Structure 7267330 · Brown County, SD

Us012 E over Bnsf Rr

Carries Us012 E over Bnsf Rr, 3.2 W Jct Sd 37.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT433 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

433 ft end to end, longest span 221 ft: about 6 semi-trucks nose to tail. Lengths and the semi-truck 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 multi-beam bridge.

Built200521 years old
Length433.4 ft132.1 m
Daily traffic2,878counted 2024
Last inspectedJuly 2024every 24 months

Location

StateSouth Dakota
CountyBrown
Location3.2 W Jct Sd 37
CarriesUs012 E
CrossesBnsf Rr
Coordinates45.45801, -98.16941

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length433.4 ft (132.1 m)
Max Span221.1 ft (67.4 m)
Deck Width38.7 ft (11.8 m)
Deck Area1558.8 sq m
Main Spans3
Year Built2005

Traffic

Avg Daily Traffic2,878 (2024)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000007267330

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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