US Bridges

Montpelier Road over High Line Canal

Fair

Stanislaus County, California · 1.85 MI NW of Keyes RD · Structure no. 38C0072

Built
1966
59 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
2 main spans
Daily traffic
1,541
2015 count
Owner
County
County Highway Agency

About this bridge

Montpelier Road over High Line Canal is a steel stringer/multi-beam or girder carrying Montpelier Road over High Line Canal in Stanislaus County, California. It was built in 1966, so it is 59 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 6 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 1,541 vehicles a day, roughly 26% of them trucks, projected to reach 1,800 by 2043. The structure is 41 ft (12.6 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesMontpelier Road
CrossesHigh Line Canal
Location1.85 MI NW of Keyes RD
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.57436, -120.72877
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length41 ft (12.6 m)
Longest span20 ft (6 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,541 (2015)
Projected traffic1,800 by 2043
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 High Line Canal built?

It was built in 1966, making it 59 years old in 2025.

What condition is Montpelier Road over High Line 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 Montpelier Road over High Line Canal carry?

About 1,541 vehicles per day (2015 count), of which roughly 26% are trucks.

How long is Montpelier Road over High Line Canal?

The structure is 41 ft (12.6 m) long with a longest span of 20 ft (6 m) and a deck 35 ft wide.

Who owns Montpelier Road over High Line Canal?

It is owned by the County Highway Agency.