US Bridges

N Milpitas Blvd over Calera Creek

Fair

Santa Clara County, California · Hanson Ct · Structure no. 37C0231

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
15,000
2008 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Milpitas Blvd over Calera Creek is a concrete continuous culvert carrying N Milpitas Blvd over Calera Creek in Santa Clara County, California. It was built in 1975, so it is 50 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 15,000 vehicles a day, roughly 3% of them trucks, projected to reach 21,087 by 2046. The structure is 21 ft (6.4 m) long and 113 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN Milpitas Blvd
CrossesCalera Creek
LocationHanson Ct
RouteCity Street 0
CountySanta Clara County
StateCalifornia
Coordinates37.44629, -121.90853
Functional classUrban Other Principal 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width113 ft (34.3 m)
Roadway width89 ft (27 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2008)
Projected traffic21,087 by 2046
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was N Milpitas Blvd over Calera Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is N Milpitas Blvd over Calera 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 December 2024.

How much traffic does N Milpitas Blvd over Calera Creek carry?

About 15,000 vehicles per day (2008 count), of which roughly 3% are trucks.

How long is N Milpitas Blvd over Calera Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 113 ft wide.

Who owns N Milpitas Blvd over Calera Creek?

It is owned by the City or Municipal Highway Agency.