US Bridges

Washington Ave over San Lorenzo Creek

Fair

Alameda County, California · S Lewelling Blvd · Structure no. 33C0082

Built
1954
71 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
31,700
2006 count
Owner
City
City or Municipal Highway Agency

About this bridge

Washington Ave over San Lorenzo Creek is a steel stringer/multi-beam or girder carrying Washington Ave over San Lorenzo Creek in Alameda County, California. It was built in 1954, so it is 71 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 31,700 vehicles a day, roughly 2% of them trucks, projected to reach 33,150 by 2046. The structure is 73 ft (22.4 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWashington Ave
CrossesSan Lorenzo Creek
LocationS Lewelling Blvd
RouteCity Street 0
Coordinates37.68472, -122.13853
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.8 US tons
Inventory rating55.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length73 ft (22.4 m)
Longest span70 ft (21.4 m)
Deck width80 ft (24.4 m)
Roadway width64 ft (19.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,700 (2006)
Projected traffic33,150 by 2046
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Washington Ave over San Lorenzo Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Washington Ave 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 October 2024.

How much traffic does Washington Ave over San Lorenzo Creek carry?

About 31,700 vehicles per day (2006 count), of which roughly 2% are trucks.

How long is Washington Ave over San Lorenzo Creek?

The structure is 73 ft (22.4 m) long with a longest span of 70 ft (21.4 m) and a deck 80 ft wide.

Who owns Washington Ave over San Lorenzo Creek?

It is owned by the City or Municipal Highway Agency.