US Bridges

SB SR 242 Offramp over Rv Storage

Fair

Contra Costa County, California · 04-CC-242-R1.70-CND · Structure no. 28 0186K

Built
1996
29 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
159 ft
1 main span
Daily traffic
18,300
2008 count
Owner
State
State Highway Agency

About this bridge

SB SR 242 Offramp over Rv Storage is a prestressed concrete box beam or girders - multiple carrying SB SR 242 Offramp over Rv Storage in Contra Costa County, California. It was built in 1996, so it is 29 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 6 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 18,300 vehicles a day, roughly 5% of them trucks, projected to reach 7,883 by 2042. The structure is 159 ft (48.6 m) long and 39 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSB SR 242 Offramp
CrossesRv Storage
Location04-CC-242-R1.70-CND
RouteState Highway 242
CountyContra Costa County
StateCalifornia
Coordinates37.98122, -122.04246
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
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

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length159 ft (48.6 m)
Longest span150 ft (45.6 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,300 (2008)
Projected traffic7,883 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed5.6 mi (9 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 SB SR 242 Offramp over Rv Storage built?

It was built in 1996, making it 29 years old in 2025.

What condition is SB SR 242 Offramp over Rv Storage 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 2024.

How much traffic does SB SR 242 Offramp over Rv Storage carry?

About 18,300 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is SB SR 242 Offramp over Rv Storage?

The structure is 159 ft (48.6 m) long with a longest span of 150 ft (45.6 m) and a deck 39 ft wide.

Who owns SB SR 242 Offramp over Rv Storage?

It is owned by the State Highway Agency.