US Bridges

Rocks Road over Pinacate Rock Creek

Fair

San Benito County, California · East Little Merrill RD · Structure no. 43C0053

Built
1930
95 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Concrete
Length
23 ft
1 main span
Daily traffic
1,200
2010 count
Owner
County
County Highway Agency

About this bridge

Rocks Road over Pinacate Rock Creek is a concrete tee beam carrying Rocks Road over Pinacate Rock Creek in San Benito County, California. It was built in 1930, so it is 95 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 1,200 vehicles a day, roughly 5% of them trucks, projected to reach 1,380 by 2047. The structure is 23 ft (7 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRocks Road
CrossesPinacate Rock Creek
LocationEast Little Merrill RD
RouteCounty Highway 0
CountySan Benito County
StateCalifornia
Coordinates36.85439, -121.58975
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2010)
Projected traffic1,380 by 2047
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Rocks Road over Pinacate Rock Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Rocks Road over Pinacate Rock 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 January 2025.

How much traffic does Rocks Road over Pinacate Rock Creek carry?

About 1,200 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is Rocks Road over Pinacate Rock Creek?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns Rocks Road over Pinacate Rock Creek?

It is owned by the County Highway Agency.