US Bridges

Cirby Way over Interstate 80

Good

Placer County, California · 03-PLA-080-0.69-RSV · Structure no. 19 0134

Built
1973
52 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
296 ft
2 main spans
Daily traffic
29,000
2011 count
Owner
State
State Highway Agency

About this bridge

Cirby Way over Interstate 80 is a prestressed concrete continuous box beam or girders - multiple carrying Cirby Way over Interstate 80 in Placer County, California. It was built in 1973, so it is 52 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 29,000 vehicles a day, roughly 1% of them trucks, projected to reach 34,231 by 2045. The structure is 296 ft (90.2 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCirby Way
CrossesInterstate 80
Location03-PLA-080-0.69-RSV
RouteCity Street 0
Coordinates38.72934, -121.28587
Functional classUrban Other Principal Arterial

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length296 ft (90.2 m)
Longest span147 ft (44.8 m)
Deck width71 ft (21.6 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,000 (2011)
Projected traffic34,231 by 2045
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Cirby Way over Interstate 80 built?

It was built in 1973, making it 52 years old in 2025.

What condition is Cirby Way over Interstate 80 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 October 2023.

How much traffic does Cirby Way over Interstate 80 carry?

About 29,000 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Cirby Way over Interstate 80?

The structure is 296 ft (90.2 m) long with a longest span of 147 ft (44.8 m) and a deck 71 ft wide.

Who owns Cirby Way over Interstate 80?

It is owned by the State Highway Agency.