US Bridges

Coalman RD over Cedar Creek

Fair

Clackamas County, Oregon · 00.6 MI E of Ten Eyck RD · Structure no. 06360 000 00055

Built
1960
65 years old
Condition
Fair
inspected July 2024
Type
Channel Beam
Concrete
Length
32 ft
1 main span
Daily traffic
1,339
2020 count
Owner
County
County Highway Agency

About this bridge

Coalman RD over Cedar Creek is a concrete channel beam carrying Coalman RD over Cedar Creek in Clackamas County, Oregon. It was built in 1960, so it is 65 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.

It carries about 1,339 vehicles a day, roughly 14% of them trucks, projected to reach 1,359 by 2025. The structure is 32 ft (9.8 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCoalman RD
CrossesCedar Creek
Location00.6 MI E of Ten Eyck RD
RouteCounty Highway C1191
StateOregon
Coordinates45.39726, -122.23497
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating35.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,339 (2020)
Projected traffic1,359 by 2025
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Coalman RD over Cedar Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Coalman RD over Cedar 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 Coalman RD over Cedar Creek carry?

About 1,339 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is Coalman RD over Cedar Creek?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 26 ft wide.

Who owns Coalman RD over Cedar Creek?

It is owned by the County Highway Agency.