Structure 62180224 · Tripp County, SD

314 Avenue over Dog Ear Ck

Carries 314 Avenue over Dog Ear Ck, 10e & 0.6n Witten.

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
23 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 23 ft across with 3 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built201115 years old
Length23.0 ft7 m
Daily traffic50counted 2022
Last inspectedJune 2023every 24 months

Location

StateSouth Dakota
CountyTripp
Location10e & 0.6n Witten
Carries314 Avenue
CrossesDog Ear Ck
Coordinates43.45208, -99.88985

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length23.0 ft (7 m)
Max Span5.9 ft (1.8 m)
Deck Area51.1 sq m
Main Spans3
Year Built2011

Traffic

Avg Daily Traffic50 (2022)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000062180224

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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