US Bridges

Union City Blvd over Alameda Creek

Fair

Alameda County, California · 0.3 MI N/O Whipple RD · Structure no. 33C0106

Built
1958
67 years old, rebuilt 1989
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
154 ft
6 main spans
Daily traffic
23,000
2009 count
Owner
City
City or Municipal Highway Agency

About this bridge

Union City Blvd over Alameda Creek is a concrete continuous culvert carrying Union City Blvd over Alameda Creek in Alameda County, California. It was built in 1958 and reconstructed in 1989, so it is 67 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 23,000 vehicles a day, roughly 10% of them trucks, projected to reach 33,818 by 2046. The structure is 154 ft (46.9 m) long and 104 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUnion City Blvd
CrossesAlameda Creek
Location0.3 MI N/O Whipple RD
RouteCity Street 0
Coordinates37.60978, -122.08359
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length154 ft (46.9 m)
Longest span30 ft (9.1 m)
Deck width104 ft (31.7 m)
Roadway width72 ft (22 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,000 (2009)
Projected traffic33,818 by 2046
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 Union City Blvd over Alameda Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1989.

What condition is Union City Blvd over Alameda 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 September 2024.

How much traffic does Union City Blvd over Alameda Creek carry?

About 23,000 vehicles per day (2009 count), of which roughly 10% are trucks.

How long is Union City Blvd over Alameda Creek?

The structure is 154 ft (46.9 m) long with a longest span of 30 ft (9.1 m) and a deck 104 ft wide.

Who owns Union City Blvd over Alameda Creek?

It is owned by the City or Municipal Highway Agency.