US Bridges

Hewitt Road over South Branch Duck Creek

Good

San Joaquin County, California · 0.7 MI N SH 4 · Structure no. 29C0130

Built
1963
62 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
87 ft
3 main spans
Daily traffic
270
2007 count
Owner
County
County Highway Agency

About this bridge

Hewitt Road over South Branch Duck Creek is a concrete continuous slab carrying Hewitt Road over South Branch Duck Creek in San Joaquin County, California. It was built in 1963, so it is 62 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 270 vehicles a day, roughly 5% of them trucks, projected to reach 272 by 2041. The structure is 87 ft (26.4 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesHewitt Road
CrossesSouth Branch Duck Creek
Location0.7 MI N SH 4
RouteCounty Highway 0
Coordinates37.93843, -121.03844
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length87 ft (26.4 m)
Longest span28 ft (8.5 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (2007)
Projected traffic272 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Hewitt Road over South Branch Duck Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Hewitt Road over South Branch Duck Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

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

About 270 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is Hewitt Road over South Branch Duck Creek?

The structure is 87 ft (26.4 m) long with a longest span of 28 ft (8.5 m) and a deck 32 ft wide.

Who owns Hewitt Road over South Branch Duck Creek?

It is owned by the County Highway Agency.