US Bridges

Indian Valley RD over Vineyard Creek

Good

San Luis Obispo County, California · 1.91 MI N of Cross Cyn RD · Structure no. 49C0210

Built
1980
45 years old
Condition
Good
inspected August 2022
Type
Slab
Concrete Continuous
Length
111 ft
3 main spans
Daily traffic
631
2007 count
Owner
County
County Highway Agency

About this bridge

Indian Valley RD over Vineyard Creek is a concrete continuous slab carrying Indian Valley RD over Vineyard Creek in San Luis Obispo County, California. It was built in 1980, so it is 45 years old, younger 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 631 vehicles a day, roughly 3% of them trucks, projected to reach 298 by 2040. The structure is 111 ft (33.8 m) long and 29 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesIndian Valley RD
CrossesVineyard Creek
Location1.91 MI N of Cross Cyn RD
RouteCounty Highway 0
Coordinates35.77805, -120.69982
Functional classRural Minor Collector

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length111 ft (33.8 m)
Longest span36 ft (11 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic631 (2007)
Projected traffic298 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Indian Valley RD over Vineyard Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Indian Valley RD over Vineyard 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 August 2022.

How much traffic does Indian Valley RD over Vineyard Creek carry?

About 631 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is Indian Valley RD over Vineyard Creek?

The structure is 111 ft (33.8 m) long with a longest span of 36 ft (11 m) and a deck 29 ft wide.

Who owns Indian Valley RD over Vineyard Creek?

It is owned by the County Highway Agency.