US Bridges

W580-N238 Connectr over Interstate 238 NB

Fair

Alameda County, California · 04-ALA-580-R30.80 · Structure no. 33 0525G

Built
1991
34 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
430 ft
4 main spans
Daily traffic
79,000
2017 count
Owner
State
State Highway Agency

About this bridge

W580-N238 Connectr over Interstate 238 NB is a prestressed concrete continuous box beam or girders - multiple carrying W580-N238 Connectr over Interstate 238 NB in Alameda County, California. It was built in 1991, so it is 34 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 79,000 vehicles a day, roughly 12% of them trucks, projected to reach 85,791 by 2042. The structure is 430 ft (131.1 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesW580-N238 Connectr
CrossesInterstate 238 NB
Location04-ALA-580-R30.80
RouteInterstate 580
Coordinates37.69049, -122.09618
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
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 spans4
Design loadHS 20 + Mod
Structure length430 ft (131.1 m)
Longest span123 ft (37.5 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79,000 (2017)
Projected traffic85,791 by 2042
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 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 W580-N238 Connectr over Interstate 238 NB built?

It was built in 1991, making it 34 years old in 2025.

What condition is W580-N238 Connectr over Interstate 238 NB 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 W580-N238 Connectr over Interstate 238 NB carry?

About 79,000 vehicles per day (2017 count), of which roughly 12% are trucks.

How long is W580-N238 Connectr over Interstate 238 NB?

The structure is 430 ft (131.1 m) long with a longest span of 123 ft (37.5 m) and a deck 42 ft wide.

Who owns W580-N238 Connectr over Interstate 238 NB?

It is owned by the State Highway Agency.