Structure 29171723 · Walsh County, ND

County Highway over I-29/PULASKI Interchange

Carries County Highway over I-29/PULASKI Interchange, 4 South Of Nd 17.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT235 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

235 ft end to end, longest span 114 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built1971rebuilt 2017
Length234.9 ft71.6 m
Daily traffic100counted 2019
Last inspectedApril 2023every 24 months

Location

StateNorth Dakota
CountyWalsh
Location4 South Of Nd 17
CarriesCounty Highway
CrossesI-29/PULASKI Interchange
Coordinates48.35321, -97.18943

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length234.9 ft (71.6 m)
Max Span113.8 ft (34.7 m)
Deck Width34.8 ft (10.6 m)
Deck Area759.0 sq m
Main Spans2
Year Built1971 (reconstructed 2017)

Traffic

Avg Daily Traffic100 (2019)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0029171723

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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