US Bridges

West End Road over Warren Creek

Fair

Humboldt County, California · 0.2 MI S Warren Creek RD · Structure no. 04C0206

Built
1927
98 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
30 ft
1 main span
Daily traffic
472
2011 count
Owner
County
County Highway Agency

About this bridge

West End Road over Warren Creek is a concrete tee beam carrying West End Road over Warren Creek in Humboldt County, California. It was built in 1927, so it is 98 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 472 vehicles a day, roughly 3% of them trucks, projected to reach 500 by 2041. The structure is 30 ft (9.1 m) long and 21 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesWest End Road
CrossesWarren Creek
Location0.2 MI S Warren Creek RD
RouteCounty Highway 0
CountyHumboldt County
StateCalifornia
Coordinates40.90122, -124.04675
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.7 US tons
Inventory rating24.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic472 (2011)
Projected traffic500 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 West End Road over Warren Creek built?

It was built in 1927, making it 98 years old in 2025.

What condition is West End Road over Warren 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 October 2023.

How much traffic does West End Road over Warren Creek carry?

About 472 vehicles per day (2011 count), of which roughly 3% are trucks.

How long is West End Road over Warren Creek?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 21 ft wide.

Who owns West End Road over Warren Creek?

It is owned by the County Highway Agency.