US Bridges

Sycamore Avenue over Patterson Id Main Canal

Fair

Stanislaus County, California · 0.6 MI S/O Las Palmas Ave · Structure no. 38C0185

Built
1920
105 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Concrete
Length
22 ft
1 main span
Daily traffic
377
2016 count
Owner
County
County Highway Agency

About this bridge

Sycamore Avenue over Patterson Id Main Canal is a concrete tee beam carrying Sycamore Avenue over Patterson Id Main Canal in Stanislaus County, California. It was built in 1920, so it is 105 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 377 vehicles a day, roughly 25% of them trucks, projected to reach 418 by 2046. The structure is 22 ft (6.6 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSycamore Avenue
CrossesPatterson Id Main Canal
Location0.6 MI S/O Las Palmas Ave
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.47109, -121.10637
Functional classUrban Collector

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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.6 m)
Longest span22 ft (6.6 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic377 (2016)
Projected traffic418 by 2046
Trucks25%
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 Sycamore Avenue over Patterson Id Main Canal built?

It was built in 1920, making it 105 years old in 2025.

What condition is Sycamore Avenue over Patterson Id Main Canal 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 January 2024.

How much traffic does Sycamore Avenue over Patterson Id Main Canal carry?

About 377 vehicles per day (2016 count), of which roughly 25% are trucks.

How long is Sycamore Avenue over Patterson Id Main Canal?

The structure is 22 ft (6.6 m) long with a longest span of 22 ft (6.6 m) and a deck 24 ft wide.

Who owns Sycamore Avenue over Patterson Id Main Canal?

It is owned by the County Highway Agency.