Structure 30113040 · Morton County, ND

33 1/2 ST over Drainage Area

Carries 33 1/2 ST over Drainage Area, 7 North Of Glen Ullin.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating3/9 · Serious
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 3/9 · sets the rating

29 ft end to end. 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.

Built196660 years old
Length28.9 ft8.8 m
Daily traffic20counted 2018
Last inspectedNovember 2024every 12 months

Location

StateNorth Dakota
CountyMorton
Location7 North Of Glen Ullin
Carries33 1/2 ST
CrossesDrainage Area
Coordinates46.92791, -101.83854

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length28.9 ft (8.8 m)
Max Span25.9 ft (7.9 m)
Deck Width21.0 ft (6.4 m)
Deck Area56.3 sq m
Main Spans1
Year Built1966

Traffic

Avg Daily Traffic20 (2018)
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000030113040

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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