US Bridges

Heil Road over Cannonball River

GoodPosted for load

Grant County, North Dakota · 6 South 4 West of Leith · Structure no. 000000019118310

Built
1945
80 years old, rebuilt 1951
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
197 ft
3 main spans
Daily traffic
80
2018 count
Owner
County
County Highway Agency

About this bridge

Heil Road over Cannonball River is a steel stringer/multi-beam or girder carrying Heil Road over Cannonball River in Grant County, North Dakota. It was built in 1945 and reconstructed in 1951, so it is 80 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 80 vehicles a day, projected to reach 60 by 2038. The structure is 197 ft (60 m) long and 22 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesHeil Road
CrossesCannonball River
Location6 South 4 West of Leith
RouteCounty Highway 1919
CountyGrant County
StateNorth Dakota
Coordinates46.28, -101.7082
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.7 US tons
Inventory rating13.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadUnknown
Structure length197 ft (60 m)
Longest span70 ft (21.3 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2018)
Projected traffic60 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$444,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Heil Road over Cannonball River built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1951.

What condition is Heil Road over Cannonball River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Heil Road over Cannonball River carry?

About 80 vehicles per day (2018 count).

How long is Heil Road over Cannonball River?

The structure is 197 ft (60 m) long with a longest span of 70 ft (21.3 m) and a deck 22 ft wide.

Who owns Heil Road over Cannonball River?

It is owned by the County Highway Agency.