US Bridges

Contra Costa Bl NB over Contra COSTA-S680 on Rmp

Fair

Contra Costa County, California · 04-CC-680-R17.44-PLHL · Structure no. 28 0325K

Built
1998
27 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,164 ft
8 main spans
Daily traffic
5,000
2000 count
Owner
State
State Highway Agency

About this bridge

Contra Costa Bl NB over Contra COSTA-S680 on Rmp is a prestressed concrete continuous box beam or girders - multiple carrying Contra Costa Bl NB over Contra COSTA-S680 on Rmp in Contra Costa County, California. It was built in 1998, so it is 27 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 5,000 vehicles a day, roughly 3% of them trucks, projected to reach 6,674 by 2047. The structure is 1,164 ft (354.8 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesContra Costa Bl NB
CrossesContra COSTA-S680 on Rmp
Location04-CC-680-R17.44-PLHL
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.93944, -122.0607
Functional classUrban Minor Arterial

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.
Last inspectionJanuary 2025
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length1,164 ft (354.8 m)
Longest span180 ft (54.9 m)
Deck width34 ft (10.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2000)
Projected traffic6,674 by 2047
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Contra Costa Bl NB over Contra COSTA-S680 on Rmp built?

It was built in 1998, making it 27 years old in 2025.

What condition is Contra Costa Bl NB over Contra COSTA-S680 on Rmp 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 January 2025.

How much traffic does Contra Costa Bl NB over Contra COSTA-S680 on Rmp carry?

About 5,000 vehicles per day (2000 count), of which roughly 3% are trucks.

How long is Contra Costa Bl NB over Contra COSTA-S680 on Rmp?

The structure is 1,164 ft (354.8 m) long with a longest span of 180 ft (54.9 m) and a deck 34 ft wide.

Who owns Contra Costa Bl NB over Contra COSTA-S680 on Rmp?

It is owned by the State Highway Agency.