US Bridges

Rose Anderson RD over Anderson Creek

Fair

Lake County, California · Anderson Springs RD · Structure no. 14C0075

Built
1945
80 years old, rebuilt 1997
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
104
2008 count
Owner
County
County Highway Agency

About this bridge

Rose Anderson RD over Anderson Creek is a steel stringer/multi-beam or girder carrying Rose Anderson RD over Anderson Creek in Lake County, California. It was built in 1945 and reconstructed in 1997, so it is 80 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 104 vehicles a day, roughly 1% of them trucks, projected to reach 168 by 2044. The structure is 31 ft (9.5 m) long and 15 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRose Anderson RD
CrossesAnderson Creek
LocationAnderson Springs RD
RouteCounty Highway 0
Coordinates38.77463, -122.70085
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating44 US tons
Inventory rating26.5 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length31 ft (9.5 m)
Longest span30 ft (9.1 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic104 (2008)
Projected traffic168 by 2044
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Rose Anderson RD over Anderson Creek built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1997.

What condition is Rose Anderson RD over Anderson 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 March 2024.

How much traffic does Rose Anderson RD over Anderson Creek carry?

About 104 vehicles per day (2008 count), of which roughly 1% are trucks.

How long is Rose Anderson RD over Anderson Creek?

The structure is 31 ft (9.5 m) long with a longest span of 30 ft (9.1 m) and a deck 15 ft wide.

Who owns Rose Anderson RD over Anderson Creek?

It is owned by the County Highway Agency.