US Bridges

State Route 1 NB over Sloat Avenue

Good

Monterey County, California · 05-MON-001-R77.59-MON · Structure no. 44 0168R

Built
1968
57 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
41,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 NB over Sloat Avenue is a prestressed concrete box beam or girders - multiple carrying State Route 1 NB over Sloat Avenue in Monterey County, California. It was built in 1968, so it is 57 years old, older 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 41,000 vehicles a day, roughly 3% of them trucks, projected to reach 35,671 by 2043. The structure is 94 ft (28.7 m) long and 70 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesState Route 1 NB
CrossesSloat Avenue
Location05-MON-001-R77.59-MON
RouteState Highway 1
Coordinates36.59301, -121.87735
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating29.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length94 ft (28.7 m)
Longest span94 ft (28.7 m)
Deck width70 ft (21.3 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,000 (2009)
Projected traffic35,671 by 2043
Trucks3%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 NB over Sloat Avenue built?

It was built in 1968, making it 57 years old in 2025.

What condition is State Route 1 NB over Sloat Avenue 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 July 2023.

How much traffic does State Route 1 NB over Sloat Avenue carry?

About 41,000 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is State Route 1 NB over Sloat Avenue?

The structure is 94 ft (28.7 m) long with a longest span of 94 ft (28.7 m) and a deck 70 ft wide.

Who owns State Route 1 NB over Sloat Avenue?

It is owned by the State Highway Agency.