Structure 50131050 · Minnehaha County, SD

249th Street over Trib To Skunk Ck

Carries 249th Street over Trib To Skunk Ck, 1s & 3.1e Colton.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

42 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.

Built199927 years old
Length42.0 ft12.8 m
Daily traffic39counted 2023
Last inspectedJune 2023every 24 months

Location

StateSouth Dakota
CountyMinnehaha
Location1s & 3.1e Colton
Carries249th Street
CrossesTrib To Skunk Ck
Coordinates43.77552, -96.86818

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length42.0 ft (12.8 m)
Max Span40.0 ft (12.2 m)
Deck Width33.5 ft (10.2 m)
Deck Area130.6 sq m
Main Spans1
Year Built1999

Traffic

Avg Daily Traffic39 (2023)
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 CriticalUnknown
Structure Number000000050131050

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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