US Bridges

Jolon RD over Jolon Creek

Good

Monterey County, California · Near Mission RD · Structure no. 44C0027

Built
1942
83 years old
Condition
Good
inspected February 2025
Type
Slab
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
1,800
2017 count
Owner
County
County Highway Agency

About this bridge

Jolon RD over Jolon Creek is a concrete continuous slab carrying Jolon RD over Jolon 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 1,800 vehicles a day, roughly 5% of them trucks, projected to reach 1,558 by 2047. The structure is 80 ft (24.4 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesJolon RD
CrossesJolon Creek
LocationNear Mission RD
RouteCounty Highway 0
Coordinates35.96599, -121.17237
Functional classRural Major Collector

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 protection9 ExcellentNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length80 ft (24.4 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2017)
Projected traffic1,558 by 2047
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 over Jolon Creek built?

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

What condition is Jolon RD over Jolon 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 February 2025.

How much traffic does Jolon RD over Jolon Creek carry?

About 1,800 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Jolon RD over Jolon Creek?

The structure is 80 ft (24.4 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Jolon RD over Jolon Creek?

It is owned by the County Highway Agency.