US Bridges

Country Club RD over Trinity River

Fair

Humboldt County, California · In Willow Creek · Structure no. 04C0032

Built
1957
68 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
512 ft
4 main spans
Daily traffic
2,947
2009 count
Owner
County
County Highway Agency

About this bridge

Country Club RD over Trinity River is a steel continuous stringer/multi-beam or girder carrying Country Club RD over Trinity River in Humboldt County, California. It was built in 1957, so it is 68 years old, older than the California average of 54.8 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 2,947 vehicles a day, roughly 5% of them trucks, projected to reach 2,180 by 2041. The structure is 512 ft (156.1 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCountry Club RD
CrossesTrinity River
LocationIn Willow Creek
RouteCounty Highway 0
CountyHumboldt County
StateCalifornia
Coordinates40.94525, -123.62366
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating38.9 US tons
Inventory rating23.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length512 ft (156.1 m)
Longest span153 ft (46.5 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,947 (2009)
Projected traffic2,180 by 2041
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Country Club RD over Trinity River built?

It was built in 1957, making it 68 years old in 2025.

What condition is Country Club RD over Trinity 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 October 2023.

How much traffic does Country Club RD over Trinity River carry?

About 2,947 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is Country Club RD over Trinity River?

The structure is 512 ft (156.1 m) long with a longest span of 153 ft (46.5 m) and a deck 27 ft wide.

Who owns Country Club RD over Trinity River?

It is owned by the County Highway Agency.