US Bridges

Mountain House RD over Delta-Mendota Canal

Fair

San Joaquin County, California · 0.8 MI S of I-205 · Structure no. 29C0335

Built
1993
32 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
171 ft
2 main spans
Daily traffic
7,819
2007 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mountain House RD over Delta-Mendota Canal is a prestressed concrete continuous stringer/multi-beam or girder carrying Mountain House RD over Delta-Mendota Canal in San Joaquin County, California. It was built in 1993, so it is 32 years old, younger 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 7,819 vehicles a day, roughly 15% of them trucks, projected to reach 9,367 by 2046. The structure is 171 ft (52.1 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesMountain House RD
CrossesDelta-Mendota Canal
Location0.8 MI S of I-205
RouteCounty Highway 0
CountySan Joaquin County
StateCalifornia
Coordinates37.72998, -121.53126
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length171 ft (52.1 m)
Longest span137 ft (41.8 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,819 (2007)
Projected traffic9,367 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mountain House RD over Delta-Mendota Canal built?

It was built in 1993, making it 32 years old in 2025.

What condition is Mountain House RD 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 June 2024.

How much traffic does Mountain House RD over Delta-Mendota Canal carry?

About 7,819 vehicles per day (2007 count), of which roughly 15% are trucks.

How long is Mountain House RD over Delta-Mendota Canal?

The structure is 171 ft (52.1 m) long with a longest span of 137 ft (41.8 m) and a deck 33 ft wide.

Who owns Mountain House RD over Delta-Mendota Canal?

It is owned by the City or Municipal Highway Agency.