US Bridges

Castle Rock over Virginia Creek

Fair

Mono County, California · No Data Entered · Structure no. 041702000001085

Built
1999
26 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Other
Length
22 ft
1 main span
Daily traffic
40
1994 count
Owner
Federal
U.S. Forest Service

About this bridge

Castle Rock over Virginia Creek is a other stringer/multi-beam or girder carrying Castle Rock over Virginia Creek in Mono County, California. It was built in 1999, so it is 26 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 22 ft (6.7 m) long and 21 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesCastle Rock
CrossesVirginia Creek
LocationNo Data Entered
RouteFederal Lands Road 10139
CountyMono County
StateCalifornia
Coordinates38.07317, -119.21177
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating—

Structure

Structure typeStringer/Multi-beam or Girder
MaterialOther
DeckWood or timber
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width21 ft (6.5 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (1994)
Projected traffic60 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$55,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Castle Rock over Virginia Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Castle Rock over Virginia 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 September 2024.

How much traffic does Castle Rock over Virginia Creek carry?

About 40 vehicles per day (1994 count).

How long is Castle Rock over Virginia Creek?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 21 ft wide.

Who owns Castle Rock over Virginia Creek?

It is owned by the U.S. Forest Service.