Structure 26374023 · Grant County, SD

2nd Avenue over Bnsf Railroad

Carries 2nd Avenue over Bnsf Railroad, 2nd Ave. Big Stone City.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 1 of 9.

How ratings work
Deck5/9 · Fair
Superstructure3/9 · Serious
Substructuresets the rating1/9 · Imminent Failure
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT228 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 3/9Substructure 1/9 · sets the rating

228 ft end to end, longest span 40 ft: about 3 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 girder bridge.

Built1914112 years old
Length228.0 ft69.5 m
Daily traffic2,560counted 2022
Last inspectedSeptember 2024every 12 months

Location

StateSouth Dakota
CountyGrant
Location2nd Ave. Big Stone City
Carries2nd Avenue
CrossesBnsf Railroad
Coordinates45.29368, -96.46409

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length228.0 ft (69.5 m)
Max Span40.0 ft (12.2 m)
Deck Width36.1 ft (11 m)
Deck Area764.5 sq m
Main Spans5
Year Built1914

Traffic

Avg Daily Traffic2,560 (2022)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalNot applicable
Structure Number000000026374023

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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