US Bridges

State Route 580 over Rust Drain

Fair

Contra Costa County, California · 04-CC-580-0.72-RCH · Structure no. 28 0090

Built
1991
34 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
54 ft
2 main spans
Daily traffic
84,500
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 580 over Rust Drain is a concrete continuous slab carrying State Route 580 over Rust Drain 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 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 84,500 vehicles a day, projected to reach 138,699 by 2046. The structure is 54 ft (16.5 m) long and 110 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesState Route 580
CrossesRust Drain
Location04-CC-580-0.72-RCH
RouteInterstate 580
Coordinates37.90598, -122.31865
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length54 ft (16.5 m)
Longest span27 ft (8.3 m)
Deck width110 ft (33.5 m)
Roadway width106 ft (32.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic84,500 (2009)
Projected traffic138,699 by 2046
Trucks0%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 580 over Rust Drain built?

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

What condition is State Route 580 over Rust Drain 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 State Route 580 over Rust Drain carry?

About 84,500 vehicles per day (2009 count).

How long is State Route 580 over Rust Drain?

The structure is 54 ft (16.5 m) long with a longest span of 27 ft (8.3 m) and a deck 110 ft wide.

Who owns State Route 580 over Rust Drain?

It is owned by the State Highway Agency.