US Bridges

San Pedro Ave over San Pedro Creek

Fair

San Mateo County, California · Pacifica · Structure no. 35C0156

Built
1996
29 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete Continuous
Length
137 ft
2 main spans
Daily traffic
4,500
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

San Pedro Ave over San Pedro Creek is a prestressed concrete continuous slab carrying San Pedro Ave over San Pedro Creek in San Mateo County, California. It was built in 1996, so it is 29 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 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 4,500 vehicles a day, roughly 5% of them trucks, projected to reach 5,221 by 2045. The structure is 137 ft (41.8 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSan Pedro Ave
CrossesSan Pedro Creek
LocationPacifica
RouteCity Street 0
CountySan Mateo County
StateCalifornia
Coordinates37.59494, -122.50531
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length137 ft (41.8 m)
Longest span70 ft (21.3 m)
Deck width41 ft (12.4 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2019)
Projected traffic5,221 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 San Pedro Ave over San Pedro Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is San Pedro Ave over San Pedro 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 May 2023.

How much traffic does San Pedro Ave over San Pedro Creek carry?

About 4,500 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is San Pedro Ave over San Pedro Creek?

The structure is 137 ft (41.8 m) long with a longest span of 70 ft (21.3 m) and a deck 41 ft wide.

Who owns San Pedro Ave over San Pedro Creek?

It is owned by the City or Municipal Highway Agency.