US Bridges

Graystone Lane over Alamitos Creek

Fair

Santa Clara County, California · 0.01 MI E Camden Ave · Structure no. 37C0540

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
169 ft
4 main spans
Daily traffic
2,500
2009 count
Owner
County
County Highway Agency

About this bridge

Graystone Lane over Alamitos Creek is a concrete continuous slab carrying Graystone Lane over Alamitos Creek in Santa Clara County, California. It was built in 1981, so it is 44 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 2,500 vehicles a day, roughly 5% of them trucks, projected to reach 3,383 by 2042. The structure is 169 ft (51.5 m) long and 39 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesGraystone Lane
CrossesAlamitos Creek
Location0.01 MI E Camden Ave
RouteCounty Highway 0
CountySanta Clara County
StateCalifornia
Coordinates37.22231, -121.85122
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
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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83.9 US tons
Inventory rating50.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length169 ft (51.5 m)
Longest span43 ft (13.1 m)
Deck width39 ft (12 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic2,500 (2009)
Projected traffic3,383 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Graystone Lane over Alamitos Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Graystone Lane over Alamitos 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 March 2024.

How much traffic does Graystone Lane over Alamitos Creek carry?

About 2,500 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is Graystone Lane over Alamitos Creek?

The structure is 169 ft (51.5 m) long with a longest span of 43 ft (13.1 m) and a deck 39 ft wide.

Who owns Graystone Lane over Alamitos Creek?

It is owned by the County Highway Agency.