US Bridges

Clover RD over Willits Creek

Fair

Mendocino County, California · 0.02 MI S Birch ST · Structure no. 10C0184

Built
1967
58 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
850
2011 count
Owner
County
County Highway Agency

About this bridge

Clover RD over Willits Creek is a steel stringer/multi-beam or girder carrying Clover RD over Willits Creek in Mendocino County, California. It was built in 1967, so it is 58 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 850 vehicles a day, roughly 2% of them trucks, projected to reach 955 by 2046. The structure is 51 ft (15.4 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesClover RD
CrossesWillits Creek
Location0.02 MI S Birch ST
RouteCounty Highway 0
CountyMendocino County
StateCalifornia
Coordinates39.43624, -123.38452
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating34.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length51 ft (15.4 m)
Longest span48 ft (14.7 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2011)
Projected traffic955 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Clover RD over Willits Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Clover RD over Willits 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 August 2024.

How much traffic does Clover RD over Willits Creek carry?

About 850 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Clover RD over Willits Creek?

The structure is 51 ft (15.4 m) long with a longest span of 48 ft (14.7 m) and a deck 29 ft wide.

Who owns Clover RD over Willits Creek?

It is owned by the County Highway Agency.