US Bridges

Canal BL-W580 Onrp over BNSF RY & Garrard Blvd

Poor

Contra Costa County, California · 04-CC-580-R4.81-RCH · Structure no. 28 0056S

Built
1980
45 years old, rebuilt 1991
Condition
Poor
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
906 ft
2 main spans
Daily traffic
2,450
2011 count
Owner
State
State Highway Agency

About this bridge

Canal BL-W580 Onrp over BNSF RY & Garrard Blvd is a prestressed concrete continuous box beam or girders - multiple carrying Canal BL-W580 Onrp over BNSF RY & Garrard Blvd in Contra Costa County, California. It was built in 1980 and reconstructed in 1991, so it is 45 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 2,450 vehicles a day, roughly 11% of them trucks, projected to reach 5,379 by 2042. The structure is 906 ft (276.1 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCanal BL-W580 Onrp
CrossesBNSF RY & Garrard Blvd
Location04-CC-580-R4.81-RCH
RouteInterstate 580
Coordinates37.92787, -122.38071
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
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 spans2 (+6 approach)
Design loadHS 20 + Mod
Structure length906 ft (276.1 m)
Longest span150 ft (45.7 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,450 (2011)
Projected traffic5,379 by 2042
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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$5.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Canal BL-W580 Onrp over BNSF RY & Garrard Blvd built?

It was built in 1980, making it 45 years old in 2025. It was reconstructed in 1991.

What condition is Canal BL-W580 Onrp over BNSF RY & Garrard Blvd 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 Canal BL-W580 Onrp over BNSF RY & Garrard Blvd carry?

About 2,450 vehicles per day (2011 count), of which roughly 11% are trucks.

How long is Canal BL-W580 Onrp over BNSF RY & Garrard Blvd?

The structure is 906 ft (276.1 m) long with a longest span of 150 ft (45.7 m) and a deck 39 ft wide.

Who owns Canal BL-W580 Onrp over BNSF RY & Garrard Blvd?

It is owned by the State Highway Agency.