US Bridges

No Data Entered over Middle Fork Smith River

Good

Del Norte County, California · S11 T17N R3E · Structure no. 051051000001037

Built
1954
71 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Steel
Length
104 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over Middle Fork Smith River is a steel box beam or girders - multiple carrying No Data Entered over Middle Fork Smith River in Del Norte County, California. It was built in 1954, so it is 71 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, projected to reach 75 by 2045. The structure is 104 ft (31.7 m) long and 16 ft wide.

CarriesNo Data Entered
CrossesMiddle Fork Smith River
LocationS11 T17N R3E
RouteFederal Lands Road 18N08
Coordinates41.88406, -123.80946
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating—
Inventory rating—

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span104 ft (31.7 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was No Data Entered over Middle Fork Smith River built?

It was built in 1954, making it 71 years old in 2025.

What condition is No Data Entered over Middle Fork Smith River 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 September 2023.

How much traffic does No Data Entered over Middle Fork Smith River carry?

About 50 vehicles per day (latest count).

How long is No Data Entered over Middle Fork Smith River?

The structure is 104 ft (31.7 m) long with a longest span of 104 ft (31.7 m) and a deck 16 ft wide.

Who owns No Data Entered over Middle Fork Smith River?

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