US Bridges

Interstate 580 EB over Redwood Road

Fair

Alameda County, California · 04-ALA-580-R29.37 · Structure no. 33 0193L

Built
1986
39 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
171 ft
1 main span
Daily traffic
103,500
2017 count
Owner
State
State Highway Agency

About this bridge

Interstate 580 EB over Redwood Road is a prestressed concrete box beam or girders - multiple carrying Interstate 580 EB over Redwood Road in Alameda County, California. It was built in 1986, so it is 39 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 103,500 vehicles a day, roughly 12% of them trucks, projected to reach 119,272 by 2046. The structure is 171 ft (52 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 580 EB
CrossesRedwood Road
Location04-ALA-580-R29.37
RouteInterstate 580
Coordinates37.69066, -122.07344
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length171 ft (52 m)
Longest span168 ft (51.2 m)
Deck width81 ft (24.6 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic103,500 (2017)
Projected traffic119,272 by 2046
Trucks12%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 Redwood Road built?

It was built in 1986, making it 39 years old in 2025.

What condition is Interstate 580 EB over Redwood 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 Redwood Road carry?

About 103,500 vehicles per day (2017 count), of which roughly 12% are trucks.

How long is Interstate 580 EB over Redwood Road?

The structure is 171 ft (52 m) long with a longest span of 168 ft (51.2 m) and a deck 81 ft wide.

Who owns Interstate 580 EB over Redwood Road?

It is owned by the State Highway Agency.