US Bridges

S 44th ST W over Canyon Creek Ditch 190

Fair

Yellowstone County, Montana · 7M NE Laurel · Structure no. L56584000+01001

Built
1965
60 years old, rebuilt 1978
Condition
Fair
inspected January 2025
Type
Tee Beam
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

S 44th ST W over Canyon Creek Ditch 190 is a prestressed concrete tee beam carrying S 44th ST W over Canyon Creek Ditch 190 in Yellowstone County, Montana. It was built in 1965 and reconstructed in 1978, so it is 60 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 24 ft (7.3 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS 44th ST W
CrossesCanyon Creek Ditch 190
Location7M NE Laurel
RouteCounty Highway 56584
StateMontana
Coordinates45.72628, -108.6278
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width22 ft (6.8 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S 44th ST W over Canyon Creek Ditch 190 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1978.

What condition is S 44th ST W over Canyon Creek Ditch 190 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 January 2025.

How much traffic does S 44th ST W over Canyon Creek Ditch 190 carry?

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

How long is S 44th ST W over Canyon Creek Ditch 190?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 22 ft wide.

Who owns S 44th ST W over Canyon Creek Ditch 190?

It is owned by the County Highway Agency.