US Bridges

US Highway 101 NB over Salinas River

Fair

Monterey County, California · 05-MON-101-R30.80 · Structure no. 44 0177R

Built
1971
54 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
1,431 ft
13 main spans
Daily traffic
7,450
2009 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 NB over Salinas River is a concrete continuous box beam or girders - multiple carrying US Highway 101 NB over Salinas River in Monterey County, California. It was built in 1971, so it is 54 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 5 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 7,450 vehicles a day, roughly 18% of them trucks, projected to reach 13,520 by 2043. The structure is 1,431 ft (436.3 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS Highway 101 NB
CrossesSalinas River
Location05-MON-101-R30.80
RouteU.S. Route 101
Coordinates36.10552, -121.02338
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 rating58.5 US tons
Inventory rating42.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20 + Mod
Structure length1,431 ft (436.3 m)
Longest span114 ft (34.7 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,450 (2009)
Projected traffic13,520 by 2043
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 1971, making it 54 years old in 2025.

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

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

About 7,450 vehicles per day (2009 count), of which roughly 18% are trucks.

How long is US Highway 101 NB over Salinas River?

The structure is 1,431 ft (436.3 m) long with a longest span of 114 ft (34.7 m) and a deck 41 ft wide.

Who owns US Highway 101 NB over Salinas River?

It is owned by the State Highway Agency.