US Bridges

No Data Entered over No Data Entered

Poor

Humboldt County, California · S21 T1N R6E · Structure no. 051053000001008

Built
1980
45 years old
Condition
Poor
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Concrete
Length
80 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over No Data Entered is a concrete box beam or girders - single or spread carrying No Data Entered over No Data Entered in Humboldt County, California. It was built in 1980, so it is 45 years old, younger 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.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 80 ft (24.4 m) long and 16 ft wide.

Location

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CarriesNo Data Entered
CrossesNo Data Entered
LocationS21 T1N R6E
RouteFederal Lands Road 6N01
CountyHumboldt County
StateCalifornia
Coordinates40.45105, -123.50272
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36.8 US tons
Inventory rating28.2 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span80 ft (24.4 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 No Data Entered built?

It was built in 1980, making it 45 years old in 2025.

What condition is No Data Entered over No Data Entered 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 October 2024.

How much traffic does No Data Entered over No Data Entered carry?

About 50 vehicles per day (latest count).

How long is No Data Entered over No Data Entered?

The structure is 80 ft (24.4 m) long with a longest span of 80 ft (24.4 m) and a deck 16 ft wide.

Who owns No Data Entered over No Data Entered?

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