US Bridges

Santa Rosa ST over San Luis Obispo Creek

Fair

San Luis Obispo County, California · 0.01 MI SE of Marsh ST · Structure no. 49C0368

Built
2000
25 years old
Condition
Fair
inspected October 2022
Type
Slab
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
6,976
2008 count
Owner
City
City or Municipal Highway Agency

About this bridge

Santa Rosa ST over San Luis Obispo Creek is a prestressed concrete slab carrying Santa Rosa ST over San Luis Obispo Creek in San Luis Obispo County, California. It was built in 2000, so it is 25 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 6,976 vehicles a day, roughly 3% of them trucks, projected to reach 8,899 by 2040. The structure is 55 ft (16.7 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSanta Rosa ST
CrossesSan Luis Obispo Creek
Location0.01 MI SE of Marsh ST
RouteCity Street 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.28071, -120.65824
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 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 alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length55 ft (16.7 m)
Longest span51 ft (15.4 m)
Deck width55 ft (16.8 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,976 (2008)
Projected traffic8,899 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Santa Rosa ST over San Luis Obispo Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Santa Rosa ST over San Luis Obispo 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 October 2022.

How much traffic does Santa Rosa ST over San Luis Obispo Creek carry?

About 6,976 vehicles per day (2008 count), of which roughly 3% are trucks.

How long is Santa Rosa ST over San Luis Obispo Creek?

The structure is 55 ft (16.7 m) long with a longest span of 51 ft (15.4 m) and a deck 55 ft wide.

Who owns Santa Rosa ST over San Luis Obispo Creek?

It is owned by the City or Municipal Highway Agency.