Structure 29189439 · Pembina County, ND

Interstate 29 over Drainage Ditch

Carries Interstate 29 over Drainage Ditch, 3 North Nd 66.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 30 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built20215 years old
Length30.2 ft9.2 m
Daily traffic3,825counted 2018
Last inspectedJune 2023every 48 months

Location

StateNorth Dakota
CountyPembina
Location3 North Nd 66
CarriesInterstate 29
CrossesDrainage Ditch
Coordinates48.60753, -97.18037

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length30.2 ft (9.2 m)
Max Span14.1 ft (4.3 m)
Deck Area106.7 sq m
Main Spans2
Year Built2021

Traffic

Avg Daily Traffic3,825 (2018)
Truck Traffic41%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number0029189439

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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