US Bridges

Jolon RD-S101 Onrp over Kemp Canyon Creek

Good

Monterey County, California · 05-MON-101-R9.65 · Structure no. 44 0262K

Built
1942
83 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
620
2012 count
Owner
State
State Highway Agency

About this bridge

Jolon RD-S101 Onrp over Kemp Canyon Creek is a concrete continuous culvert carrying Jolon RD-S101 Onrp over Kemp Canyon Creek in Monterey County, California. It was built in 1942, so it is 83 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 620 vehicles a day, roughly 1% of them trucks, projected to reach 1,048 by 2043. The structure is 37 ft (11.2 m) long. If it were closed, the detour would be 14.9 mi (24 km).

CarriesJolon RD-S101 Onrp
CrossesKemp Canyon Creek
Location05-MON-101-R9.65
RouteU.S. Route 101
Coordinates35.87337, -120.83634
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length37 ft (11.2 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic620 (2012)
Projected traffic1,048 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Jolon RD-S101 Onrp over Kemp Canyon Creek built?

It was built in 1942, making it 83 years old in 2025.

What condition is Jolon RD-S101 Onrp over Kemp Canyon Creek 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 Jolon RD-S101 Onrp over Kemp Canyon Creek carry?

About 620 vehicles per day (2012 count), of which roughly 1% are trucks.

How long is Jolon RD-S101 Onrp over Kemp Canyon Creek?

The structure is 37 ft (11.2 m) long with a longest span of 11 ft (3.5 m).

Who owns Jolon RD-S101 Onrp over Kemp Canyon Creek?

It is owned by the State Highway Agency.