US Bridges

Tam Oshanter DR over Mosher Slough

Fair

San Joaquin County, California · 0.5 MI N Hammer Lane · Structure no. 29C0394

Built
1981
44 years old
Condition
Fair
inspected December 2021
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
7,968
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Tam Oshanter DR over Mosher Slough is a concrete continuous culvert carrying Tam Oshanter DR over Mosher Slough in San Joaquin County, California. It was built in 1981, so it is 44 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 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 7,968 vehicles a day, roughly 5% of them trucks, projected to reach 14,668 by 2038. The structure is 31 ft (9.4 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesTam Oshanter DR
CrossesMosher Slough
Location0.5 MI N Hammer Lane
RouteCity Street 0
CountySan Joaquin County
StateCalifornia
Coordinates38.02809, -121.30048
Functional classUrban 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span15 ft (4.5 m)
Deck width51 ft (15.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,968 (2010)
Projected traffic14,668 by 2038
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Tam Oshanter DR over Mosher Slough built?

It was built in 1981, making it 44 years old in 2025.

What condition is Tam Oshanter DR over Mosher 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 December 2021.

How much traffic does Tam Oshanter DR over Mosher Slough carry?

About 7,968 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is Tam Oshanter DR over Mosher Slough?

The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.5 m) and a deck 51 ft wide.

Who owns Tam Oshanter DR over Mosher Slough?

It is owned by the City or Municipal Highway Agency.