US Bridges

Lkout Pss Ski Area over Int Lkout Pass-I 90 004

Good

Mineral County, Montana · 9M W Saltese · Structure no. L31174000+02001

Built
1973
52 years old
Condition
Good
inspected June 2023
Type
Frame
Steel Continuous
Length
242 ft
3 main spans
Daily traffic
100
2025 count
Owner
State
State Highway Agency

About this bridge

Lkout Pss Ski Area over Int Lkout Pass-I 90 004 is a steel continuous frame carrying Lkout Pss Ski Area over Int Lkout Pass-I 90 004 in Mineral County, Montana. It was built in 1973, so it is 52 years old, older 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 242 ft (73.7 m) long and 40 ft wide.

CarriesLkout Pss Ski Area
CrossesInt Lkout Pass-I 90 004
Location9M W Saltese
RouteCounty Highway 31174
StateMontana
Coordinates47.45346, -115.6943
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.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.1 US tons
Inventory rating49.1 US tons

Structure

Structure typeFrame
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length242 ft (73.7 m)
Longest span124 ft (37.8 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lkout Pss Ski Area over Int Lkout Pass-I 90 004 built?

It was built in 1973, making it 52 years old in 2025.

What condition is Lkout Pss Ski Area over Int Lkout Pass-I 90 004 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 June 2023.

How much traffic does Lkout Pss Ski Area over Int Lkout Pass-I 90 004 carry?

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

How long is Lkout Pss Ski Area over Int Lkout Pass-I 90 004?

The structure is 242 ft (73.7 m) long with a longest span of 124 ft (37.8 m) and a deck 40 ft wide.

Who owns Lkout Pss Ski Area over Int Lkout Pass-I 90 004?

It is owned by the State Highway Agency.