US Bridges

Nye Rd-S 419 over Fishtail Creek

Good

Stillwater County, Montana · 3M SW Fishtail · Structure no. S00419006+08001

Built
1994
31 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
1,061
2023 count
Owner
State
State Highway Agency

About this bridge

Nye Rd-S 419 over Fishtail Creek is a prestressed concrete box beam or girders - multiple carrying Nye Rd-S 419 over Fishtail Creek in Stillwater County, Montana. It was built in 1994, so it is 31 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 1,061 vehicles a day, roughly 4% of them trucks, projected to reach 1,114 by 2043. The structure is 50 ft (15.2 m) long and 42 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

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CarriesNye Rd-S 419
CrossesFishtail Creek
Location3M SW Fishtail
RouteState Highway 419
CountyStillwater County
StateMontana
Coordinates45.43898, -109.54977
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span43 ft (13.1 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,061 (2023)
Projected traffic1,114 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 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 Nye Rd-S 419 over Fishtail Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Nye Rd-S 419 over Fishtail 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 August 2023.

How much traffic does Nye Rd-S 419 over Fishtail Creek carry?

About 1,061 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nye Rd-S 419 over Fishtail Creek?

The structure is 50 ft (15.2 m) long with a longest span of 43 ft (13.1 m) and a deck 42 ft wide.

Who owns Nye Rd-S 419 over Fishtail Creek?

It is owned by the State Highway Agency.