US Bridges

Marshall Road over Delta-Mendota Canal

Fair

Stanislaus County, California · 0.4 MI East of Ward Ave · Structure no. 38C0212

Built
1949
76 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
106 ft
3 main spans
Daily traffic
1,216
2016 count
Owner
County
County Highway Agency

About this bridge

Marshall Road over Delta-Mendota Canal is a concrete continuous tee beam carrying Marshall Road over Delta-Mendota Canal in Stanislaus County, California. It was built in 1949, so it is 76 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 1,216 vehicles a day, roughly 21% of them trucks, projected to reach 1,500 by 2042. The structure is 106 ft (32.3 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesMarshall Road
CrossesDelta-Mendota Canal
Location0.4 MI East of Ward Ave
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.43531, -121.13364
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating18.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length106 ft (32.3 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,216 (2016)
Projected traffic1,500 by 2042
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Marshall Road over Delta-Mendota Canal built?

It was built in 1949, making it 76 years old in 2025.

What condition is Marshall Road over Delta-Mendota 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 August 2024.

How much traffic does Marshall Road over Delta-Mendota Canal carry?

About 1,216 vehicles per day (2016 count), of which roughly 21% are trucks.

How long is Marshall Road over Delta-Mendota Canal?

The structure is 106 ft (32.3 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns Marshall Road over Delta-Mendota Canal?

It is owned by the County Highway Agency.