US Bridges

American Avenue over M.I.D. Main Canal

Fair

Stanislaus County, California · 0.3 MI S of Ladd Road · Structure no. 38C0110

Built
1935
90 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
139
2018 count
Owner
County
County Highway Agency

About this bridge

American Avenue over M.I.D. Main Canal is a concrete continuous slab carrying American Avenue over M.I.D. Main Canal in Stanislaus County, California. It was built in 1935, so it is 90 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 139 vehicles a day, roughly 15% of them trucks, projected to reach 315 by 2046. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAmerican Avenue
CrossesM.I.D. Main Canal
Location0.3 MI S of Ladd Road
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.72812, -121.04124
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span14 ft (4.4 m)
Deck width23 ft (6.9 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic139 (2018)
Projected traffic315 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 American Avenue over M.I.D. Main Canal built?

It was built in 1935, making it 90 years old in 2025.

What condition is American Avenue 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 2024.

How much traffic does American Avenue over M.I.D. Main Canal carry?

About 139 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is American Avenue over M.I.D. Main Canal?

The structure is 31 ft (9.4 m) long with a longest span of 14 ft (4.4 m) and a deck 23 ft wide.

Who owns American Avenue over M.I.D. Main Canal?

It is owned by the County Highway Agency.