US Bridges

Weber ST over Mormon Slough

Fair

San Joaquin County, California · 0.3 MI W Lincoln ST · Structure no. 29C0088

Built
1969
56 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
152 ft
6 main spans
Daily traffic
6,100
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Weber ST over Mormon Slough is a concrete continuous culvert carrying Weber ST over Mormon Slough in San Joaquin County, California. It was built in 1969, so it is 56 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 6,100 vehicles a day, roughly 5% of them trucks, projected to reach 7,544 by 2047. The structure is 152 ft (46.3 m) long and 110 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesWeber ST
CrossesMormon Slough
Location0.3 MI W Lincoln ST
RouteCity Street 0
CountySan Joaquin County
StateCalifornia
Coordinates37.95147, -121.30367
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
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 typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span13 ft (4 m)
Deck width110 ft (33.5 m)
Roadway width94 ft (28.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2005)
Projected traffic7,544 by 2047
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and railroad
CrossesWaterway
Detour if closed3.1 mi (5 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 Weber ST over Mormon Slough built?

It was built in 1969, making it 56 years old in 2025.

What condition is Weber ST over Mormon Slough 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 Weber ST over Mormon Slough carry?

About 6,100 vehicles per day (2005 count), of which roughly 5% are trucks.

How long is Weber ST over Mormon Slough?

The structure is 152 ft (46.3 m) long with a longest span of 13 ft (4 m) and a deck 110 ft wide.

Who owns Weber ST over Mormon Slough?

It is owned by the City or Municipal Highway Agency.