US Bridges

State Route 9 SB over Hillside

Good

Santa Cruz County, California · 05-SCR-009-15.20 · Structure no. 36 0097

Built
1984
41 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
121 ft
2 main spans
Daily traffic
12,100
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 9 SB over Hillside is a concrete continuous box beam or girders - multiple carrying State Route 9 SB over Hillside in Santa Cruz County, California. It was built in 1984, so it is 41 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 12,100 vehicles a day, roughly 4% of them trucks, projected to reach 8,919 by 2046. The structure is 121 ft (36.9 m) long and 6 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

CarriesState Route 9 SB
CrossesHillside
Location05-SCR-009-15.20
RouteState Highway 9
Coordinates37.15169, -122.13557
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 inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length121 ft (36.9 m)
Longest span61 ft (18.6 m)
Deck width6 ft (1.8 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,100 (2009)
Projected traffic8,919 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed26.1 mi (42 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 9 SB over Hillside built?

It was built in 1984, making it 41 years old in 2025.

What condition is State Route 9 SB 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 9 SB over Hillside carry?

About 12,100 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is State Route 9 SB over Hillside?

The structure is 121 ft (36.9 m) long with a longest span of 61 ft (18.6 m) and a deck 6 ft wide.

Who owns State Route 9 SB over Hillside?

It is owned by the State Highway Agency.