US Bridges

Route 580 over Piedmont Broadway Rich

Fair

Alameda County, California · 04-ALA-580-44.51-OAK · Structure no. 33 0285

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
1,066 ft
10 main spans
Daily traffic
201,000
2017 count
Owner
State
State Highway Agency

About this bridge

Route 580 over Piedmont Broadway Rich is a concrete continuous box beam or girders - multiple carrying Route 580 over Piedmont Broadway Rich in Alameda County, California. It was built in 1961, so it is 64 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 201,000 vehicles a day, roughly 1% of them trucks, projected to reach 307,070 by 2042. The structure is 1,066 ft (325 m) long and 148 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoute 580
CrossesPiedmont Broadway Rich
Location04-ALA-580-44.51-OAK
RouteInterstate 580
CountyAlameda County
StateCalifornia
Coordinates37.82108, -122.25676
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating47.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10 (+3 approach)
Design loadHS 20
Structure length1,066 ft (325 m)
Longest span117 ft (35.7 m)
Deck width148 ft (45.1 m)
Roadway width140 ft (42.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic201,000 (2017)
Projected traffic307,070 by 2042
Trucks1%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Route 580 over Piedmont Broadway Rich built?

It was built in 1961, making it 64 years old in 2025.

What condition is Route 580 over Piedmont Broadway Rich 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 August 2024.

How much traffic does Route 580 over Piedmont Broadway Rich carry?

About 201,000 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Route 580 over Piedmont Broadway Rich?

The structure is 1,066 ft (325 m) long with a longest span of 117 ft (35.7 m) and a deck 148 ft wide.

Who owns Route 580 over Piedmont Broadway Rich?

It is owned by the State Highway Agency.