US Bridges

State Route 4 EB over W4-S242 Connector Ramp

Fair

Contra Costa County, California · 04-CC-004-R14.62-CND · Structure no. 28 0243R

Built
1978
47 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
390 ft
3 main spans
Daily traffic
31,000
2018 count
Owner
State
State Highway Agency

About this bridge

State Route 4 EB over W4-S242 Connector Ramp is a prestressed concrete continuous box beam or girders - multiple carrying State Route 4 EB over W4-S242 Connector Ramp 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 31,000 vehicles a day, roughly 7% of them trucks, projected to reach 63,819 by 2042. The structure is 390 ft (119 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesState Route 4 EB
CrossesW4-S242 Connector Ramp
Location04-CC-004-R14.62-CND
RouteState Highway 4
CountyContra Costa County
StateCalifornia
Coordinates38.00534, -122.0369
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJune 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 geometry9: Superior to present desirable 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 Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length390 ft (119 m)
Longest span182 ft (55.5 m)
Deck width54 ft (16.4 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,000 (2018)
Projected traffic63,819 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 State Route 4 EB over W4-S242 Connector Ramp built?

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

What condition is State Route 4 EB over W4-S242 Connector Ramp 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 June 2024.

How much traffic does State Route 4 EB over W4-S242 Connector Ramp carry?

About 31,000 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is State Route 4 EB over W4-S242 Connector Ramp?

The structure is 390 ft (119 m) long with a longest span of 182 ft (55.5 m) and a deck 54 ft wide.

Who owns State Route 4 EB over W4-S242 Connector Ramp?

It is owned by the State Highway Agency.