US Bridges

Drais Road over South Branch Duck Creek

Fair

San Joaquin County, California · State Highway 4 · Structure no. 29C0350

Built
1961
64 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
57 ft
3 main spans
Daily traffic
231
2013 count
Owner
County
County Highway Agency

About this bridge

Drais Road over South Branch Duck Creek is a concrete continuous slab carrying Drais Road over South Branch Duck Creek in San Joaquin County, California. It was built in 1961, so it is 64 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 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 231 vehicles a day, roughly 5% of them trucks, projected to reach 382 by 2041. The structure is 57 ft (17.4 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesDrais Road
CrossesSouth Branch Duck Creek
LocationState Highway 4
RouteCounty Highway 0
CountySan Joaquin County
StateCalifornia
Coordinates37.93481, -121.08427
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span22 ft (6.7 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic231 (2013)
Projected traffic382 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Drais Road over South Branch Duck Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Drais Road over South Branch Duck Creek 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 March 2023.

How much traffic does Drais Road over South Branch Duck Creek carry?

About 231 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is Drais Road over South Branch Duck Creek?

The structure is 57 ft (17.4 m) long with a longest span of 22 ft (6.7 m) and a deck 32 ft wide.

Who owns Drais Road over South Branch Duck Creek?

It is owned by the County Highway Agency.