US Bridges

Hercules Ave over BNSF RY

Fair

Contra Costa County, California · At San Pablo Ave · Structure no. 28C0445

Built
1985
40 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
119 ft
1 main span
Daily traffic
4,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hercules Ave over BNSF RY is a prestressed concrete stringer/multi-beam or girder carrying Hercules Ave over BNSF RY in Contra Costa County, California. It was built in 1985, so it is 40 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 4,000 vehicles a day, roughly 2% of them trucks, projected to reach 5,453 by 2042. The structure is 119 ft (36.3 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHercules Ave
CrossesBNSF RY
LocationAt San Pablo Ave
RouteCity Street 0
Coordinates38.00966, -122.28234
Functional classUrban Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length119 ft (36.3 m)
Longest span115 ft (35.1 m)
Deck width82 ft (25 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2020)
Projected traffic5,453 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Hercules Ave over BNSF RY built?

It was built in 1985, making it 40 years old in 2025.

What condition is Hercules Ave over BNSF RY 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 December 2024.

How much traffic does Hercules Ave over BNSF RY carry?

About 4,000 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Hercules Ave over BNSF RY?

The structure is 119 ft (36.3 m) long with a longest span of 115 ft (35.1 m) and a deck 82 ft wide.

Who owns Hercules Ave over BNSF RY?

It is owned by the City or Municipal Highway Agency.