US Bridges

Hopper Road over M.I.D. Main Canal

Fair

Stanislaus County, California · 0.5 MI N/O SR 132 · Structure no. 38C0291

Built
1929
96 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
71 ft
4 main spans
Daily traffic
425
2019 count
Owner
County
County Highway Agency

About this bridge

Hopper Road over M.I.D. Main Canal is a concrete continuous tee beam carrying Hopper Road over M.I.D. Main Canal in Stanislaus County, California. It was built in 1929, so it is 96 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 5 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 425 vehicles a day, roughly 3% of them trucks, projected to reach 557 by 2047. The structure is 71 ft (21.6 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesHopper Road
CrossesM.I.D. Main Canal
Location0.5 MI N/O SR 132
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.64661, -120.82948
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2025
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.9 US tons
Inventory rating18.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length71 ft (21.6 m)
Longest span18 ft (5.4 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2019)
Projected traffic557 by 2047
Trucks3%
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 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 Hopper Road over M.I.D. Main Canal built?

It was built in 1929, making it 96 years old in 2025.

What condition is Hopper Road over M.I.D. 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 2025.

How much traffic does Hopper Road over M.I.D. Main Canal carry?

About 425 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Hopper Road over M.I.D. Main Canal?

The structure is 71 ft (21.6 m) long with a longest span of 18 ft (5.4 m) and a deck 22 ft wide.

Who owns Hopper Road over M.I.D. Main Canal?

It is owned by the County Highway Agency.