US Bridges

Cullaby Lake RD over Cullaby Creek

Fair

Clatsop County, Oregon · At Carnahan Park · Structure no. 011228100600038

Built
1964
61 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
38 ft
2 main spans
Daily traffic
163
2020 count
Owner
County
County Highway Agency

About this bridge

Cullaby Lake RD over Cullaby Creek is a wood or timber stringer/multi-beam or girder carrying Cullaby Lake RD over Cullaby Creek in Clatsop County, Oregon. It was built in 1964, so it is 61 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.

It carries about 163 vehicles a day, roughly 10% of them trucks, projected to reach 190 by 2025. The structure is 38 ft (11.6 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCullaby Lake RD
CrossesCullaby Creek
LocationAt Carnahan Park
RouteCounty Highway C1006
CountyClatsop County
StateOregon
Coordinates46.09441, -123.90891
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span18 ft (5.5 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic163 (2020)
Projected traffic190 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$195,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cullaby Lake RD over Cullaby Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Cullaby Lake RD over Cullaby 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 Cullaby Lake RD over Cullaby Creek carry?

About 163 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Cullaby Lake RD over Cullaby Creek?

The structure is 38 ft (11.6 m) long with a longest span of 18 ft (5.5 m) and a deck 20 ft wide.

Who owns Cullaby Lake RD over Cullaby Creek?

It is owned by the County Highway Agency.