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesStill Creek RD
CrossesStill Creek
Location00.25 MI S of HWY 26
RouteCounty Highway C1146
StateOregon
Coordinates45.33033, -121.91556
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating18.2 US tons
Inventory rating13.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic107 (2020)
Projected traffic115 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Still Creek RD over Still Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Still Creek RD over Still 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 July 2024.

How much traffic does Still Creek RD over Still Creek carry?

About 107 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Still Creek RD over Still Creek?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 20 ft wide.

Who owns Still Creek RD over Still Creek?

It is owned by the County Highway Agency.