US Bridges

W4-W80 Connector over State Route 4

Fair

Contra Costa County, California · 04-CC-004-0.20-HER · Structure no. 28 0188F

Built
1958
67 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
365 ft
5 main spans
Daily traffic
12,500
2018 count
Owner
State
State Highway Agency

About this bridge

W4-W80 Connector over State Route 4 is a concrete continuous box beam or girders - multiple carrying W4-W80 Connector over State Route 4 in Contra Costa County, California. It was built in 1958, so it is 67 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 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 12,500 vehicles a day, roughly 9% of them trucks, projected to reach 21,376 by 2042. The structure is 365 ft (111.3 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW4-W80 Connector
CrossesState Route 4
Location04-CC-004-0.20-HER
RouteState Highway 4
CountyContra Costa County
StateCalifornia
Coordinates38.01486, -122.26972
Functional classUrban Other Principal 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.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.8 US tons
Inventory rating52.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length365 ft (111.3 m)
Longest span80 ft (24.4 m)
Deck width27 ft (8.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck15 ft (4.7 m)

Traffic and service

Average daily traffic12,500 (2018)
Projected traffic21,376 by 2042
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 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 W4-W80 Connector over State Route 4 built?

It was built in 1958, making it 67 years old in 2025.

What condition is W4-W80 Connector over State Route 4 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 W4-W80 Connector over State Route 4 carry?

About 12,500 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is W4-W80 Connector over State Route 4?

The structure is 365 ft (111.3 m) long with a longest span of 80 ft (24.4 m) and a deck 27 ft wide.

Who owns W4-W80 Connector over State Route 4?

It is owned by the State Highway Agency.