US Bridges

Scenic Ave over No Name Creek

Fair

Sonoma County, California · 0.1 MI W of S Moorland Av · Structure no. 20C0278

Built
1950
75 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
615
2018 count
Owner
County
County Highway Agency

About this bridge

Scenic Ave over No Name Creek is a concrete continuous culvert carrying Scenic Ave over No Name Creek in Sonoma 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 615 vehicles a day, roughly 1% of them trucks, projected to reach 780 by 2047. The structure is 22 ft (6.7 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesScenic Ave
CrossesNo Name Creek
Location0.1 MI W of S Moorland Av
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.37622, -122.71843
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width37 ft (11.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic615 (2018)
Projected traffic780 by 2047
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Scenic Ave over No Name Creek built?

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

What condition is Scenic Ave over No Name 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 February 2025.

How much traffic does Scenic Ave over No Name Creek carry?

About 615 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Scenic Ave over No Name Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 37 ft wide.

Who owns Scenic Ave over No Name Creek?

It is owned by the County Highway Agency.