US Bridges

US 191 over Dodson South Canal

Fair

Phillips County, Montana · South Edge of Malta · Structure no. P00061156+08111

Built
2000
25 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
93 ft
1 main span
Daily traffic
2,221
2023 count
Owner
State
State Highway Agency

About this bridge

US 191 over Dodson South Canal is a prestressed concrete stringer/multi-beam or girder carrying US 191 over Dodson South Canal in Phillips County, Montana. It was built in 2000, so it is 25 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,221 vehicles a day, roughly 2% of them trucks, projected to reach 2,332 by 2043. The structure is 93 ft (28.3 m) long and 42 ft wide. If it were closed, the detour would be 90.7 mi (146 km).

Location

Open in Google Maps
CarriesUS 191
CrossesDodson South Canal
LocationSouth Edge of Malta
RouteU.S. Route 191
CountyPhillips County
StateMontana
Coordinates48.3495, -107.87472
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length93 ft (28.3 m)
Longest span92 ft (28 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,221 (2023)
Projected traffic2,332 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed90.7 mi (146 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 191 over Dodson South Canal built?

It was built in 2000, making it 25 years old in 2025.

What condition is US 191 over Dodson South Canal 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 February 2024.

How much traffic does US 191 over Dodson South Canal carry?

About 2,221 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is US 191 over Dodson South Canal?

The structure is 93 ft (28.3 m) long with a longest span of 92 ft (28 m) and a deck 42 ft wide.

Who owns US 191 over Dodson South Canal?

It is owned by the State Highway Agency.