US Bridges

45th Ave over Drainage Area

FairPosted for load

Morton County, North Dakota · 5 North of New Salem · Structure no. 000000030133050

Built
1950
75 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
10
2018 count
Owner
County
County Highway Agency

About this bridge

45th Ave over Drainage Area is a steel stringer/multi-beam or girder carrying 45th Ave over Drainage Area in Morton County, North Dakota. It was built in 1950, so it is 75 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 5 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 10 vehicles a day, projected to reach 10 by 2038. The structure is 36 ft (11 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries45th Ave
CrossesDrainage Area
Location5 North of New Salem
RouteCounty Highway 0
CountyMorton County
StateNorth Dakota
Coordinates46.91204, -101.40768
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.7 US tons
Inventory rating14.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width18 ft (5.6 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic10 by 2038
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$212,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 45th Ave over Drainage Area built?

It was built in 1950, making it 75 years old in 2025.

What condition is 45th Ave over Drainage Area 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 May 2024.

How much traffic does 45th Ave over Drainage Area carry?

About 10 vehicles per day (2018 count).

How long is 45th Ave over Drainage Area?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 18 ft wide.

Who owns 45th Ave over Drainage Area?

It is owned by the County Highway Agency.