US Bridges

Hesperian Blvd over San Lorenzo Creek

Fair

Alameda County, California · 0.01 MI S of I-880 · Structure no. 33C0203

Built
1974
51 years old
Condition
Fair
inspected June 2024
Type
Slab
Prestressed Concrete
Length
93 ft
1 main span
Daily traffic
38,200
2014 count
Owner
County
County Highway Agency

About this bridge

Hesperian Blvd over San Lorenzo Creek is a prestressed concrete slab carrying Hesperian Blvd over San Lorenzo Creek in Alameda County, California. It was built in 1974, so it is 51 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 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 38,200 vehicles a day, roughly 2% of them trucks, projected to reach 53,798 by 2042. The structure is 93 ft (28.3 m) long and 122 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesHesperian Blvd
CrossesSan Lorenzo Creek
Location0.01 MI S of I-880
RouteCounty Highway 0
CountyAlameda County
StateCalifornia
Coordinates37.68435, -122.12964
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 protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length93 ft (28.3 m)
Longest span50 ft (15.2 m)
Deck width122 ft (37.3 m)
Roadway width107 ft (32.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,200 (2014)
Projected traffic53,798 by 2042
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Hesperian Blvd over San Lorenzo Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Hesperian Blvd over San Lorenzo Creek 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 2024.

How much traffic does Hesperian Blvd over San Lorenzo Creek carry?

About 38,200 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is Hesperian Blvd over San Lorenzo Creek?

The structure is 93 ft (28.3 m) long with a longest span of 50 ft (15.2 m) and a deck 122 ft wide.

Who owns Hesperian Blvd over San Lorenzo Creek?

It is owned by the County Highway Agency.