US Bridges

Kilchis Forest RD over Kilchis River

Fair

Tillamook County, Oregon · 2.8 MI E of Bay City · Structure no. 20999 000 00000

Built
1960
65 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
2 main spans
Daily traffic
30
2010 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Kilchis Forest RD over Kilchis River is a steel stringer/multi-beam or girder carrying Kilchis Forest RD over Kilchis River in Tillamook 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 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 30 vehicles a day, roughly 1% of them trucks, projected to reach 36 by 2030. The structure is 120 ft (36.7 m) long and 14 ft wide.

Location

Open in Google Maps
CarriesKilchis Forest RD
CrossesKilchis River
Location2.8 MI E of Bay City
RouteState Lands Road 0
CountyTillamook County
StateOregon
Coordinates45.51919, -123.82865
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.
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 protection7 GoodSome minor problems.
Last inspectionJuly 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length120 ft (36.7 m)
Longest span80 ft (24.4 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (3.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2010)
Projected traffic36 by 2030
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Kilchis Forest RD over Kilchis River built?

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

What condition is Kilchis Forest RD over Kilchis River 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 Kilchis Forest RD over Kilchis River carry?

About 30 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Kilchis Forest RD over Kilchis River?

The structure is 120 ft (36.7 m) long with a longest span of 80 ft (24.4 m) and a deck 14 ft wide.

Who owns Kilchis Forest RD over Kilchis River?

It is owned by the State Park, Forest, or Reservation Agency.