US Bridges

S 200 over Wildlife Crossing

Good

Sanders County, Montana · 6 Miles East of Thompson · Structure no. 000000000007021

Built
2019
6 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
2,177
2023 count
Owner
State
State Highway Agency

About this bridge

S 200 over Wildlife Crossing is a prestressed concrete slab carrying S 200 over Wildlife Crossing in Sanders County, Montana. It was built in 2019, so it is 6 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 2,177 vehicles a day, roughly 7% of them trucks, projected to reach 2,286 by 2043. The structure is 50 ft (15.1 m) long and 44 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesS 200
CrossesWildlife Crossing
Location6 Miles East of Thompson
RouteState Highway 6
StateMontana
Coordinates47.58343, -115.20951
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating106 US tons
Inventory rating81 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length50 ft (15.1 m)
Longest span46 ft (13.9 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,177 (2023)
Projected traffic2,286 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S 200 over Wildlife Crossing built?

It was built in 2019, making it 6 years old in 2025.

What condition is S 200 over Wildlife Crossing 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 S 200 over Wildlife Crossing carry?

About 2,177 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is S 200 over Wildlife Crossing?

The structure is 50 ft (15.1 m) long with a longest span of 46 ft (13.9 m) and a deck 44 ft wide.

Who owns S 200 over Wildlife Crossing?

It is owned by the State Highway Agency.