US Bridges

Sexton Road over Jonive Creek

Fair

Sonoma County, California · 0.05 MI S Bodega HWY · Structure no. 20C0319

Built
1964
61 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
62 ft
3 main spans
Daily traffic
1,210
2018 count
Owner
County
County Highway Agency

About this bridge

Sexton Road over Jonive Creek is a concrete continuous slab carrying Sexton Road over Jonive Creek in Sonoma County, California. It was built in 1964, so it is 61 years old, older 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 1,210 vehicles a day, roughly 1% of them trucks, projected to reach 1,346 by 2047. The structure is 62 ft (18.9 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSexton Road
CrossesJonive Creek
Location0.05 MI S Bodega HWY
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.39118, -122.87955
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span24 ft (7.3 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,210 (2018)
Projected traffic1,346 by 2047
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Sexton Road over Jonive Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Sexton Road over Jonive Creek 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 February 2025.

How much traffic does Sexton Road over Jonive Creek carry?

About 1,210 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Sexton Road over Jonive Creek?

The structure is 62 ft (18.9 m) long with a longest span of 24 ft (7.3 m) and a deck 29 ft wide.

Who owns Sexton Road over Jonive Creek?

It is owned by the County Highway Agency.