US Bridges

County Road 055 over Dodson North Canal 013

PoorPosted for load

Phillips County, Montana · W Dodson · Structure no. L36178000+01001

Built
1986
39 years old
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
5
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 055 over Dodson North Canal 013 is a steel stringer/multi-beam or girder carrying County Road 055 over Dodson North Canal 013 in Phillips County, Montana. It was built in 1986, so it is 39 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, roughly 3% of them trucks, projected to reach 5 by 2043. The structure is 26 ft (7.9 m) long and 19 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCounty Road 055
CrossesDodson North Canal 013
LocationW Dodson
RouteCounty Highway 36055
StateMontana
Coordinates48.40056, -108.25947
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating5 US tons
Inventory rating5 US tons

Structure

MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2023)
Projected traffic5 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$111,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 055 over Dodson North Canal 013 built?

It was built in 1986, making it 39 years old in 2025.

What condition is County Road 055 over Dodson North Canal 013 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does County Road 055 over Dodson North Canal 013 carry?

About 5 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County Road 055 over Dodson North Canal 013?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 19 ft wide.

Who owns County Road 055 over Dodson North Canal 013?

It is owned by the County Highway Agency.