US Bridges

Tasman DR over Calabazas Creek

Poor

Santa Clara County, California · E of Lawrence Expwy · Structure no. 37C0253

Built
1976
49 years old
Condition
Poor
inspected April 2024
Type
Slab
Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
6,584
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Tasman DR over Calabazas Creek is a concrete continuous slab carrying Tasman DR over Calabazas Creek in Santa Clara County, California. It was built in 1976, so it is 49 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,584 vehicles a day, roughly 1% of them trucks, projected to reach 12,242 by 2046. The structure is 110 ft (33.5 m) long and 77 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTasman DR
CrossesCalabazas Creek
LocationE of Lawrence Expwy
RouteCity Street 0
Coordinates37.40345, -121.98692
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating23.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length110 ft (33.5 m)
Longest span36 ft (11 m)
Deck width77 ft (23.6 m)
Roadway width64 ft (19.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,584 (2022)
Projected traffic12,242 by 2046
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.3 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tasman DR over Calabazas Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Tasman DR over Calabazas Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Tasman DR over Calabazas Creek carry?

About 6,584 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Tasman DR over Calabazas Creek?

The structure is 110 ft (33.5 m) long with a longest span of 36 ft (11 m) and a deck 77 ft wide.

Who owns Tasman DR over Calabazas Creek?

It is owned by the City or Municipal Highway Agency.