Structure 30129181 · Morton County, ND

49 1/2 Avenue over Big Muddy Creek

Carries 49 1/2 Avenue over Big Muddy Creek, 1 E 1 S Almont.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall3/9 · Serious
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

94 ft end to end, longest span 39 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1940rebuilt 2002
Length94.2 ft28.7 m
Daily traffic10counted 2018
Last inspectedJuly 2023every 24 months

Location

StateNorth Dakota
CountyMorton
Location1 E 1 S Almont
Carries49 1/2 Avenue
CrossesBig Muddy Creek
Coordinates46.71750, -101.49354

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length94.2 ft (28.7 m)
Max Span39.0 ft (11.9 m)
Deck Width20.0 ft (6.1 m)
Deck Area175.1 sq m
Main Spans3
Year Built1940 (reconstructed 2002)

Traffic

Avg Daily Traffic10 (2018)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalUnknown
Structure Number000000030129181

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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