US Bridges

Calaveras RD over Alameda Creek

Fair

Alameda County, California · 5.2 MI Nw/O County Line · Structure no. 33C0073

Built
1964
61 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
215 ft
3 main spans
Daily traffic
1,200
2014 count
Owner
County
County Highway Agency

About this bridge

Calaveras RD over Alameda Creek is a steel stringer/multi-beam or girder carrying Calaveras RD over Alameda Creek in Alameda County, California. It was built in 1964, so it is 61 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 1,200 vehicles a day, roughly 10% of them trucks, projected to reach 817 by 2041. The structure is 215 ft (65.5 m) long and 32 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesCalaveras RD
CrossesAlameda Creek
Location5.2 MI Nw/O County Line
RouteCounty Highway 0
CountyAlameda County
StateCalifornia
Coordinates37.53481, -121.85353
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating92.8 US tons
Inventory rating55.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length215 ft (65.5 m)
Longest span70 ft (21.3 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2014)
Projected traffic817 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 Calaveras RD over Alameda Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Calaveras RD 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 November 2023.

How much traffic does Calaveras RD over Alameda Creek carry?

About 1,200 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Calaveras RD over Alameda Creek?

The structure is 215 ft (65.5 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.

Who owns Calaveras RD over Alameda Creek?

It is owned by the County Highway Agency.