US Bridges

Cypress Mountain over Branch Las Tablas Creek

Fair

San Luis Obispo County, California · 1.3 Mi. NW Klau Mine RD · Structure no. 49C0468

Built
1996
29 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
200
2013 count
Owner
County
County Highway Agency

About this bridge

Cypress Mountain over Branch Las Tablas Creek is a concrete culvert carrying Cypress Mountain over Branch Las Tablas Creek in San Luis Obispo County, California. It was built in 1996, so it is 29 years old, younger 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 200 vehicles a day, roughly 3% of them trucks, projected to reach 225 by 2046. The structure is 24 ft (7.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCypress Mountain
CrossesBranch Las Tablas Creek
Location1.3 Mi. NW Klau Mine RD
RouteCounty Highway 0
Coordinates35.63666, -120.91521
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.2 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2013)
Projected traffic225 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Cypress Mountain over Branch Las Tablas Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Cypress Mountain over Branch Las Tablas 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 April 2024.

How much traffic does Cypress Mountain over Branch Las Tablas Creek carry?

About 200 vehicles per day (2013 count), of which roughly 3% are trucks.

How long is Cypress Mountain over Branch Las Tablas Creek?

The structure is 24 ft (7.2 m) long with a longest span of 11 ft (3.3 m).

Who owns Cypress Mountain over Branch Las Tablas Creek?

It is owned by the County Highway Agency.