US Bridges

Gericke RD over Americano Creek

Poor

Sonoma County, California · 0.2 MI S Valley Ford RD · Structure no. 20C0295

Built
1972
53 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete Continuous
Length
107 ft
3 main spans
Daily traffic
100
2011 count
Owner
County
County Highway Agency

About this bridge

Gericke RD over Americano Creek is a concrete continuous slab carrying Gericke RD over Americano Creek in Sonoma County, California. It was built in 1972, so it is 53 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 100 vehicles a day, projected to reach 113 by 2047. The structure is 107 ft (32.6 m) long and 29 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesGericke RD
CrossesAmericano Creek
Location0.2 MI S Valley Ford RD
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.31083, -122.87237
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span42 ft (12.8 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2011)
Projected traffic113 by 2047
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$477,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gericke RD over Americano Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Gericke RD over Americano Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Gericke RD over Americano Creek carry?

About 100 vehicles per day (2011 count).

How long is Gericke RD over Americano Creek?

The structure is 107 ft (32.6 m) long with a longest span of 42 ft (12.8 m) and a deck 29 ft wide.

Who owns Gericke RD over Americano Creek?

It is owned by the County Highway Agency.