US Bridges

Hopyard Road SB over Arroyo Mocho

Fair

Alameda County, California · 1.5 MI S/O SR 580 · Structure no. 33C0101L

Built
1967
58 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
153 ft
2 main spans
Daily traffic
16,500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hopyard Road SB over Arroyo Mocho is a steel stringer/multi-beam or girder carrying Hopyard Road SB over Arroyo Mocho in Alameda County, California. It was built in 1967, so it is 58 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 16,500 vehicles a day, roughly 2% of them trucks, projected to reach 18,150 by 2041. The structure is 153 ft (46.5 m) long and 61 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesHopyard Road SB
CrossesArroyo Mocho
Location1.5 MI S/O SR 580
RouteCity Street 0
CountyAlameda County
StateCalifornia
Coordinates37.68012, -121.90347
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83.9 US tons
Inventory rating50.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length153 ft (46.5 m)
Longest span75 ft (22.9 m)
Deck width61 ft (18.6 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2023)
Projected traffic18,150 by 2041
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Hopyard Road SB over Arroyo Mocho built?

It was built in 1967, making it 58 years old in 2025.

What condition is Hopyard Road SB over Arroyo Mocho 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 October 2023.

How much traffic does Hopyard Road SB over Arroyo Mocho carry?

About 16,500 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Hopyard Road SB over Arroyo Mocho?

The structure is 153 ft (46.5 m) long with a longest span of 75 ft (22.9 m) and a deck 61 ft wide.

Who owns Hopyard Road SB over Arroyo Mocho?

It is owned by the City or Municipal Highway Agency.