US Bridges

S 242 on Ramp over Ebmud Service Road

Fair

Contra Costa County, California · 04-CC-242-R2.77-CND · Structure no. 28 0268K

Built
1978
47 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
6,300
2009 count
Owner
State
State Highway Agency

About this bridge

S 242 on Ramp over Ebmud Service Road is a concrete slab carrying S 242 on Ramp over Ebmud Service Road in Contra Costa County, California. It was built in 1978, so it is 47 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 6,300 vehicles a day, roughly 2% of them trucks, projected to reach 9,563 by 2044. The structure is 24 ft (7.3 m) long and 26 ft wide.

Location

Open in Google Maps
CarriesS 242 on Ramp
CrossesEbmud Service Road
Location04-CC-242-R2.77-CND
RouteState Highway 242
CountyContra Costa County
StateCalifornia
Coordinates37.99734, -122.03935
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 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 alignment6: Equal to present minimum criteria
Operating rating89 US tons
Inventory rating53.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2009)
Projected traffic9,563 by 2044
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 S 242 on Ramp over Ebmud Service Road built?

It was built in 1978, making it 47 years old in 2025.

What condition is S 242 on Ramp over Ebmud Service Road 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 S 242 on Ramp over Ebmud Service Road carry?

About 6,300 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is S 242 on Ramp over Ebmud Service Road?

The structure is 24 ft (7.3 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns S 242 on Ramp over Ebmud Service Road?

It is owned by the State Highway Agency.