US Bridges

W4-W80 Connector over BNSF Willow Sycamore

Fair

Contra Costa County, California · 04-CC-004-0.01-HER · Structure no. 28 0143F

Built
1983
42 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
587 ft
4 main spans
Daily traffic
20,700
2018 count
Owner
State
State Highway Agency

About this bridge

W4-W80 Connector over BNSF Willow Sycamore is a prestressed concrete continuous box beam or girders - multiple carrying W4-W80 Connector over BNSF Willow Sycamore in Contra Costa County, California. It was built in 1983, so it is 42 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 20,700 vehicles a day, roughly 9% of them trucks, projected to reach 42,752 by 2042. The structure is 587 ft (178.8 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesW4-W80 Connector
CrossesBNSF Willow Sycamore
Location04-CC-004-0.01-HER
RouteState Highway 4
CountyContra Costa County
StateCalifornia
Coordinates38.01139, -122.27331
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 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 spans4
Design loadHS 20 + Mod
Structure length587 ft (178.8 m)
Longest span175 ft (53.3 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,700 (2018)
Projected traffic42,752 by 2042
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.9 mi (3 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 BNSF Willow Sycamore built?

It was built in 1983, making it 42 years old in 2025.

What condition is W4-W80 Connector over BNSF Willow Sycamore 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 BNSF Willow Sycamore carry?

About 20,700 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is W4-W80 Connector over BNSF Willow Sycamore?

The structure is 587 ft (178.8 m) long with a longest span of 175 ft (53.3 m) and a deck 42 ft wide.

Who owns W4-W80 Connector over BNSF Willow Sycamore?

It is owned by the State Highway Agency.