US Bridges

Alpine Oc over Interstate 80

Fair

Placer County, California · 03-PLA-080-38.35 · Structure no. 19 0070

Built
1959
66 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
192 ft
2 main spans
Daily traffic
548
2006 count
Owner
State
State Highway Agency

About this bridge

Alpine Oc over Interstate 80 is a prestressed concrete stringer/multi-beam or girder carrying Alpine Oc over Interstate 80 in Placer County, California. It was built in 1959, so it is 66 years old, older 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 548 vehicles a day, roughly 5% of them trucks, projected to reach 1,041 by 2041. The structure is 192 ft (58.5 m) long and 37 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesAlpine Oc
CrossesInterstate 80
Location03-PLA-080-38.35
RouteCounty Highway 0
Coordinates39.15012, -120.89852
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating20.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span59 ft (18 m)
Deck width37 ft (11.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic548 (2006)
Projected traffic1,041 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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 Alpine Oc over Interstate 80 built?

It was built in 1959, making it 66 years old in 2025.

What condition is Alpine Oc over Interstate 80 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 June 2023.

How much traffic does Alpine Oc over Interstate 80 carry?

About 548 vehicles per day (2006 count), of which roughly 5% are trucks.

How long is Alpine Oc over Interstate 80?

The structure is 192 ft (58.5 m) long with a longest span of 59 ft (18 m) and a deck 37 ft wide.

Who owns Alpine Oc over Interstate 80?

It is owned by the State Highway Agency.