US Bridges

State Route 1 over Hillside

Good

Monterey County, California · 05-MON-001-21.50 · Structure no. 44 0290

Built
2013
12 years old
Condition
Good
inspected February 2025
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
620 ft
1 main span
Daily traffic
2,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Hillside is a prestressed concrete continuous segmental box girder carrying State Route 1 over Hillside in Monterey County, California. It was built in 2013, so it is 12 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 2,000 vehicles a day, projected to reach 2,793 by 2045. The structure is 620 ft (189 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesState Route 1
CrossesHillside
Location05-MON-001-21.50
RouteState Highway 1
CountyMonterey County
StateCalifornia
Coordinates36.01114, -121.52476
Functional classRural 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 inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length620 ft (189 m)
Longest span311 ft (94.8 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2009)
Projected traffic2,793 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed123.7 mi (199 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 State Route 1 over Hillside built?

It was built in 2013, making it 12 years old in 2025.

What condition is State Route 1 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 February 2025.

How much traffic does State Route 1 over Hillside carry?

About 2,000 vehicles per day (2009 count).

How long is State Route 1 over Hillside?

The structure is 620 ft (189 m) long with a longest span of 311 ft (94.8 m) and a deck 35 ft wide.

Who owns State Route 1 over Hillside?

It is owned by the State Highway Agency.