Structure 27538 · Hennepin County, MN

Csah 52 over Mississippi River; ST

Carries Csah 52 over Mississippi River; ST, 0.1 Mi W Of Jct Csah 23.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT383 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 5/9

383 ft end to end, longest span 102 ft: about 5 semi-trucks nose to tail. 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.

Built197353 years old
Length382.9 ft116.7 m
Daily traffic5,727counted 2021
Last inspectedOctober 2024every 12 months

Location

StateMinnesota
CountyHennepin
Location0.1 Mi W Of Jct Csah 23
CarriesCsah 52
CrossesMississippi River; ST
Coordinates44.98677, -93.25999

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length382.9 ft (116.7 m)
Max Span102.0 ft (31.1 m)
Deck Width53.8 ft (16.4 m)
Deck Area1913.9 sq m
Main Spans4
Year Built1973

Traffic

Avg Daily Traffic5,727 (2021)
Lanes On Bridge3
Lanes Under Bridge3

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number27538

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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