US Bridges

S1-OFF & ON-S1 Rmp over State Route 1

Good

Monterey County, California · 05-MON-001-R82.89 · Structure no. 44 0199

Built
1973
52 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
262 ft
2 main spans
Daily traffic
7,000
2013 count
Owner
State
State Highway Agency

About this bridge

S1-OFF & ON-S1 Rmp over State Route 1 is a prestressed concrete continuous box beam or girders - multiple carrying S1-OFF & ON-S1 Rmp over State Route 1 in Monterey County, California. It was built in 1973, so it is 52 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 7,000 vehicles a day, roughly 3% of them trucks, projected to reach 11,719 by 2043. The structure is 262 ft (79.9 m) long and 60 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesS1-OFF & ON-S1 Rmp
CrossesState Route 1
Location05-MON-001-R82.89
RouteState Highway 1
CountyMonterey County
StateCalifornia
Coordinates36.64735, -121.81597
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionAugust 2023
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 rating54.2 US tons
Inventory rating33.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length262 ft (79.9 m)
Longest span150 ft (45.7 m)
Deck width60 ft (18.3 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2013)
Projected traffic11,719 by 2043
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 S1-OFF & ON-S1 Rmp over State Route 1 built?

It was built in 1973, making it 52 years old in 2025.

What condition is S1-OFF & ON-S1 Rmp over State Route 1 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 August 2023.

How much traffic does S1-OFF & ON-S1 Rmp over State Route 1 carry?

About 7,000 vehicles per day (2013 count), of which roughly 3% are trucks.

How long is S1-OFF & ON-S1 Rmp over State Route 1?

The structure is 262 ft (79.9 m) long with a longest span of 150 ft (45.7 m) and a deck 60 ft wide.

Who owns S1-OFF & ON-S1 Rmp over State Route 1?

It is owned by the State Highway Agency.