US Bridges

W580-CENTRAL Off over Central Ave

Poor

Contra Costa County, California · 04-CC-580-0.04-RCH · Structure no. 28 0231J

Built
1991
34 years old
Condition
Poor
inspected March 2024
Type
Slab
Concrete Continuous
Length
449 ft
15 main spans
Daily traffic
4,300
2011 count
Owner
State
State Highway Agency

About this bridge

W580-CENTRAL Off over Central Ave is a concrete continuous slab carrying W580-CENTRAL Off over Central Ave in Contra Costa 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 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 4,300 vehicles a day, roughly 5% of them trucks, projected to reach 4,846 by 2042. The structure is 449 ft (137 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW580-CENTRAL Off
CrossesCentral Ave
Location04-CC-580-0.04-RCH
RouteInterstate 580
CountyContra Costa County
StateCalifornia
Coordinates37.89803, -122.31209
Functional classUrban 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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating26.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans15
Design loadHS 20 + Mod
Structure length449 ft (137 m)
Longest span30 ft (9.1 m)
Deck width26 ft (7.8 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2011)
Projected traffic4,846 by 2042
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.8 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was W580-CENTRAL Off over Central Ave built?

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

What condition is W580-CENTRAL Off over Central Ave 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 March 2024.

How much traffic does W580-CENTRAL Off over Central Ave carry?

About 4,300 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is W580-CENTRAL Off over Central Ave?

The structure is 449 ft (137 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns W580-CENTRAL Off over Central Ave?

It is owned by the State Highway Agency.