US Bridges

Interstate 580 WB over Midway Road

Good

Alameda County, California · 04-ALA-580-L1.04R · Structure no. 33 0345R

Built
1966
59 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
97 ft
3 main spans
Daily traffic
29,333
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 580 WB over Midway Road is a concrete continuous slab carrying Interstate 580 WB over Midway Road in Alameda County, California. It was built in 1966, so it is 59 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 29,333 vehicles a day, roughly 13% of them trucks, projected to reach 87,725 by 2042. The structure is 97 ft (29.6 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesInterstate 580 WB
CrossesMidway Road
Location04-ALA-580-L1.04R
RouteInterstate 580
Coordinates37.74236, -121.57235
Functional classRural 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 2024
Inspection intervalevery 24 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 rating80 US tons
Inventory rating48.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span40 ft (12.2 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,333 (2020)
Projected traffic87,725 by 2042
Trucks13%
Lanes on structure2
Traffic directionOne-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 580 WB over Midway Road built?

It was built in 1966, making it 59 years old in 2025.

What condition is Interstate 580 WB over Midway 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 2024.

How much traffic does Interstate 580 WB over Midway Road carry?

About 29,333 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is Interstate 580 WB over Midway Road?

The structure is 97 ft (29.6 m) long with a longest span of 40 ft (12.2 m) and a deck 41 ft wide.

Who owns Interstate 580 WB over Midway Road?

It is owned by the State Highway Agency.