US Bridges

Rosewood Drive over Tassajara Creek

Fair

Alameda County, California · West of Old Santa Rita RD · Structure no. 33C0437

Built
1985
40 years old
Condition
Fair
inspected October 2021
Type
Culvert
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
5,238
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Rosewood Drive over Tassajara Creek is a concrete continuous culvert carrying Rosewood Drive over Tassajara Creek in Alameda County, California. It was built in 1985, so it is 40 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 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 5,238 vehicles a day, roughly 2% of them trucks, projected to reach 5,762 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRosewood Drive
CrossesTassajara Creek
LocationWest of Old Santa Rita RD
RouteCity Street 0
CountyAlameda County
StateCalifornia
Coordinates37.70083, -121.87926
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 protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length36 ft (11 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,238 (2023)
Projected traffic5,762 by 2043
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rosewood Drive over Tassajara Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Rosewood Drive over Tassajara 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 2021.

How much traffic does Rosewood Drive over Tassajara Creek carry?

About 5,238 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Rosewood Drive over Tassajara Creek?

The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m).

Who owns Rosewood Drive over Tassajara Creek?

It is owned by the City or Municipal Highway Agency.