US Bridges

Interstate 580 EB over Valpico Road

Fair

San Joaquin County, California · 10-SJ-580-9.71 · Structure no. 29 0165L

Built
1966
59 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
74 ft
3 main spans
Daily traffic
13,300
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 580 EB over Valpico Road is a concrete continuous slab carrying Interstate 580 EB over Valpico Road in San Joaquin County, California. It was built in 1966, so it is 59 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 13,300 vehicles a day, roughly 14% of them trucks, projected to reach 27,270 by 2046. The structure is 74 ft (22.6 m) long and 42 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesInterstate 580 EB
CrossesValpico Road
Location10-SJ-580-9.71
RouteInterstate 580
Coordinates37.68586, -121.47996
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length74 ft (22.6 m)
Longest span30 ft (9.1 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,300 (2009)
Projected traffic27,270 by 2046
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 580 EB over Valpico Road built?

It was built in 1966, making it 59 years old in 2025.

What condition is Interstate 580 EB over Valpico Road 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 March 2024.

How much traffic does Interstate 580 EB over Valpico Road carry?

About 13,300 vehicles per day (2009 count), of which roughly 14% are trucks.

How long is Interstate 580 EB over Valpico Road?

The structure is 74 ft (22.6 m) long with a longest span of 30 ft (9.1 m) and a deck 42 ft wide.

Who owns Interstate 580 EB over Valpico Road?

It is owned by the State Highway Agency.