US Bridges

Mariposa RD Drivwy over Duck Creek S Branch

Fair

San Joaquin County, California · Driveway SE Carpenter RD · Structure no. 29C0387

Built
1974
51 years old
Condition
Fair
inspected September 2022
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
60
2003 count
Owner
County
County Highway Agency

About this bridge

Mariposa RD Drivwy over Duck Creek S Branch is a concrete continuous culvert carrying Mariposa RD Drivwy over Duck Creek S Branch in San Joaquin County, California. It was built in 1974, so it is 51 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 60 vehicles a day, roughly 2% of them trucks, projected to reach 82 by 2044. The structure is 22 ft (6.7 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMariposa RD Drivwy
CrossesDuck Creek S Branch
LocationDriveway SE Carpenter RD
RouteCounty Highway 0
Coordinates37.92744, -121.21423
Functional classRural 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
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 length22 ft (6.7 m)
Longest span10 ft (3.1 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2003)
Projected traffic82 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mariposa RD Drivwy over Duck Creek S Branch built?

It was built in 1974, making it 51 years old in 2025.

What condition is Mariposa RD Drivwy over Duck Creek S Branch 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 September 2022.

How much traffic does Mariposa RD Drivwy over Duck Creek S Branch carry?

About 60 vehicles per day (2003 count), of which roughly 2% are trucks.

How long is Mariposa RD Drivwy over Duck Creek S Branch?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.1 m) and a deck 32 ft wide.

Who owns Mariposa RD Drivwy over Duck Creek S Branch?

It is owned by the County Highway Agency.