US Bridges

Escalon Bellota RD over Mormon Slough

Poor

San Joaquin County, California · S/E of S.H. 26 · Structure no. 29C0051

Built
1966
59 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete Continuous
Length
223 ft
9 main spans
Daily traffic
2,430
2013 count
Owner
County
County Highway Agency

About this bridge

Escalon Bellota RD over Mormon Slough is a concrete continuous slab carrying Escalon Bellota RD over Mormon Slough in San Joaquin 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,430 vehicles a day, roughly 25% of them trucks, projected to reach 1,390 by 2047. The structure is 223 ft (68 m) long and 41 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesEscalon Bellota RD
CrossesMormon Slough
LocationS/E of S.H. 26
RouteCounty Highway 0
Coordinates38.04929, -121.01413
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.9 US tons
Inventory rating34.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length223 ft (68 m)
Longest span26 ft (7.9 m)
Deck width41 ft (12.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,430 (2013)
Projected traffic1,390 by 2047
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.4 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Escalon Bellota RD over Mormon Slough built?

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

What condition is Escalon Bellota RD over Mormon Slough in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Escalon Bellota RD over Mormon Slough carry?

About 2,430 vehicles per day (2013 count), of which roughly 25% are trucks.

How long is Escalon Bellota RD over Mormon Slough?

The structure is 223 ft (68 m) long with a longest span of 26 ft (7.9 m) and a deck 41 ft wide.

Who owns Escalon Bellota RD over Mormon Slough?

It is owned by the County Highway Agency.