US Bridges

Austin Creek RD over No Name Creek

Fair

Sonoma County, California · At Berkley Camp · Structure no. 20C0423

Built
1964
61 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
200
2015 count
Owner
County
County Highway Agency

About this bridge

Austin Creek RD over No Name Creek is a steel stringer/multi-beam or girder carrying Austin Creek RD over No Name Creek in Sonoma County, California. It was built in 1964, so it is 61 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 200 vehicles a day, projected to reach 255 by 2046. The structure is 53 ft (16.2 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAustin Creek RD
CrossesNo Name Creek
LocationAt Berkley Camp
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.52332, -123.08931
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span50 ft (15.2 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2015)
Projected traffic255 by 2046
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Austin Creek RD over No Name Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Austin Creek RD 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 June 2024.

How much traffic does Austin Creek RD over No Name Creek carry?

About 200 vehicles per day (2015 count).

How long is Austin Creek RD over No Name Creek?

The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 16 ft wide.

Who owns Austin Creek RD over No Name Creek?

It is owned by the County Highway Agency.