US Bridges

W GRAND-N880 Onrmp over UP RR BNSF RY AMTRAK Por

Fair

Alameda County, California · 04-ALA-880-R34.50R-OAK · Structure no. 33 0611S

Built
1997
28 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
869 ft
6 main spans
Daily traffic
7,000
2000 count
Owner
State
State Highway Agency

About this bridge

W GRAND-N880 Onrmp over UP RR BNSF RY AMTRAK Por is a prestressed concrete continuous box beam or girders - multiple carrying W GRAND-N880 Onrmp over UP RR BNSF RY AMTRAK Por in Alameda County, California. It was built in 1997, so it is 28 years old, younger 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 6 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 7,000 vehicles a day, roughly 10% of them trucks, projected to reach 9,652 by 2043. The structure is 869 ft (264.8 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesW GRAND-N880 Onrmp
CrossesUP RR BNSF RY AMTRAK Por
Location04-ALA-880-R34.50R-OAK
RouteInterstate 880
CountyAlameda County
StateCalifornia
Coordinates37.81988, -122.29345
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length869 ft (264.8 m)
Longest span175 ft (53.3 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2000)
Projected traffic9,652 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 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 W GRAND-N880 Onrmp over UP RR BNSF RY AMTRAK Por built?

It was built in 1997, making it 28 years old in 2025.

What condition is W GRAND-N880 Onrmp over UP RR BNSF RY AMTRAK Por 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 March 2023.

How much traffic does W GRAND-N880 Onrmp over UP RR BNSF RY AMTRAK Por carry?

About 7,000 vehicles per day (2000 count), of which roughly 10% are trucks.

How long is W GRAND-N880 Onrmp over UP RR BNSF RY AMTRAK Por?

The structure is 869 ft (264.8 m) long with a longest span of 175 ft (53.3 m) and a deck 28 ft wide.

Who owns W GRAND-N880 Onrmp over UP RR BNSF RY AMTRAK Por?

It is owned by the State Highway Agency.