US Bridges

122nd Avenue SW over Heart River

Fair

Stark County, North Dakota · 1 West of South Heart · Structure no. 000000045110100

Built
1996
29 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
79 ft
1 main span
Daily traffic
50
2018 count
Owner
County
County Highway Agency

About this bridge

122nd Avenue SW over Heart River is a prestressed concrete continuous box beam or girders - single or spread carrying 122nd Avenue SW over Heart River in Stark County, North Dakota. It was built in 1996, so it is 29 years old, younger 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.

It carries about 50 vehicles a day, projected to reach 24 by 2038. The structure is 79 ft (24.1 m) long and 31 ft wide.

Location

Open in Google Maps
Carries122nd Avenue SW
CrossesHeart River
Location1 West of South Heart
RouteCounty Highway 0
CountyStark County
StateNorth Dakota
Coordinates46.86527, -103.02031
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.7 US tons
Inventory rating28.4 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length79 ft (24.1 m)
Longest span78 ft (23.8 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2018)
Projected traffic24 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 122nd Avenue SW over Heart River built?

It was built in 1996, making it 29 years old in 2025.

What condition is 122nd Avenue SW over Heart River 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 August 2024.

How much traffic does 122nd Avenue SW over Heart River carry?

About 50 vehicles per day (2018 count).

How long is 122nd Avenue SW over Heart River?

The structure is 79 ft (24.1 m) long with a longest span of 78 ft (23.8 m) and a deck 31 ft wide.

Who owns 122nd Avenue SW over Heart River?

It is owned by the County Highway Agency.