US Bridges

Montpelier Road over T.I.D. Main Canal

Fair

Stanislaus County, California · At Dallas RD · Structure no. 38C0157

Built
1920
105 years old
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
1,500
2016 count
Owner
County
County Highway Agency

About this bridge

Montpelier Road over T.I.D. Main Canal is a concrete continuous tee beam carrying Montpelier Road over T.I.D. Main Canal in Stanislaus County, California. It was built in 1920, so it is 105 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 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 1,836 by 2043. The structure is 81 ft (24.7 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMontpelier Road
CrossesT.I.D. Main Canal
LocationAt Dallas RD
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.61439, -120.74933
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating22.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length81 ft (24.7 m)
Longest span27 ft (8.2 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2016)
Projected traffic1,836 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Montpelier Road over T.I.D. Main Canal built?

It was built in 1920, making it 105 years old in 2025.

What condition is Montpelier Road over T.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 February 2025.

How much traffic does Montpelier Road over T.I.D. Main Canal carry?

About 1,500 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Montpelier Road over T.I.D. Main Canal?

The structure is 81 ft (24.7 m) long with a longest span of 27 ft (8.2 m) and a deck 23 ft wide.

Who owns Montpelier Road over T.I.D. Main Canal?

It is owned by the County Highway Agency.