US Bridges

N101- On/Off-Ramp over Elkhorn Slough Tributary

Fair

Monterey County, California · 05-MON-101-101.29 · Structure no. 44 0293Y

Built
2014
11 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
2,500
2014 count
Owner
State
State Highway Agency

About this bridge

N101- On/Off-Ramp over Elkhorn Slough Tributary is a concrete continuous culvert carrying N101- On/Off-Ramp over Elkhorn Slough Tributary in Monterey County, California. It was built in 2014, so it is 11 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 6 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 2,500 vehicles a day, roughly 5% of them trucks, projected to reach 3,942 by 2044. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesN101- On/Off-Ramp
CrossesElkhorn Slough Tributary
Location05-MON-101-101.29
RouteU.S. Route 101
CountyMonterey County
StateCalifornia
Coordinates36.85596, -121.62976
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2014)
Projected traffic3,942 by 2044
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was N101- On/Off-Ramp over Elkhorn Slough Tributary built?

It was built in 2014, making it 11 years old in 2025.

What condition is N101- On/Off-Ramp over Elkhorn Slough Tributary 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 June 2024.

How much traffic does N101- On/Off-Ramp over Elkhorn Slough Tributary carry?

About 2,500 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is N101- On/Off-Ramp over Elkhorn Slough Tributary?

The structure is 45 ft (13.7 m) long with a longest span of 14 ft (4.3 m).

Who owns N101- On/Off-Ramp over Elkhorn Slough Tributary?

It is owned by the State Highway Agency.