US Bridges

State Route 1 over Hillside

Fair

Monterey County, California · 05-MON-001-36.20 · Structure no. 44 0266

Built
2000
25 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
108 ft
3 main spans
Daily traffic
5,000
2010 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Hillside is a concrete continuous slab carrying State Route 1 over Hillside in Monterey County, California. It was built in 2000, so it is 25 years old, younger 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, roughly 1% of them trucks, projected to reach 7,825 by 2045. The structure is 108 ft (32.9 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-001-36.20
RouteState Highway 1
CountyMonterey County
StateCalifornia
Coordinates36.16339, -121.67381
Functional classRural Principal Arterial - Other

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 inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length108 ft (32.9 m)
Longest span34 ft (10.4 m)
Deck width35 ft (10.7 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2010)
Projected traffic7,825 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed123.7 mi (199 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 1 over Hillside built?

It was built in 2000, making it 25 years old in 2025.

What condition is State Route 1 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 February 2023.

How much traffic does State Route 1 over Hillside carry?

About 5,000 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is State Route 1 over Hillside?

The structure is 108 ft (32.9 m) long with a longest span of 34 ft (10.4 m) and a deck 35 ft wide.

Who owns State Route 1 over Hillside?

It is owned by the State Highway Agency.