Structure L8917 · Hennepin County, MN

M 804 over Midtown Greenway

Carries M 804 over Midtown Greenway, 0.1 Mi N Of Lake ST.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 5/9

94 ft end to end, longest span 31 ft. 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.

Built1915111 years old
Length94.5 ft28.8 m
Daily traffic1,544counted 2018
Last inspectedJune 2024every 12 months

Location

StateMinnesota
CountyHennepin
Location0.1 Mi N Of Lake ST
CarriesM 804
CrossesMidtown Greenway
Coordinates44.95036, -93.25758

Physical Characteristics

MaterialConcrete Continuous
DesignStringer/Multi-beam
Total Length94.5 ft (28.8 m)
Max Span31.5 ft (9.6 m)
Deck Width50.9 ft (15.5 m)
Deck Area446.4 sq m
Main Spans3
Year Built1915

Traffic

Avg Daily Traffic1,544 (2018)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour CriticalNot applicable
Structure NumberL8917

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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