US Bridges

72nd Ave SW over Cannonball River

PoorPosted for load

Grant County, North Dakota · 2 S 1 E New Leipzig · Structure no. 000000019109260

Built
1944
81 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
144 ft
3 main spans
Daily traffic
20
2018 count
Owner
County
County Highway Agency

About this bridge

72nd Ave SW over Cannonball River is a steel stringer/multi-beam or girder carrying 72nd Ave SW over Cannonball River in Grant County, North Dakota. It was built in 1944, so it is 81 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 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 20 vehicles a day, projected to reach 20 by 2038. The structure is 144 ft (43.9 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries72nd Ave SW
CrossesCannonball River
Location2 S 1 E New Leipzig
RouteCounty Highway 0
CountyGrant County
StateNorth Dakota
Coordinates46.34043, -101.91269
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.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating11.8 US tons
Inventory rating6.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length144 ft (43.9 m)
Longest span60 ft (18.3 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2018)
Projected traffic20 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$359,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 72nd Ave SW over Cannonball River built?

It was built in 1944, making it 81 years old in 2025.

What condition is 72nd Ave SW over Cannonball River 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 June 2024.

How much traffic does 72nd Ave SW over Cannonball River carry?

About 20 vehicles per day (2018 count).

How long is 72nd Ave SW over Cannonball River?

The structure is 144 ft (43.9 m) long with a longest span of 60 ft (18.3 m) and a deck 22 ft wide.

Who owns 72nd Ave SW over Cannonball River?

It is owned by the County Highway Agency.