US Bridges

State Route 92 over Pilarcitos Creek

Good

San Mateo County, California · 04-SM-092-3.30 · Structure no. 35 0015

Built
1965
60 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
75 ft
4 main spans
Daily traffic
23,300
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 92 over Pilarcitos Creek is a concrete continuous slab carrying State Route 92 over Pilarcitos Creek in San Mateo 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 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 23,300 vehicles a day, roughly 4% of them trucks, projected to reach 49,101 by 2044. The structure is 75 ft (22.9 m) long and 34 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesState Route 92
CrossesPilarcitos Creek
Location04-SM-092-3.30
RouteState Highway 92
Coordinates37.49249, -122.38516
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,300 (2009)
Projected traffic49,101 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 92 over Pilarcitos Creek built?

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

What condition is State Route 92 over Pilarcitos 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 State Route 92 over Pilarcitos Creek carry?

About 23,300 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is State Route 92 over Pilarcitos Creek?

The structure is 75 ft (22.9 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns State Route 92 over Pilarcitos Creek?

It is owned by the State Highway Agency.