US Bridges

Sycamore Ave over Llagas Creek

Good

Santa Clara County, California · 0.4 MI W/O Bowden Ave · Structure no. 37C0163

Built
1928
97 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
53 ft
1 main span
Daily traffic
780
2014 count
Owner
County
County Highway Agency

About this bridge

Sycamore Ave over Llagas Creek is a concrete stringer/multi-beam or girder carrying Sycamore Ave over Llagas Creek in Santa Clara County, California. It was built in 1928, so it is 97 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 780 vehicles a day, roughly 5% of them trucks, projected to reach 1,020 by 2042. The structure is 53 ft (16.1 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSycamore Ave
CrossesLlagas Creek
Location0.4 MI W/O Bowden Ave
RouteCounty Highway 0
Coordinates37.08948, -121.66134
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.3 US tons
Inventory rating17.9 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length53 ft (16.1 m)
Longest span49 ft (14.9 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic780 (2014)
Projected traffic1,020 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Sycamore Ave over Llagas Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is Sycamore Ave over Llagas 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 September 2024.

How much traffic does Sycamore Ave over Llagas Creek carry?

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

How long is Sycamore Ave over Llagas Creek?

The structure is 53 ft (16.1 m) long with a longest span of 49 ft (14.9 m) and a deck 24 ft wide.

Who owns Sycamore Ave over Llagas Creek?

It is owned by the County Highway Agency.