US Bridges

US 89 FH 32 over North Fork Smith River

Fair

Meagher County, Montana · 2M NE White Sulphur Spr · Structure no. P00060000+04351

Built
1955
70 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
38 ft
2 main spans
Daily traffic
607
2023 count
Owner
State
State Highway Agency

About this bridge

US 89 FH 32 over North Fork Smith River is a wood or timber stringer/multi-beam or girder carrying US 89 FH 32 over North Fork Smith River in Meagher 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 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 607 vehicles a day, roughly 7% of them trucks, projected to reach 637 by 2043. The structure is 38 ft (11.6 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 89 FH 32
CrossesNorth Fork Smith River
Location2M NE White Sulphur Spr
RouteU.S. Route 89
StateMontana
Coordinates46.57096, -110.85303
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating31 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 15
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic607 (2023)
Projected traffic637 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway 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 US 89 FH 32 over North Fork Smith River built?

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

What condition is US 89 FH 32 over North Fork Smith River 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 US 89 FH 32 over North Fork Smith River carry?

About 607 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US 89 FH 32 over North Fork Smith River?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns US 89 FH 32 over North Fork Smith River?

It is owned by the State Highway Agency.