US Bridges

State Route 4 EB over Mcewen Road

Fair

Contra Costa County, California · 04-CC-004-R5.17 · Structure no. 28 0215R

Built
1967
58 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
147 ft
3 main spans
Daily traffic
23,000
2018 count
Owner
State
State Highway Agency

About this bridge

State Route 4 EB over Mcewen Road is a concrete continuous tee beam carrying State Route 4 EB over Mcewen Road in Contra Costa County, California. It was built in 1967, so it is 58 years old, older 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 23,000 vehicles a day, roughly 12% of them trucks, projected to reach 48,517 by 2042. The structure is 147 ft (44.8 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesState Route 4 EB
CrossesMcewen Road
Location04-CC-004-R5.17
RouteState Highway 4
CountyContra Costa County
StateCalifornia
Coordinates38.01494, -122.17794
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating32.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length147 ft (44.8 m)
Longest span65 ft (19.8 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,000 (2018)
Projected traffic48,517 by 2042
Trucks12%
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 Mcewen Road built?

It was built in 1967, making it 58 years old in 2025.

What condition is State Route 4 EB over Mcewen 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 May 2024.

How much traffic does State Route 4 EB over Mcewen Road carry?

About 23,000 vehicles per day (2018 count), of which roughly 12% are trucks.

How long is State Route 4 EB over Mcewen Road?

The structure is 147 ft (44.8 m) long with a longest span of 65 ft (19.8 m) and a deck 40 ft wide.

Who owns State Route 4 EB over Mcewen Road?

It is owned by the State Highway Agency.