US Bridges

Bluebell Road over Altamont Creek Tributary

Fair

Alameda County, California · 1.1 MI North of I-580 · Structure no. 33C0191

Built
1970
55 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
60 ft
5 main spans
Daily traffic
2,300
2009 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bluebell Road over Altamont Creek Tributary is a concrete continuous culvert carrying Bluebell Road over Altamont Creek Tributary in Alameda County, California. It was built in 1970, so it is 55 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 6 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 2,300 vehicles a day, roughly 1% of them trucks, projected to reach 1,199 by 2041. The structure is 60 ft (18.3 m) long and 65 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesBluebell Road
CrossesAltamont Creek Tributary
Location1.1 MI North of I-580
RouteCity Street 0
CountyAlameda County
StateCalifornia
Coordinates37.71598, -121.74074
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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
DeckNot applicable
Main spans5
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span12 ft (3.7 m)
Deck width65 ft (19.9 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2009)
Projected traffic1,199 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 Bluebell Road over Altamont Creek Tributary built?

It was built in 1970, making it 55 years old in 2025.

What condition is Bluebell Road over Altamont Creek Tributary 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 November 2023.

How much traffic does Bluebell Road over Altamont Creek Tributary carry?

About 2,300 vehicles per day (2009 count), of which roughly 1% are trucks.

How long is Bluebell Road over Altamont Creek Tributary?

The structure is 60 ft (18.3 m) long with a longest span of 12 ft (3.7 m) and a deck 65 ft wide.

Who owns Bluebell Road over Altamont Creek Tributary?

It is owned by the City or Municipal Highway Agency.