US Bridges

Llagas Ave over Llagas Creek

Fair

Santa Clara County, California · 0.8 MI N San Martin Ave · Structure no. 37C0549

Built
1925
100 years old
Condition
Fair
inspected November 2024
Type
Girder and Floorbeam System
Concrete
Length
54 ft
1 main span
Daily traffic
1,780
2014 count
Owner
County
County Highway Agency

About this bridge

Llagas Ave over Llagas Creek is a concrete girder and floorbeam system carrying Llagas Ave over Llagas Creek in Santa Clara County, California. It was built in 1925, so it is 100 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 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 1,780 vehicles a day, roughly 5% of them trucks, projected to reach 2,047 by 2044. The structure is 54 ft (16.5 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesLlagas Ave
CrossesLlagas Creek
Location0.8 MI N San Martin Ave
RouteCounty Highway 0
CountySanta Clara County
StateCalifornia
Coordinates37.09607, -121.61248
Functional classRural Minor Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating16.1 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length54 ft (16.5 m)
Longest span52 ft (15.8 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,780 (2014)
Projected traffic2,047 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Llagas Ave over Llagas Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is Llagas Ave over Llagas 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 November 2024.

How much traffic does Llagas Ave over Llagas Creek carry?

About 1,780 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Llagas Ave over Llagas Creek?

The structure is 54 ft (16.5 m) long with a longest span of 52 ft (15.8 m) and a deck 24 ft wide.

Who owns Llagas Ave over Llagas Creek?

It is owned by the County Highway Agency.