US Bridges

State Route 9 NB over Hillside

Fair

Santa Cruz County, California · 05-SCR-009-4.27 · Structure no. 36 0043

Built
1922
103 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
82 ft
4 main spans
Daily traffic
5,000
2016 count
Owner
State
State Highway Agency

About this bridge

State Route 9 NB over Hillside is a concrete continuous tee beam carrying State Route 9 NB over Hillside in Santa Cruz County, California. It was built in 1922, so it is 103 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,000 vehicles a day, projected to reach 5,600 by 2042. The structure is 82 ft (25 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesState Route 9 NB
CrossesHillside
Location05-SCR-009-4.27
RouteState Highway 9
CountySanta Cruz County
StateCalifornia
Coordinates37.02862, -122.05886
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length82 ft (25 m)
Longest span20 ft (6.1 m)
Deck width18 ft (5.4 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2016)
Projected traffic5,600 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed3.7 mi (6 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 NB over Hillside built?

It was built in 1922, making it 103 years old in 2025.

What condition is State Route 9 NB over Hillside in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does State Route 9 NB over Hillside carry?

About 5,000 vehicles per day (2016 count).

How long is State Route 9 NB over Hillside?

The structure is 82 ft (25 m) long with a longest span of 20 ft (6.1 m) and a deck 18 ft wide.

Who owns State Route 9 NB over Hillside?

It is owned by the State Highway Agency.