US Bridges

Fish Hatchery RD over Skalkaho Creek 042

Good

Ravalli County, Montana · 2M SE Grantsdale · Structure no. L41321002+05001

Built
2009
16 years old
Condition
Good
inspected October 2024
Type
Channel Beam
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Fish Hatchery RD over Skalkaho Creek 042 is a prestressed concrete channel beam carrying Fish Hatchery RD over Skalkaho Creek 042 in Ravalli County, Montana. It was built in 2009, so it is 16 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 64 ft (19.4 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFish Hatchery RD
CrossesSkalkaho Creek 042
Location2M SE Grantsdale
RouteCounty Highway 41321
StateMontana
Coordinates46.19708, -114.11311
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53 US tons
Inventory rating36 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length64 ft (19.4 m)
Longest span64 ft (19.4 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$150,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fish Hatchery RD over Skalkaho Creek 042 built?

It was built in 2009, making it 16 years old in 2025.

What condition is Fish Hatchery RD over Skalkaho Creek 042 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 Fish Hatchery RD over Skalkaho Creek 042 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Fish Hatchery RD over Skalkaho Creek 042?

The structure is 64 ft (19.4 m) long with a longest span of 64 ft (19.4 m) and a deck 34 ft wide.

Who owns Fish Hatchery RD over Skalkaho Creek 042?

It is owned by the County Highway Agency.