US Bridges

Harbin Springs RD over Harbin Creek

Good

Lake County, California · 2.3 MI NW of Big Cyn RD · Structure no. 14C0112

Built
1930
95 years old, rebuilt 2003
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
152
2008 count
Owner
County
County Highway Agency

About this bridge

Harbin Springs RD over Harbin Creek is a steel stringer/multi-beam or girder carrying Harbin Springs RD over Harbin Creek in Lake County, California. It was built in 1930 and reconstructed in 2003, so it is 95 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 152 vehicles a day, roughly 1% of them trucks, projected to reach 221 by 2046. The structure is 22 ft (6.8 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHarbin Springs RD
CrossesHarbin Creek
Location2.3 MI NW of Big Cyn RD
RouteCounty Highway 0
Coordinates38.79052, -122.65606
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating76.1 US tons
Inventory rating45.3 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20 + Mod
Structure length22 ft (6.8 m)
Longest span22 ft (6.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic152 (2008)
Projected traffic221 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Harbin Springs RD over Harbin Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2003.

What condition is Harbin Springs RD over Harbin Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does Harbin Springs RD over Harbin Creek carry?

About 152 vehicles per day (2008 count), of which roughly 1% are trucks.

How long is Harbin Springs RD over Harbin Creek?

The structure is 22 ft (6.8 m) long with a longest span of 22 ft (6.8 m) and a deck 24 ft wide.

Who owns Harbin Springs RD over Harbin Creek?

It is owned by the County Highway Agency.