US Bridges

Interstate 580 WB over UP RR & Ace

Poor

San Joaquin County, California · 10-SJ-580-11.51 · Structure no. 29 0083R

Built
1967
58 years old
Condition
Poor
inspected April 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
182 ft
3 main spans
Daily traffic
13,300
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 580 WB over UP RR & Ace is a concrete continuous box beam or girders - multiple carrying Interstate 580 WB over UP RR & Ace in San Joaquin County, California. It was built in 1967, so it is 58 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 13,300 vehicles a day, roughly 14% of them trucks, projected to reach 27,270 by 2046. The structure is 182 ft (55.4 m) long and 42 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesInterstate 580 WB
CrossesUP RR & Ace
Location10-SJ-580-11.51
RouteInterstate 580
Coordinates37.70185, -121.50571
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, 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 inspectionApril 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 rating49.6 US tons
Inventory rating38.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length182 ft (55.4 m)
Longest span68 ft (20.7 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
CrossesRailroad
Detour if closed14.3 mi (23 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 580 WB over UP RR & Ace built?

It was built in 1967, making it 58 years old in 2025.

What condition is Interstate 580 WB over UP RR & Ace in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Interstate 580 WB over UP RR & Ace carry?

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

How long is Interstate 580 WB over UP RR & Ace?

The structure is 182 ft (55.4 m) long with a longest span of 68 ft (20.7 m) and a deck 42 ft wide.

Who owns Interstate 580 WB over UP RR & Ace?

It is owned by the State Highway Agency.