US Bridges

Murphy Road over Tres Pinos Creek

Fair

San Benito County, California · East of SR 25 · Structure no. 43C0046

Built
1960
65 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
195 ft
5 main spans
Daily traffic
200
2010 count
Owner
County
County Highway Agency

About this bridge

Murphy Road over Tres Pinos Creek is a steel stringer/multi-beam or girder carrying Murphy Road over Tres Pinos Creek in San Benito County, California. It was built in 1960, so it is 65 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 260 by 2042. The structure is 195 ft (59.3 m) long and 15 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesMurphy Road
CrossesTres Pinos Creek
LocationEast of SR 25
RouteCounty Highway 0
CountySan Benito County
StateCalifornia
Coordinates36.74408, -121.27876
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating23.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length195 ft (59.3 m)
Longest span39 ft (11.8 m)
Deck width15 ft (4.7 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2010)
Projected traffic260 by 2042
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Murphy Road over Tres Pinos Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Murphy Road over Tres Pinos 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 November 2024.

How much traffic does Murphy Road over Tres Pinos Creek carry?

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

How long is Murphy Road over Tres Pinos Creek?

The structure is 195 ft (59.3 m) long with a longest span of 39 ft (11.8 m) and a deck 15 ft wide.

Who owns Murphy Road over Tres Pinos Creek?

It is owned by the County Highway Agency.