US Bridges

Hearst-Willits RD over Davis Creek

Fair

Mendocino County, California · 1.3 MI E SH 101 · Structure no. 10C0172

Built
1950
75 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
46 ft
1 main span
Daily traffic
1,648
2011 count
Owner
County
County Highway Agency

About this bridge

Hearst-Willits RD over Davis Creek is a concrete tee beam carrying Hearst-Willits RD over Davis Creek in Mendocino County, California. It was built in 1950, so it is 75 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 6 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 1,648 vehicles a day, roughly 2% of them trucks, projected to reach 2,268 by 2041. The structure is 46 ft (14 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesHearst-Willits RD
CrossesDavis Creek
Location1.3 MI E SH 101
RouteCounty Highway 0
CountyMendocino County
StateCalifornia
Coordinates39.41325, -123.32977
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating19.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length46 ft (14 m)
Longest span45 ft (13.7 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,648 (2011)
Projected traffic2,268 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Hearst-Willits RD over Davis Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Hearst-Willits RD over Davis 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 September 2023.

How much traffic does Hearst-Willits RD over Davis Creek carry?

About 1,648 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Hearst-Willits RD over Davis Creek?

The structure is 46 ft (14 m) long with a longest span of 45 ft (13.7 m) and a deck 28 ft wide.

Who owns Hearst-Willits RD over Davis Creek?

It is owned by the County Highway Agency.