US Bridges

122nd Ave SW over South Branch Heart River

Fair

Stark County, North Dakota · 1 W 1 S South Heart · Structure no. 000000045110120

Built
1985
40 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
92 ft
3 main spans
Daily traffic
50
2018 count
Owner
County
County Highway Agency

About this bridge

122nd Ave SW over South Branch Heart River is a prestressed concrete continuous box beam or girders - single or spread carrying 122nd Ave SW over South Branch Heart River in Stark County, North Dakota. It was built in 1985, so it is 40 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 40 by 2038. The structure is 92 ft (28 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries122nd Ave SW
CrossesSouth Branch Heart River
Location1 W 1 S South Heart
RouteCounty Highway 0
CountyStark County
StateNorth Dakota
Coordinates46.84008, -103.02008
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating26.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length92 ft (28 m)
Longest span33 ft (10.1 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2018)
Projected traffic40 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 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 Ave SW over South Branch Heart River built?

It was built in 1985, making it 40 years old in 2025.

What condition is 122nd Ave SW over South Branch 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 Ave SW over South Branch Heart River carry?

About 50 vehicles per day (2018 count).

How long is 122nd Ave SW over South Branch Heart River?

The structure is 92 ft (28 m) long with a longest span of 33 ft (10.1 m) and a deck 33 ft wide.

Who owns 122nd Ave SW over South Branch Heart River?

It is owned by the County Highway Agency.