US Bridges

Ferrasci Road over Santa Rosa Creek

Good

San Luis Obispo County, California · .1 MI E. of S.Rosa Crk RD · Structure no. 49C0455

Built
2011
14 years old
Condition
Good
inspected August 2022
Type
Box Beam or Girders - Multiple
Concrete
Length
95 ft
1 main span
Daily traffic
150
2012 count
Owner
County
County Highway Agency

About this bridge

Ferrasci Road over Santa Rosa Creek is a concrete box beam or girders - multiple carrying Ferrasci Road over Santa Rosa Creek in San Luis Obispo County, California. It was built in 2011, so it is 14 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 208 by 2044. The structure is 95 ft (29 m) long and 25 ft wide. If it were closed, the detour would be 61.5 mi (99 km).

Location

Open in Google Maps
CarriesFerrasci Road
CrossesSanta Rosa Creek
Location.1 MI E. of S.Rosa Crk RD
RouteCounty Highway 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.56816, -121.06512
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 protection9 ExcellentNo 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length95 ft (29 m)
Longest span95 ft (29 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2012)
Projected traffic208 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed61.5 mi (99 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 Ferrasci Road over Santa Rosa Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Ferrasci Road 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 August 2022.

How much traffic does Ferrasci Road over Santa Rosa Creek carry?

About 150 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Ferrasci Road over Santa Rosa Creek?

The structure is 95 ft (29 m) long with a longest span of 95 ft (29 m) and a deck 25 ft wide.

Who owns Ferrasci Road over Santa Rosa Creek?

It is owned by the County Highway Agency.