US Bridges

Negranti RD over Toro Creek

Fair

San Luis Obispo County, California · 2.5 MI NE of SR 1 · Structure no. 49C0244

Built
1965
60 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
58 ft
4 main spans
Daily traffic
30
2012 count
Owner
County
County Highway Agency

About this bridge

Negranti RD over Toro Creek is a wood or timber stringer/multi-beam or girder carrying Negranti RD over Toro Creek in San Luis Obispo County, California. It was built in 1965, so it is 60 years old, older 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 5 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 30 vehicles a day, roughly 2% of them trucks, projected to reach 41 by 2042. The structure is 58 ft (17.7 m) long and 18 ft wide. If it were closed, the detour would be 61.5 mi (99 km).

Location

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CarriesNegranti RD
CrossesToro Creek
Location2.5 MI NE of SR 1
RouteCounty Highway 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.43156, -120.83736
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 15
Structure length58 ft (17.7 m)
Longest span13 ft (4.1 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2012)
Projected traffic41 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Negranti RD over Toro Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Negranti RD over Toro 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 Negranti RD over Toro Creek carry?

About 30 vehicles per day (2012 count), of which roughly 2% are trucks.

How long is Negranti RD over Toro Creek?

The structure is 58 ft (17.7 m) long with a longest span of 13 ft (4.1 m) and a deck 18 ft wide.

Who owns Negranti RD over Toro Creek?

It is owned by the County Highway Agency.