US Bridges

Anderson Springs R over Anderson Creek

Fair

Lake County, California · 0.8 MI W of SR 175 · Structure no. 14C0074

Built
1940
85 years old, rebuilt 1997
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
154
2008 count
Owner
County
County Highway Agency

About this bridge

Anderson Springs R over Anderson Creek is a steel stringer/multi-beam or girder carrying Anderson Springs R over Anderson Creek in Lake County, California. It was built in 1940 and reconstructed in 1997, so it is 85 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 154 vehicles a day, roughly 1% of them trucks, projected to reach 220 by 2044. The structure is 23 ft (7 m) long and 17 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAnderson Springs R
CrossesAnderson Creek
Location0.8 MI W of SR 175
RouteCounty Highway 0
Coordinates38.77421, -122.69278
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width17 ft (5.3 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic154 (2008)
Projected traffic220 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 Anderson Springs R over Anderson Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1997.

What condition is Anderson Springs R 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 Anderson Springs R over Anderson Creek carry?

About 154 vehicles per day (2008 count), of which roughly 1% are trucks.

How long is Anderson Springs R over Anderson Creek?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 17 ft wide.

Who owns Anderson Springs R over Anderson Creek?

It is owned by the County Highway Agency.