US Bridges

Interstate 680 over Arthur Road

Good

Contra Costa County, California · 04-CC-680-22.70 · Structure no. 28 0170

Built
1962
63 years old, rebuilt 1991
Condition
Good
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
235 ft
4 main spans
Daily traffic
105,000
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 680 over Arthur Road is a concrete continuous tee beam carrying Interstate 680 over Arthur Road in Contra Costa County, California. It was built in 1962 and reconstructed in 1991, so it is 63 years old, older 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 105,000 vehicles a day, projected to reach 166,522 by 2047. The structure is 235 ft (71.6 m) long and 120 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesInterstate 680
CrossesArthur Road
Location04-CC-680-22.70
RouteInterstate 680
Coordinates38.01086, -122.08811
Functional classUrban Principal Arterial - Interstate

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.
Last inspectionJanuary 2025
Inspection intervalevery 48 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 alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length235 ft (71.6 m)
Longest span93 ft (28.3 m)
Deck width120 ft (36.6 m)
Roadway width114 ft (34.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105,000 (2009)
Projected traffic166,522 by 2047
Trucks0%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Interstate 680 over Arthur Road built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1991.

What condition is Interstate 680 over Arthur Road 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 January 2025.

How much traffic does Interstate 680 over Arthur Road carry?

About 105,000 vehicles per day (2009 count).

How long is Interstate 680 over Arthur Road?

The structure is 235 ft (71.6 m) long with a longest span of 93 ft (28.3 m) and a deck 120 ft wide.

Who owns Interstate 680 over Arthur Road?

It is owned by the State Highway Agency.