Structure 79518 · Wabasha County, MN

T 87 over Trout Brook

Carries T 87 over Trout Brook, 0.3 Mi S Of Jct CR 83.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT122 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

122 ft end to end, longest span 40 ft. 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 tee-beam bridge.

Built197848 years old
Length121.7 ft37.1 m
Daily traffic25counted 1986
Last inspectedOctober 2024every 24 months

Location

StateMinnesota
CountyWabasha
Location0.3 Mi S Of Jct CR 83
CarriesT 87
CrossesTrout Brook
Coordinates44.29923, -92.53161

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length121.7 ft (37.1 m)
Max Span40.0 ft (12.2 m)
Deck Width32.2 ft (9.8 m)
Deck Area363.6 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic25 (1986)
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 Critical8 — Stable, low risk
Structure Number79518

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.

Nearby Bridges