US Bridges

Nash Road over San Benito River

Fair

San Benito County, California · SW of Westside Blvd · Structure no. 43C0061

Built
2007
18 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
285 ft
3 main spans
Daily traffic
1,500
2010 count
Owner
County
County Highway Agency

About this bridge

Nash Road over San Benito River is a prestressed concrete continuous box beam or girders - multiple carrying Nash Road over San Benito River in San Benito County, California. It was built in 2007, so it is 18 years old, younger 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 6 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 1,500 vehicles a day, roughly 5% of them trucks, projected to reach 2,088 by 2042. The structure is 285 ft (87 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNash Road
CrossesSan Benito River
LocationSW of Westside Blvd
RouteCity Street 0
Coordinates36.83844, -121.41702
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 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

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length285 ft (87 m)
Longest span115 ft (35 m)
Deck width42 ft (12.8 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2010)
Projected traffic2,088 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Nash Road over San Benito River built?

It was built in 2007, making it 18 years old in 2025.

What condition is Nash Road over San Benito River 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 Nash Road over San Benito River carry?

About 1,500 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is Nash Road over San Benito River?

The structure is 285 ft (87 m) long with a longest span of 115 ft (35 m) and a deck 42 ft wide.

Who owns Nash Road over San Benito River?

It is owned by the County Highway Agency.