US Bridges

State Route 1 NB over Pajaro River

Good

Monterey County, California · 05-MON-001-R101.98 · Structure no. 44 0069R

Built
1967
58 years old, rebuilt 2001
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
484 ft
6 main spans
Daily traffic
15,250
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 NB over Pajaro River is a prestressed concrete stringer/multi-beam or girder carrying State Route 1 NB over Pajaro River in Monterey County, California. It was built in 1967 and reconstructed in 2001, so it is 58 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 15,250 vehicles a day, roughly 10% of them trucks, projected to reach 17,246 by 2043. The structure is 484 ft (147.5 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesState Route 1 NB
CrossesPajaro River
Location05-MON-001-R101.98
RouteState Highway 1
Coordinates36.88338, -121.77216
Functional classRural Principal Arterial - Other

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.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating28.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length484 ft (147.5 m)
Longest span80 ft (24.4 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,250 (2009)
Projected traffic17,246 by 2043
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Pajaro River built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2001.

What condition is State Route 1 NB over Pajaro River 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 State Route 1 NB over Pajaro River carry?

About 15,250 vehicles per day (2009 count), of which roughly 10% are trucks.

How long is State Route 1 NB over Pajaro River?

The structure is 484 ft (147.5 m) long with a longest span of 80 ft (24.4 m) and a deck 41 ft wide.

Who owns State Route 1 NB over Pajaro River?

It is owned by the State Highway Agency.