US Bridges

Sartori DR over Adobe Creek

Poor

Sonoma County, California · 0.2 MI SE Casa Grande Ave · Structure no. 20C0003

Built
1976
49 years old
Condition
Poor
inspected June 2023
Type
Slab
Concrete Continuous
Length
53 ft
2 main spans
Daily traffic
1,475
2013 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sartori DR over Adobe Creek is a concrete continuous slab carrying Sartori DR over Adobe Creek in Sonoma County, California. It was built in 1976, so it is 49 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 1,475 vehicles a day, roughly 1% of them trucks, projected to reach 3,137 by 2045. The structure is 53 ft (16.3 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSartori DR
CrossesAdobe Creek
Location0.2 MI SE Casa Grande Ave
RouteCity Street 0
Coordinates38.23649, -122.59676
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
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 rating35.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length53 ft (16.3 m)
Longest span26 ft (8 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,475 (2013)
Projected traffic3,137 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$438,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sartori DR over Adobe Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Sartori DR over Adobe 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 June 2023.

How much traffic does Sartori DR over Adobe Creek carry?

About 1,475 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is Sartori DR over Adobe Creek?

The structure is 53 ft (16.3 m) long with a longest span of 26 ft (8 m) and a deck 52 ft wide.

Who owns Sartori DR over Adobe Creek?

It is owned by the City or Municipal Highway Agency.