US Bridges

NFSR #1137 over Johnson Cr.

Fair

Beaverhead County, Montana · Bender Cr. · Structure no. 010203000003041

Built
2002
23 years old
Condition
Fair
inspected August 2023
Type
Slab
Wood or Timber
Length
27 ft
1 main span
Daily traffic
15
Owner
Federal
U.S. Forest Service

About this bridge

NFSR #1137 over Johnson Cr. is a wood or timber slab carrying NFSR #1137 over Johnson Cr. in Beaverhead County, Montana. It was built in 2002, so it is 23 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 15 vehicles a day, projected to reach 22 by 2045. The structure is 27 ft (8.1 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesNFSR #1137
CrossesJohnson Cr.
LocationBender Cr.
RouteFederal Lands Road 1137
CountyBeaverhead County
StateMontana
Coordinates45.77055, -113.73093
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length27 ft (8.1 m)
Longest span25 ft (7.6 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (—)
Projected traffic22 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 NFSR #1137 over Johnson Cr. built?

It was built in 2002, making it 23 years old in 2025.

What condition is NFSR #1137 over Johnson Cr. 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 August 2023.

How much traffic does NFSR #1137 over Johnson Cr. carry?

About 15 vehicles per day (latest count).

How long is NFSR #1137 over Johnson Cr.?

The structure is 27 ft (8.1 m) long with a longest span of 25 ft (7.6 m) and a deck 16 ft wide.

Who owns NFSR #1137 over Johnson Cr.?

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