US Bridges

Junipero Serra Bld over San Francisquito Creek

Fair

Santa Clara County, California · East of Alpine Road · Structure no. 37C0346

Built
1989
36 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
221 ft
3 main spans
Daily traffic
20,000
2015 count
Owner
County
County Highway Agency

About this bridge

Junipero Serra Bld over San Francisquito Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Junipero Serra Bld over San Francisquito Creek in Santa Clara County, California. It was built in 1989, so it is 36 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 20,000 vehicles a day, roughly 3% of them trucks, projected to reach 30,605 by 2040. The structure is 221 ft (67.5 m) long and 62 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesJunipero Serra Bld
CrossesSan Francisquito Creek
LocationEast of Alpine Road
RouteCounty Highway 0
Coordinates37.42434, -122.19124
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length221 ft (67.5 m)
Longest span80 ft (24.5 m)
Deck width62 ft (18.9 m)
Roadway width58 ft (17.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2015)
Projected traffic30,605 by 2040
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

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 Junipero Serra Bld over San Francisquito Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Junipero Serra Bld over San Francisquito 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 September 2023.

How much traffic does Junipero Serra Bld over San Francisquito Creek carry?

About 20,000 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Junipero Serra Bld over San Francisquito Creek?

The structure is 221 ft (67.5 m) long with a longest span of 80 ft (24.5 m) and a deck 62 ft wide.

Who owns Junipero Serra Bld over San Francisquito Creek?

It is owned by the County Highway Agency.