US Bridges

Meridian RD over Rock Creek

FairPosted for load

Clackamas County, Oregon · 03.2 MI S of HWY 211 · Structure no. 06523 000 00329

Built
1958
67 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
1 main span
Daily traffic
484
2020 count
Owner
County
County Highway Agency

About this bridge

Meridian RD over Rock Creek is a steel stringer/multi-beam or girder carrying Meridian RD over Rock Creek in Clackamas 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 fair condition with a lowest component rating of 5 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 484 vehicles a day, roughly 12% of them trucks, projected to reach 489 by 2025. The structure is 90 ft (27.4 m) long and 29 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesMeridian RD
CrossesRock Creek
Location03.2 MI S of HWY 211
RouteCounty Highway C1452
CountyClackamas County
StateOregon
Coordinates45.18839, -122.74409
Functional classRural Minor Collector

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.
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 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.2 US tons
Inventory rating17.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadUnknown
Structure length90 ft (27.4 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic484 (2020)
Projected traffic489 by 2025
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Meridian RD over Rock Creek built?

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

What condition is Meridian 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 April 2023.

How much traffic does Meridian RD over Rock Creek carry?

About 484 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is Meridian RD over Rock Creek?

The structure is 90 ft (27.4 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns Meridian RD over Rock Creek?

It is owned by the County Highway Agency.