Structure 32107290 · Nelson County, ND

County Highway over Sheyenne River

Carries County Highway over Sheyenne River, 3 East 3 South Of Tolna.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
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 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

105 ft end to end, longest span 44 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 tee-beam bridge.

Built197848 years old
Length105.0 ft32 m
Daily traffic25counted 2017
Last inspectedAugust 2024every 24 months

Location

StateNorth Dakota
CountyNelson
Location3 East 3 South Of Tolna
CarriesCounty Highway
CrossesSheyenne River
Coordinates47.78112, -98.38003

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length105.0 ft (32 m)
Max Span44.0 ft (13.4 m)
Deck Width29.9 ft (9.1 m)
Deck Area291.2 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic25 (2017)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number000000032107290

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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