Structure 39117220 · Richland County, ND

County Highway over Antelope Creek

Carries County Highway over Antelope Creek, 4 North 2 West Mooreton.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT47 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

47 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.

Built193690 years old
Length46.9 ft14.3 m
Daily traffic10counted 2018
Last inspectedJuly 2020

Location

StateNorth Dakota
CountyRichland
Location4 North 2 West Mooreton
CarriesCounty Highway
CrossesAntelope Creek
Coordinates46.31795, -96.92508

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length46.9 ft (14.3 m)
Max Span45.9 ft (14 m)
Deck Width18.0 ft (5.5 m)
Deck Area78.7 sq m
Main Spans1
Year Built1936

Traffic

Avg Daily Traffic10 (2018)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2020
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalUnknown
Structure Number000000039117220

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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