Structure 58538 · Pine County, MN

T 781 over Little Willow River

Carries T 781 over Little Willow River, 0.4 Mi E Of Jct CR 155.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT91 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

91 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 multi-beam bridge.

Built199927 years old
Length90.9 ft27.7 m
Daily traffic20counted 1998
Last inspectedOctober 2024every 24 months

Location

StateMinnesota
CountyPine
Location0.4 Mi E Of Jct CR 155
CarriesT 781
CrossesLittle Willow River
Coordinates46.31733, -92.69184

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length90.9 ft (27.7 m)
Max Span82.0 ft (25 m)
Deck Width31.2 ft (9.5 m)
Deck Area263.1 sq m
Main Spans1
Year Built1999

Traffic

Avg Daily Traffic20 (1998)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number58538

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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