US Bridges

No Data Entered over Henderson Creek

Poor

Mineral County, Montana · No Data Entered · Structure no. 011607000003054

Built
1955
70 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
43 ft
3 main spans
Daily traffic
40
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over Henderson Creek is a wood or timber stringer/multi-beam or girder carrying No Data Entered over Henderson Creek in Mineral County, Montana. It was built in 1955, so it is 70 years old, older than the Montana average of 47 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 43 ft (13.1 m) long and 14 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesNo Data Entered
CrossesHenderson Creek
LocationNo Data Entered
RouteFederal Lands Road 300-1
CountyMineral County
StateMontana
Coordinates47.35339, -115.29485
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadRailroad
Structure length43 ft (13.1 m)
Longest span14 ft (4.2 m)
Deck width14 ft (4.4 m)
Roadway width13 ft (3.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (—)
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was No Data Entered over Henderson Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is No Data Entered over Henderson Creek 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 September 2024.

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

About 40 vehicles per day (latest count).

How long is No Data Entered over Henderson Creek?

The structure is 43 ft (13.1 m) long with a longest span of 14 ft (4.2 m) and a deck 14 ft wide.

Who owns No Data Entered over Henderson Creek?

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