US Bridges

State Route 17 over Hillside

Good

Santa Cruz County, California · 05-SCR-017-9.43 · Structure no. 36 0111

Built
2007
18 years old, rebuilt 2023
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
1,125 ft
35 main spans
Daily traffic
56,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 17 over Hillside is a concrete continuous slab carrying State Route 17 over Hillside in Santa Cruz County, California. It was built in 2007 and reconstructed in 2023, so it is 18 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 56,000 vehicles a day, projected to reach 77,175 by 2042. The structure is 1,125 ft (343 m) long and 82 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesState Route 17
CrossesHillside
Location05-SCR-017-9.43
RouteState Highway 17
Coordinates37.10385, -121.97611
Functional classRural Principal Arterial - Other

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 inspectionJune 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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans35
Design loadHL 93
Structure length1,125 ft (343 m)
Longest span33 ft (10 m)
Deck width82 ft (25 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56,000 (2009)
Projected traffic77,175 by 2042
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed6.8 mi (11 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 State Route 17 over Hillside built?

It was built in 2007, making it 18 years old in 2025. It was reconstructed in 2023.

What condition is State Route 17 over Hillside 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 June 2024.

How much traffic does State Route 17 over Hillside carry?

About 56,000 vehicles per day (2009 count).

How long is State Route 17 over Hillside?

The structure is 1,125 ft (343 m) long with a longest span of 33 ft (10 m) and a deck 82 ft wide.

Who owns State Route 17 over Hillside?

It is owned by the State Highway Agency.