US Bridges

144th Avenue over Alkali Creek

FairPosted for load

Bowman County, North Dakota · 1 East 12 South Bowman · Structure no. 000000006133200

Built
1967
58 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
24
2019 count
Owner
County
County Highway Agency

About this bridge

144th Avenue over Alkali Creek is a steel stringer/multi-beam or girder carrying 144th Avenue over Alkali Creek in Bowman County, North Dakota. It was built in 1967, so it is 58 years old, older than the North Dakota average of 48.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 24 vehicles a day, projected to reach 25 by 2039. The structure is 30 ft (9.2 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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Carries144th Avenue
CrossesAlkali Creek
Location1 East 12 South Bowman
RouteCounty Highway 0
CountyBowman County
StateNorth Dakota
Coordinates46.00028, -103.36932
Functional classRural 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.7 US tons
Inventory rating14 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length30 ft (9.2 m)
Longest span30 ft (9.1 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2019)
Projected traffic25 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$74,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 144th Avenue over Alkali Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is 144th Avenue over Alkali Creek 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 October 2023.

How much traffic does 144th Avenue over Alkali Creek carry?

About 24 vehicles per day (2019 count).

How long is 144th Avenue over Alkali Creek?

The structure is 30 ft (9.2 m) long with a longest span of 30 ft (9.1 m) and a deck 18 ft wide.

Who owns 144th Avenue over Alkali Creek?

It is owned by the County Highway Agency.