Structure B06007900000000 · Buffalo County, WI

Sth 25 over Mississippi River 09

Carries Sth 25 over Mississippi River 09, Minnesota State Line.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,461 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

2,461 ft end to end: about 6.8 football fields. 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 through truss.

Built198838 years old
Length2461.3 ft750.2 m
Daily traffic4,500counted 2022
Last inspectedJune 2024every 24 months

Location

StateWisconsin
CountyBuffalo
LocationMinnesota State Line
CarriesSth 25
CrossesMississippi River 09
Coordinates44.38356, -92.03493

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length2461.3 ft (750.2 m)
Max Span470.1 ft (143.3 m)
Deck Width43.3 ft (13.2 m)
Deck Area9902.6 sq m
Main Spans1
Year Built1988

Traffic

Avg Daily Traffic4,500 (2022)
Lanes On Bridge2
Lanes Under Bridge9

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB06007900000000

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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