US Bridges

Reservoir Road over M.I.D. Main Canal

Poor

Stanislaus County, California · 0.9 MI N/O SR 132 · Structure no. 38C0289

Built
1965
60 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete Continuous
Length
78 ft
4 main spans
Daily traffic
1,200
2019 count
Owner
County
County Highway Agency

About this bridge

Reservoir Road over M.I.D. Main Canal is a concrete continuous slab carrying Reservoir Road over M.I.D. Main Canal in Stanislaus County, California. It was built in 1965, so it is 60 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 1,200 vehicles a day, roughly 1% of them trucks, projected to reach 2,224 by 2047. The structure is 78 ft (23.8 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesReservoir Road
CrossesM.I.D. Main Canal
Location0.9 MI N/O SR 132
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.65424, -120.67553
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length78 ft (23.8 m)
Longest span22 ft (6.7 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2019)
Projected traffic2,224 by 2047
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$398,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Reservoir Road over M.I.D. Main Canal built?

It was built in 1965, making it 60 years old in 2025.

What condition is Reservoir Road over M.I.D. Main 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 Reservoir Road over M.I.D. Main Canal carry?

About 1,200 vehicles per day (2019 count), of which roughly 1% are trucks.

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

The structure is 78 ft (23.8 m) long with a longest span of 22 ft (6.7 m) and a deck 33 ft wide.

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

It is owned by the County Highway Agency.