US Bridges

Forest Road 300 over North Fk of Sout Fk Noyo

Good

Mendocino County, California · Ne/O San Felipe RD · Structure no. 10F0055

Built
1958
67 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
35 ft
1 main span
Daily traffic
50
2009 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Forest Road 300 over North Fk of Sout Fk Noyo is a wood or timber stringer/multi-beam or girder carrying Forest Road 300 over North Fk of Sout Fk Noyo in Mendocino County, California. It was built in 1958, so it is 67 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 2% of them trucks, projected to reach 62 by 2041. The structure is 35 ft (10.8 m) long and 18 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesForest Road 300
CrossesNorth Fk of Sout Fk Noyo
LocationNe/O San Felipe RD
RouteState Lands Road 0
Coordinates39.39181, -123.68546
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating28.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length35 ft (10.8 m)
Longest span34 ft (10.5 m)
Deck width18 ft (5.6 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2009)
Projected traffic62 by 2041
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Forest Road 300 over North Fk of Sout Fk Noyo built?

It was built in 1958, making it 67 years old in 2025.

What condition is Forest Road 300 over North Fk of Sout Fk Noyo in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Forest Road 300 over North Fk of Sout Fk Noyo carry?

About 50 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is Forest Road 300 over North Fk of Sout Fk Noyo?

The structure is 35 ft (10.8 m) long with a longest span of 34 ft (10.5 m) and a deck 18 ft wide.

Who owns Forest Road 300 over North Fk of Sout Fk Noyo?

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