US Bridges

4th ST over Usbr Main Canal 073

Good

Richland County, Montana · West Edge FAIRVIEW-4th ST · Structure no. M42042000+00101

Built
2008
17 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
341
2023 count
Owner
County
County Highway Agency

About this bridge

4th ST over Usbr Main Canal 073 is a steel stringer/multi-beam or girder carrying 4th ST over Usbr Main Canal 073 in Richland County, Montana. It was built in 2008, so it is 17 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 341 vehicles a day, roughly 3% of them trucks, projected to reach 363 by 2043. The structure is 36 ft (11 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries4th ST
CrossesUsbr Main Canal 073
LocationWest Edge FAIRVIEW-4th ST
RouteCity Street 42042
CountyRichland County
StateMontana
Coordinates47.85341, -104.05222
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 protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span36 ft (11 m)
Deck width29 ft (8.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic341 (2023)
Projected traffic363 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$43,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 4th ST over Usbr Main Canal 073 built?

It was built in 2008, making it 17 years old in 2025.

What condition is 4th ST over Usbr Main Canal 073 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 February 2023.

How much traffic does 4th ST over Usbr Main Canal 073 carry?

About 341 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 4th ST over Usbr Main Canal 073?

The structure is 36 ft (11 m) long with a longest span of 36 ft (11 m) and a deck 29 ft wide.

Who owns 4th ST over Usbr Main Canal 073?

It is owned by the County Highway Agency.