US Bridges

Snyder Road over Delta-Mendota Canal

Poor

Merced County, California · 0.1 MI W Orchard Road · Structure no. 39C0207

Built
1956
69 years old
Condition
Poor
inspected February 2025
Type
Tee Beam
Concrete
Length
113 ft
3 main spans
Daily traffic
150
2014 count
Owner
County
County Highway Agency

About this bridge

Snyder Road over Delta-Mendota Canal is a concrete tee beam carrying Snyder Road over Delta-Mendota Canal in Merced County, California. It was built in 1956, so it is 69 years old, older 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 401 by 2047. The structure is 113 ft (34.3 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSnyder Road
CrossesDelta-Mendota Canal
Location0.1 MI W Orchard Road
RouteCounty Highway 0
Coordinates37.20245, -121.06879
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length113 ft (34.3 m)
Longest span35 ft (10.7 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2014)
Projected traffic401 by 2047
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Snyder Road over Delta-Mendota Canal built?

It was built in 1956, making it 69 years old in 2025.

What condition is Snyder Road over Delta-Mendota Canal 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 Snyder Road over Delta-Mendota Canal carry?

About 150 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Snyder Road over Delta-Mendota Canal?

The structure is 113 ft (34.3 m) long with a longest span of 35 ft (10.7 m) and a deck 29 ft wide.

Who owns Snyder Road over Delta-Mendota Canal?

It is owned by the County Highway Agency.