Structure 44129220 · Slope County, ND

76th Street SW over Deep Creek

Carries 76th Street SW over Deep Creek, 8 N 2.5 W Of Bowman.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT50 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

50 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 tee-beam bridge.

Built198739 years old
Length49.9 ft15.2 m
Daily traffic50counted 2018
Last inspectedAugust 2023every 24 months

Location

StateNorth Dakota
CountySlope
Location8 N 2.5 W Of Bowman
Carries76th Street SW
CrossesDeep Creek
Coordinates46.30894, -103.45462

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length49.9 ft (15.2 m)
Max Span47.9 ft (14.6 m)
Deck Width28.5 ft (8.7 m)
Deck Area132.2 sq m
Main Spans1
Year Built1987

Traffic

Avg Daily Traffic50 (2018)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000044129220

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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