US Bridges

Calaveritas RD over Calaveritas Creek

PoorPosted for load

Calaveras County, California · 4.6 MI Se/O Mt Ranch RD · Structure no. 30C0024

Built
1928
97 years old
Condition
Poor
inspected February 2025
Type
Truss - Thru
Steel
Length
100 ft
1 main span
Daily traffic
203
2011 count
Owner
County
County Highway Agency

About this bridge

Calaveritas RD over Calaveritas Creek is a steel truss - thru carrying Calaveritas RD over Calaveritas Creek in Calaveras County, California. It was built in 1928, so it is 97 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 203 vehicles a day, roughly 2% of them trucks, projected to reach 211 by 2047. The structure is 100 ft (30.5 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCalaveritas RD
CrossesCalaveritas Creek
Location4.6 MI Se/O Mt Ranch RD
RouteCounty Highway 0
Coordinates38.15622, -120.60986
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.2 US tons
Inventory rating11 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length100 ft (30.5 m)
Longest span100 ft (30.5 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic203 (2011)
Projected traffic211 by 2047
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$660,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Calaveritas RD over Calaveritas Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is Calaveritas RD over Calaveritas Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Calaveritas RD over Calaveritas Creek carry?

About 203 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Calaveritas RD over Calaveritas Creek?

The structure is 100 ft (30.5 m) long with a longest span of 100 ft (30.5 m) and a deck 18 ft wide.

Who owns Calaveritas RD over Calaveritas Creek?

It is owned by the County Highway Agency.