Structure 3310256 · Beadle County, SD

407 AVE over Pearl Ck

Carries 407 AVE over Pearl Ck, 7.6s 2w Cavour.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT53 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

53 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 through truss.

Built1911115 years old
Length53.1 ft16.2 m
Daily traffic56counted 2022
Last inspectedOctober 2013every 24 months

Location

StateSouth Dakota
CountyBeadle
Location7.6s 2w Cavour
Carries407 AVE
CrossesPearl Ck
Coordinates44.25854, -98.07435

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length53.1 ft (16.2 m)
Max Span49.9 ft (15.2 m)
Deck Width18.0 ft (5.5 m)
Deck Area89.1 sq m
Main Spans1
Year Built1911

Traffic

Avg Daily Traffic56 (2022)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2013
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalUnknown
Structure Number000000003310256

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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