Structure 5907 · Morrison County, MN

Mn 27 over Mississippi River

Carries Mn 27 over Mississippi River, In Little Falls.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT546 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

546 ft end to end, longest span 100 ft: about 1.5 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 multi-beam bridge.

Built1941rebuilt 1983
Length545.6 ft166.3 m
Daily traffic14,200counted 2019
Last inspectedJuly 2024every 24 months

Location

StateMinnesota
CountyMorrison
LocationIn Little Falls
CarriesMn 27
CrossesMississippi River
Coordinates45.97713, -94.36836

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length545.6 ft (166.3 m)
Max Span100.4 ft (30.6 m)
Deck Width70.2 ft (21.4 m)
Deck Area3558.8 sq m
Main Spans5
Year Built1941 (reconstructed 1983)

Traffic

Avg Daily Traffic14,200 (2019)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number5907

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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