US Bridges

US 89 FH 32 over Dry Fork Belt Creek

Good

Cascade County, Montana · Monarch · Structure no. P00060049+09501

Built
2014
11 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
451
2023 count
Owner
State
State Highway Agency

About this bridge

US 89 FH 32 over Dry Fork Belt Creek is a concrete culvert carrying US 89 FH 32 over Dry Fork Belt Creek in Cascade County, Montana. It was built in 2014, so it is 11 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 451 vehicles a day, roughly 10% of them trucks, projected to reach 474 by 2043. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 89 FH 32
CrossesDry Fork Belt Creek
LocationMonarch
RouteU.S. Route 89
StateMontana
Coordinates47.09598, -110.83582
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53 US tons
Inventory rating41 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length32 ft (9.8 m)
Longest span15 ft (4.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic451 (2023)
Projected traffic474 by 2043
Trucks10%
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 Dry Fork Belt Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is US 89 FH 32 over Dry Fork Belt Creek 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 October 2024.

How much traffic does US 89 FH 32 over Dry Fork Belt Creek carry?

About 451 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is US 89 FH 32 over Dry Fork Belt Creek?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.5 m).

Who owns US 89 FH 32 over Dry Fork Belt Creek?

It is owned by the State Highway Agency.