US Bridges

US Highway 101 NB over Salinas River

Good

Monterey County, California · 05-MON-101-R41.36R · Structure no. 44 0032R

Built
1956
69 years old, rebuilt 2023
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,806 ft
17 main spans
Daily traffic
15,900
2009 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 NB over Salinas River is a steel stringer/multi-beam or girder carrying US Highway 101 NB over Salinas River in Monterey County, California. It was built in 1956 and reconstructed in 2023, so it is 69 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 15,900 vehicles a day, roughly 13% of them trucks, projected to reach 25,980 by 2041. The structure is 1,806 ft (550.4 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS Highway 101 NB
CrossesSalinas River
Location05-MON-101-R41.36R
RouteU.S. Route 101
Coordinates36.20379, -121.1408
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating86.4 US tons
Inventory rating51.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans17
Design loadHS 20 + Mod
Structure length1,806 ft (550.4 m)
Longest span130 ft (39.5 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,900 (2009)
Projected traffic25,980 by 2041
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US Highway 101 NB over Salinas River built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2023.

What condition is US Highway 101 NB over Salinas 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 October 2023.

How much traffic does US Highway 101 NB over Salinas River carry?

About 15,900 vehicles per day (2009 count), of which roughly 13% are trucks.

How long is US Highway 101 NB over Salinas River?

The structure is 1,806 ft (550.4 m) long with a longest span of 130 ft (39.5 m) and a deck 42 ft wide.

Who owns US Highway 101 NB over Salinas River?

It is owned by the State Highway Agency.