US Bridges

NB 101 Off-Ramp over Yerba Buena Road

Good

Santa Clara County, California · 04-SCL-101-31.00-SJS · Structure no. 37 0409S

Built
1989
36 years old
Condition
Good
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
173 ft
1 main span
Daily traffic
8,800
2001 count
Owner
State
State Highway Agency

About this bridge

NB 101 Off-Ramp over Yerba Buena Road is a prestressed concrete box beam or girders - multiple carrying NB 101 Off-Ramp over Yerba Buena Road in Santa Clara County, California. It was built in 1989, so it is 36 years old, younger 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 8,800 vehicles a day, roughly 4% of them trucks, projected to reach 11,796 by 2041. The structure is 173 ft (52.7 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNB 101 Off-Ramp
CrossesYerba Buena Road
Location04-SCL-101-31.00-SJS
RouteState Highway 101
CountySanta Clara County
StateCalifornia
Coordinates37.2947, -121.8096
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length173 ft (52.7 m)
Longest span168 ft (51.3 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (2001)
Projected traffic11,796 by 2041
Trucks4%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 NB 101 Off-Ramp over Yerba Buena Road built?

It was built in 1989, making it 36 years old in 2025.

What condition is NB 101 Off-Ramp over Yerba Buena Road 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 January 2023.

How much traffic does NB 101 Off-Ramp over Yerba Buena Road carry?

About 8,800 vehicles per day (2001 count), of which roughly 4% are trucks.

How long is NB 101 Off-Ramp over Yerba Buena Road?

The structure is 173 ft (52.7 m) long with a longest span of 168 ft (51.3 m) and a deck 27 ft wide.

Who owns NB 101 Off-Ramp over Yerba Buena Road?

It is owned by the State Highway Agency.