Structure L1808 · Lyon County, MN

T 26 over Big Cottonwood River

Carries T 26 over Big Cottonwood River, 1.5 Mi W Of Jct TH 59.

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
25 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

25 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built1925101 years old
Length24.6 ft7.5 m
Daily traffic13counted 1992
Last inspectedOctober 2023every 24 months

Location

StateMinnesota
CountyLyon
Location1.5 Mi W Of Jct TH 59
CarriesT 26
CrossesBig Cottonwood River
Coordinates44.28285, -95.78741

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length24.6 ft (7.5 m)
Max Span20.3 ft (6.2 m)
Deck Width15.7 ft (4.8 m)
Deck Area36 sq m
Main Spans1
Year Built1925

Traffic

Avg Daily Traffic13 (1992)
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure NumberL1808

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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