US Bridges

Road 220 over Carroll Coulee

PoorPosted for load

Fergus County, Montana · Sect 22 T21N R26E · Structure no. 000061520-00038

Built
1963
62 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
3 main spans
Daily traffic
1
2024 count
Owner
Federal
Bureau of Fish and Wildlife

About this bridge

Road 220 over Carroll Coulee is a wood or timber stringer/multi-beam or girder carrying Road 220 over Carroll Coulee in Fergus County, Montana. It was built in 1963, so it is 62 years old, older 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 1 vehicles a day, projected to reach 1 by 2044. The structure is 40 ft (12.2 m) long and 12 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesRoad 220
CrossesCarroll Coulee
LocationSect 22 T21N R26E
RouteFederal Lands Road 0
CountyFergus County
StateMontana
Coordinates47.56933, -108.3695
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span13 ft (4 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic1 (2024)
Projected traffic1 by 2044
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Fish and Wildlife
Maintained byBureau of Fish and Wildlife
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$320,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Road 220 over Carroll Coulee built?

It was built in 1963, making it 62 years old in 2025.

What condition is Road 220 over Carroll Coulee 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 August 2024.

How much traffic does Road 220 over Carroll Coulee carry?

About 1 vehicles per day (2024 count).

How long is Road 220 over Carroll Coulee?

The structure is 40 ft (12.2 m) long with a longest span of 13 ft (4 m) and a deck 12 ft wide.

Who owns Road 220 over Carroll Coulee?

It is owned by the Bureau of Fish and Wildlife.