Structure 68120077 · Yankton County, SD

Us081 over James Rv

Carries Us081 over James Rv, 1.7 S Jct Sd 46.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT307 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

307 ft end to end, longest span 117 ft: about 4 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.

Built200026 years old
Length307.4 ft93.7 m
Daily traffic3,545counted 2024
Last inspectedOctober 2022every 48 months

Location

StateSouth Dakota
CountyYankton
Location1.7 S Jct Sd 46
CarriesUs081
CrossesJames Rv
Coordinates43.05829, -97.39868

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length307.4 ft (93.7 m)
Max Span117.5 ft (35.8 m)
Deck Width42.7 ft (13 m)
Deck Area1218.1 sq m
Main Spans3
Year Built2000

Traffic

Avg Daily Traffic3,545 (2024)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000068120077

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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