US Bridges

Castlewood Drive over Arroyo De LA Laguna

Fair

Alameda County, California · 0.1 MI E/O Foothill RD · Structure no. 33C0025

Built
1927
98 years old
Condition
Fair
inspected November 2023
Type
Girder and Floorbeam System
Steel
Length
213 ft
2 main spans
Daily traffic
5,200
2014 count
Owner
County
County Highway Agency

About this bridge

Castlewood Drive over Arroyo De LA Laguna is a steel girder and floorbeam system carrying Castlewood Drive over Arroyo De LA Laguna in Alameda County, California. It was built in 1927, so it is 98 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 5,200 vehicles a day, roughly 2% of them trucks, projected to reach 4,989 by 2041. The structure is 213 ft (64.9 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCastlewood Drive
CrossesArroyo De LA Laguna
Location0.1 MI E/O Foothill RD
RouteCounty Highway 0
CountyAlameda County
StateCalifornia
Coordinates37.63745, -121.89074
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating20.9 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadUnknown
Structure length213 ft (64.9 m)
Longest span83 ft (25.3 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,200 (2014)
Projected traffic4,989 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 Castlewood Drive over Arroyo De LA Laguna built?

It was built in 1927, making it 98 years old in 2025.

What condition is Castlewood Drive over Arroyo De LA Laguna 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 Castlewood Drive over Arroyo De LA Laguna carry?

About 5,200 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is Castlewood Drive over Arroyo De LA Laguna?

The structure is 213 ft (64.9 m) long with a longest span of 83 ft (25.3 m) and a deck 29 ft wide.

Who owns Castlewood Drive over Arroyo De LA Laguna?

It is owned by the County Highway Agency.