US Bridges

58th Avenue over Drainage Area

PoorPosted for load

Morton County, North Dakota · 5 South 8 West of Almont · Structure no. 000000030120230

Built
1966
59 years old, rebuilt 1989
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
32 ft
1 main span
Daily traffic
25
2018 count
Owner
County
County Highway Agency

About this bridge

58th Avenue over Drainage Area is a wood or timber stringer/multi-beam or girder carrying 58th Avenue over Drainage Area in Morton County, North Dakota. It was built in 1966 and reconstructed in 1989, so it is 59 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 25 vehicles a day, projected to reach 25 by 2038. The structure is 32 ft (9.8 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries58th Avenue
CrossesDrainage Area
Location5 South 8 West of Almont
RouteCounty Highway 0
Coordinates46.65224, -101.67652
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating32 US tons
Inventory rating22.3 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.9 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 closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$203,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 58th Avenue over Drainage Area built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1989.

What condition is 58th Avenue over Drainage Area in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does 58th Avenue over Drainage Area carry?

About 25 vehicles per day (2018 count).

How long is 58th Avenue over Drainage Area?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 20 ft wide.

Who owns 58th Avenue over Drainage Area?

It is owned by the County Highway Agency.