US Bridges

Las Pilitas RD over Pilitas Creek

Good

San Luis Obispo County, California · 2.4 MI E Santa Marg RD · Structure no. 49C0191

Built
1930
95 years old, rebuilt 1954
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
31 ft
2 main spans
Daily traffic
189
2018 count
Owner
County
County Highway Agency

About this bridge

Las Pilitas RD over Pilitas Creek is a steel continuous stringer/multi-beam or girder carrying Las Pilitas RD over Pilitas Creek in San Luis Obispo County, California. It was built in 1930 and reconstructed in 1954, so it is 95 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 189 vehicles a day, roughly 2% of them trucks, projected to reach 575 by 2044. The structure is 31 ft (9.4 m) long and 19 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesLas Pilitas RD
CrossesPilitas Creek
Location2.4 MI E Santa Marg RD
RouteCounty Highway 0
Coordinates35.34947, -120.5021
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating44.3 US tons
Inventory rating26.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length31 ft (9.4 m)
Longest span14 ft (4.3 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic189 (2018)
Projected traffic575 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Las Pilitas RD over Pilitas Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1954.

What condition is Las Pilitas RD over Pilitas 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 2024.

How much traffic does Las Pilitas RD over Pilitas Creek carry?

About 189 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Las Pilitas RD over Pilitas Creek?

The structure is 31 ft (9.4 m) long with a longest span of 14 ft (4.3 m) and a deck 19 ft wide.

Who owns Las Pilitas RD over Pilitas Creek?

It is owned by the County Highway Agency.