US Bridges

58th Ave SW over Heart River

Good

Grant County, North Dakota · 9 North 2 West of Carson · Structure no. 000000019123100

Built
1981
44 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
178 ft
3 main spans
Daily traffic
25
2018 count
Owner
County
County Highway Agency

About this bridge

58th Ave SW over Heart River is a prestressed concrete box beam or girders - single or spread carrying 58th Ave SW over Heart River in Grant County, North Dakota. It was built in 1981, so it is 44 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 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.

It carries about 25 vehicles a day, projected to reach 25 by 2038. The structure is 178 ft (54.3 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries58th Ave SW
CrossesHeart River
Location9 North 2 West of Carson
RouteCounty Highway 0
CountyGrant County
StateNorth Dakota
Coordinates46.57451, -101.62874
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.8 US tons
Inventory rating9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length178 ft (54.3 m)
Longest span73 ft (22.3 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2018)
Projected traffic25 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$218,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 58th Ave SW over Heart River built?

It was built in 1981, making it 44 years old in 2025.

What condition is 58th Ave SW over Heart 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 June 2024.

How much traffic does 58th Ave SW over Heart River carry?

About 25 vehicles per day (2018 count).

How long is 58th Ave SW over Heart River?

The structure is 178 ft (54.3 m) long with a longest span of 73 ft (22.3 m) and a deck 32 ft wide.

Who owns 58th Ave SW over Heart River?

It is owned by the County Highway Agency.