US Bridges

Road 160 North over Milk River 037

FairPosted for load

Hill County, Montana · 30M NW Havre · Structure no. L21006005+09001

Built
1938
87 years old
Condition
Fair
inspected December 2024
Type
Truss - Thru
Steel
Length
286 ft
2 main spans
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Road 160 North over Milk River 037 is a steel truss - thru carrying Road 160 North over Milk River 037 in Hill County, Montana. It was built in 1938, so it is 87 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 286 ft (87.1 m) long and 18 ft wide. If it were closed, the detour would be 70.2 mi (113 km).

Location

Open in Google Maps
CarriesRoad 160 North
CrossesMilk River 037
Location30M NW Havre
RouteCounty Highway 21006
CountyHill County
StateMontana
Coordinates48.79834, -110.13369
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating11 US tons
Inventory rating8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans2 (+2 approach)
Design loadUnknown
Structure length286 ft (87.1 m)
Longest span120 ft (36.6 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed70.2 mi (113 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$641,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Road 160 North over Milk River 037 built?

It was built in 1938, making it 87 years old in 2025.

What condition is Road 160 North over Milk River 037 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.

How much traffic does Road 160 North over Milk River 037 carry?

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

How long is Road 160 North over Milk River 037?

The structure is 286 ft (87.1 m) long with a longest span of 120 ft (36.6 m) and a deck 18 ft wide.

Who owns Road 160 North over Milk River 037?

It is owned by the County Highway Agency.