Structure 4114030 · Billings County, ND

Upper Magpie Road over North Creek

Carries Upper Magpie Road over North Creek, 6 North 8 West Fairfield.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT61 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 7/9

61 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 through truss.

Built1916110 years old
Length61.0 ft18.6 m
Daily traffic10counted 2018
Last inspectedSeptember 2023every 24 months

Location

StateNorth Dakota
CountyBillings
Location6 North 8 West Fairfield
CarriesUpper Magpie Road
CrossesNorth Creek
Coordinates47.28635, -103.37515

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length61.0 ft (18.6 m)
Max Span59.1 ft (18 m)
Deck Width16.1 ft (4.9 m)
Deck Area91.1 sq m
Main Spans1
Year Built1916

Traffic

Avg Daily Traffic10 (2018)
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000004114030

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.