US Bridges

State Route 4 WB over BART Tracks Access Road

Fair

Contra Costa County, California · 04-CC-004-R29.69-ANT · Structure no. 28 0408L

Built
2016
9 years old
Condition
Fair
inspected June 2023
Type
Frame
Concrete
Length
60 ft
1 main span
Daily traffic
47,000
2017 count
Owner
Railroad
Railroad

About this bridge

State Route 4 WB over BART Tracks Access Road is a concrete frame carrying State Route 4 WB over BART Tracks Access Road in Contra Costa County, California. It was built in 2016, so it is 9 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 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 47,000 vehicles a day, roughly 8% of them trucks, projected to reach 61,210 by 2045. The structure is 60 ft (18.3 m) long and 69 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesState Route 4 WB
CrossesBART Tracks Access Road
Location04-CC-004-R29.69-ANT
RouteState Highway 4
CountyContra Costa County
StateCalifornia
Coordinates37.99428, -121.77186
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width69 ft (21 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,000 (2017)
Projected traffic61,210 by 2045
Trucks8%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerRailroad
Maintained byRailroad
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 WB over BART Tracks Access Road built?

It was built in 2016, making it 9 years old in 2025.

What condition is State Route 4 WB over BART Tracks Access 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 June 2023.

How much traffic does State Route 4 WB over BART Tracks Access Road carry?

About 47,000 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is State Route 4 WB over BART Tracks Access Road?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 69 ft wide.

Who owns State Route 4 WB over BART Tracks Access Road?

It is owned by the Railroad.