US Bridges

Main Street over State Route 17

Good

Santa Clara County, California · 04-SCL-017-6.55-LGTS · Structure no. 37 0117

Built
1955
70 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
192 ft
2 main spans
Daily traffic
9,966
2014 count
Owner
State
State Highway Agency

About this bridge

Main Street over State Route 17 is a concrete continuous box beam or girders - multiple carrying Main Street over State Route 17 in Santa Clara County, California. It was built in 1955, so it is 70 years old, older 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 9,966 vehicles a day, roughly 3% of them trucks, projected to reach 13,262 by 2044. The structure is 192 ft (58.6 m) long and 78 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMain Street
CrossesState Route 17
Location04-SCL-017-6.55-LGTS
RouteCity Street 0
Coordinates37.2216, -121.98219
Functional classUrban Minor Arterial

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.8 US tons
Inventory rating34.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length192 ft (58.6 m)
Longest span82 ft (25.1 m)
Deck width78 ft (23.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,966 (2014)
Projected traffic13,262 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Main Street over State Route 17 built?

It was built in 1955, making it 70 years old in 2025.

What condition is Main Street over State Route 17 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 July 2024.

How much traffic does Main Street over State Route 17 carry?

About 9,966 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is Main Street over State Route 17?

The structure is 192 ft (58.6 m) long with a longest span of 82 ft (25.1 m) and a deck 78 ft wide.

Who owns Main Street over State Route 17?

It is owned by the State Highway Agency.