US Bridges

Santa Rosa CR RD over Santa Rosa Creek

Good

San Luis Obispo County, California · 3.0 MI W Cypress Mtn DR · Structure no. 49C0344

Built
1947
78 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete
Length
35 ft
1 main span
Daily traffic
128
2006 count
Owner
County
County Highway Agency

About this bridge

Santa Rosa CR RD over Santa Rosa Creek is a concrete slab carrying Santa Rosa CR RD over Santa Rosa Creek in San Luis Obispo County, California. It was built in 1947, so it is 78 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 128 vehicles a day, roughly 1% of them trucks, projected to reach 512 by 2046. The structure is 35 ft (10.7 m) long and 31 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesSanta Rosa CR RD
CrossesSanta Rosa Creek
Location3.0 MI W Cypress Mtn DR
RouteCounty Highway 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.56282, -120.94366
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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating23.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length35 ft (10.7 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic128 (2006)
Projected traffic512 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 Santa Rosa CR RD over Santa Rosa Creek built?

It was built in 1947, making it 78 years old in 2025.

What condition is Santa Rosa CR RD over Santa Rosa 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 April 2024.

How much traffic does Santa Rosa CR RD over Santa Rosa Creek carry?

About 128 vehicles per day (2006 count), of which roughly 1% are trucks.

How long is Santa Rosa CR RD over Santa Rosa Creek?

The structure is 35 ft (10.7 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns Santa Rosa CR RD over Santa Rosa Creek?

It is owned by the County Highway Agency.