US Bridges

74th Ave over Heart Butte Creek

FairPosted for load

Morton County, North Dakota · 1 East 7 South of Hebron · Structure no. 000000030104130

Built
1936
89 years old, rebuilt 1975
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
29 ft
1 main span
Daily traffic
24
2018 count
Owner
County
County Highway Agency

About this bridge

74th Ave over Heart Butte Creek is a wood or timber stringer/multi-beam or girder carrying 74th Ave over Heart Butte Creek in Morton County, North Dakota. It was built in 1936 and reconstructed in 1975, so it is 89 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 6 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 24 by 2038. The structure is 29 ft (8.8 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries74th Ave
CrossesHeart Butte Creek
Location1 East 7 South of Hebron
RouteCounty Highway 0
CountyMorton County
StateNorth Dakota
Coordinates46.80107, -102.01254
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.4 US tons
Inventory rating16.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span26 ft (7.9 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2018)
Projected traffic24 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$57,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 74th Ave over Heart Butte Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1975.

What condition is 74th Ave over Heart Butte 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 September 2024.

How much traffic does 74th Ave over Heart Butte Creek carry?

About 24 vehicles per day (2018 count).

How long is 74th Ave over Heart Butte Creek?

The structure is 29 ft (8.8 m) long with a longest span of 26 ft (7.9 m) and a deck 24 ft wide.

Who owns 74th Ave over Heart Butte Creek?

It is owned by the County Highway Agency.