US Bridges

Interstate 680 over Rudgear Road

Good

Contra Costa County, California · 04-CC-680-R12.61-WLC · Structure no. 28 0059

Built
1964
61 years old, rebuilt 1994
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
570 ft
6 main spans
Daily traffic
197,400
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 680 over Rudgear Road is a concrete continuous box beam or girders - multiple carrying Interstate 680 over Rudgear Road in Contra Costa County, California. It was built in 1964 and reconstructed in 1994, so it is 61 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 197,400 vehicles a day, roughly 6% of them trucks, projected to reach 256,600 by 2041. The structure is 570 ft (173.7 m) long and 151 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesInterstate 680
CrossesRudgear Road
Location04-CC-680-R12.61-WLC
RouteInterstate 680
Coordinates37.87912, -122.04879
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length570 ft (173.7 m)
Longest span125 ft (38.2 m)
Deck width151 ft (45.9 m)
Roadway width146 ft (44.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic197,400 (2020)
Projected traffic256,600 by 2041
Trucks6%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 680 over Rudgear Road built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1994.

What condition is Interstate 680 over Rudgear 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 July 2024.

How much traffic does Interstate 680 over Rudgear Road carry?

About 197,400 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Interstate 680 over Rudgear Road?

The structure is 570 ft (173.7 m) long with a longest span of 125 ft (38.2 m) and a deck 151 ft wide.

Who owns Interstate 680 over Rudgear Road?

It is owned by the State Highway Agency.