US Bridges

I 580 EB over I 238 NB Conns Castro Vl

Fair

Alameda County, California · 04-ALA-580-R30.59 · Structure no. 33 0214L

Built
1988
37 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
2,030 ft
14 main spans
Daily traffic
102,000
2017 count
Owner
State
State Highway Agency

About this bridge

I 580 EB over I 238 NB Conns Castro Vl is a prestressed concrete continuous box beam or girders - multiple carrying I 580 EB over I 238 NB Conns Castro Vl in Alameda County, California. It was built in 1988, so it is 37 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 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 102,000 vehicles a day, roughly 6% of them trucks, projected to reach 110,289 by 2042. The structure is 2,030 ft (618.7 m) long and 54 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI 580 EB
CrossesI 238 NB Conns Castro Vl
Location04-ALA-580-R30.59
RouteInterstate 580
CountyAlameda County
StateCalifornia
Coordinates37.69019, -122.09335
Functional classUrban 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
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.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadHS 20 + Mod
Structure length2,030 ft (618.7 m)
Longest span197 ft (60 m)
Deck width54 ft (16.6 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102,000 (2017)
Projected traffic110,289 by 2042
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 I 580 EB over I 238 NB Conns Castro Vl built?

It was built in 1988, making it 37 years old in 2025.

What condition is I 580 EB over I 238 NB Conns Castro Vl 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 April 2024.

How much traffic does I 580 EB over I 238 NB Conns Castro Vl carry?

About 102,000 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is I 580 EB over I 238 NB Conns Castro Vl?

The structure is 2,030 ft (618.7 m) long with a longest span of 197 ft (60 m) and a deck 54 ft wide.

Who owns I 580 EB over I 238 NB Conns Castro Vl?

It is owned by the State Highway Agency.