US Bridges

Rg State Park Road over Russian Gulch

FairPosted for load

Mendocino County, California · Russian Gulch State Park · Structure no. 10P0006

Built
1960
65 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
26 ft
1 main span
Daily traffic
45
2018 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Rg State Park Road over Russian Gulch is a wood or timber stringer/multi-beam or girder carrying Rg State Park Road over Russian Gulch in Mendocino County, California. It was built in 1960, so it is 65 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. Its operating status is: posted for load restriction.

It carries about 45 vehicles a day, projected to reach 68 by 2044. The structure is 26 ft (7.9 m) long and 13 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRg State Park Road
CrossesRussian Gulch
LocationRussian Gulch State Park
RouteState Lands Road 0
CountyMendocino County
StateCalifornia
Coordinates39.33062, -123.80104
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating20.4 US tons
Inventory rating14.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width13 ft (4.1 m)
Roadway width11 ft (3.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2018)
Projected traffic68 by 2044
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Rg State Park Road over Russian Gulch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Rg State Park Road over Russian Gulch 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 May 2024.

How much traffic does Rg State Park Road over Russian Gulch carry?

About 45 vehicles per day (2018 count).

How long is Rg State Park Road over Russian Gulch?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 13 ft wide.

Who owns Rg State Park Road over Russian Gulch?

It is owned by the State Park, Forest, or Reservation Agency.