US Bridges

South Side Road over Tres Pinos Creek

Good

San Benito County, California · Near Junction W/Thomas RD · Structure no. 43C0059

Built
2004
21 years old
Condition
Good
inspected November 2022
Type
Slab
Concrete Continuous
Length
352 ft
10 main spans
Daily traffic
1,000
2010 count
Owner
County
County Highway Agency

About this bridge

South Side Road over Tres Pinos Creek is a concrete continuous slab carrying South Side Road over Tres Pinos Creek in San Benito County, California. It was built in 2004, so it is 21 years old, younger 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,145 by 2041. The structure is 352 ft (107.4 m) long and 33 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

CarriesSouth Side Road
CrossesTres Pinos Creek
LocationNear Junction W/Thomas RD
RouteCounty Highway 0
Coordinates36.78847, -121.36001
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20 + Mod
Structure length352 ft (107.4 m)
Longest span36 ft (11 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2010)
Projected traffic1,145 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 South Side Road over Tres Pinos Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is South Side Road over Tres Pinos 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 November 2022.

How much traffic does South Side Road over Tres Pinos Creek carry?

About 1,000 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is South Side Road over Tres Pinos Creek?

The structure is 352 ft (107.4 m) long with a longest span of 36 ft (11 m) and a deck 33 ft wide.

Who owns South Side Road over Tres Pinos Creek?

It is owned by the County Highway Agency.