US Bridges

Landess Ave EB over Interstate 680

Poor

Santa Clara County, California · 04-SCL-680-M6.17-MPS · Structure no. 37 0373

Built
1974
51 years old
Condition
Poor
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
317 ft
2 main spans
Daily traffic
22,241
2009 count
Owner
State
State Highway Agency

About this bridge

Landess Ave EB over Interstate 680 is a prestressed concrete continuous box beam or girders - multiple carrying Landess Ave EB over Interstate 680 in Santa Clara County, California. It was built in 1974, so it is 51 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 22,241 vehicles a day, roughly 1% of them trucks, projected to reach 21,808 by 2041. The structure is 317 ft (96.6 m) long and 56 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLandess Ave EB
CrossesInterstate 680
Location04-SCL-680-M6.17-MPS
RouteCity Street 0C007
Coordinates37.41408, -121.88083
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length317 ft (96.6 m)
Longest span156 ft (47.5 m)
Deck width56 ft (17.1 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,241 (2009)
Projected traffic21,808 by 2041
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Landess Ave EB over Interstate 680 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Landess Ave EB over Interstate 680 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 July 2023.

How much traffic does Landess Ave EB over Interstate 680 carry?

About 22,241 vehicles per day (2009 count), of which roughly 1% are trucks.

How long is Landess Ave EB over Interstate 680?

The structure is 317 ft (96.6 m) long with a longest span of 156 ft (47.5 m) and a deck 56 ft wide.

Who owns Landess Ave EB over Interstate 680?

It is owned by the State Highway Agency.