Structure 33110037 · Hughes County, SD

287 Avenue over Spring Ck Trib

Carries 287 Avenue over Spring Ck Trib, 8.2n & 0.5w Pierre.

Overall conditionGood

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

How ratings work
Culvertsets the rating9/9 · Excellent
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
21 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 9/9

A culvert 21 ft across with 2 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.

Built201610 years old
Length20.7 ft6.3 m
Daily traffic150counted 2022
Last inspectedJune 2024every 24 months

Location

StateSouth Dakota
CountyHughes
Location8.2n & 0.5w Pierre
Carries287 Avenue
CrossesSpring Ck Trib
Coordinates44.49348, -100.35077

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length20.7 ft (6.3 m)
Max Span9.8 ft (3 m)
Deck Area53.5 sq m
Main Spans2
Year Built2016

Traffic

Avg Daily Traffic150 (2022)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000033110037

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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