US Bridges

SR 160 over San Joaquin Rivr Antioch

Good

Contra Costa County, California · 04-CC-160-0.82 · Structure no. 28 0009

Built
1978
47 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
9,437 ft
40 main spans
Daily traffic
18,900
2021 count
Owner
State
State Highway Agency

About this bridge

SR 160 over San Joaquin Rivr Antioch is a steel continuous stringer/multi-beam or girder carrying SR 160 over San Joaquin Rivr Antioch in Contra Costa County, California. It was built in 1978, so it is 47 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,900 vehicles a day, roughly 11% of them trucks, projected to reach 30,400 by 2045. The structure is 9,437 ft (2,876.4 m) long and 44 ft wide. If it were closed, the detour would be 80.8 mi (130 km).

Location

Open in Google Maps
CarriesSR 160
CrossesSan Joaquin Rivr Antioch
Location04-CC-160-0.82
RouteState Highway 160
CountyContra Costa County
StateCalifornia
Coordinates38.0168, -121.75148
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans40 (+30 approach)
Design loadHS 20 + Mod
Structure length9,437 ft (2,876.4 m)
Longest span460 ft (140.2 m)
Deck width44 ft (13.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,900 (2021)
Projected traffic30,400 by 2045
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed80.8 mi (130 km)
TollToll bridge
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR 160 over San Joaquin Rivr Antioch built?

It was built in 1978, making it 47 years old in 2025.

What condition is SR 160 over San Joaquin Rivr Antioch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does SR 160 over San Joaquin Rivr Antioch carry?

About 18,900 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is SR 160 over San Joaquin Rivr Antioch?

The structure is 9,437 ft (2,876.4 m) long with a longest span of 460 ft (140.2 m) and a deck 44 ft wide.

Who owns SR 160 over San Joaquin Rivr Antioch?

It is owned by the State Highway Agency.