Structure 69808A · St. Louis County, MN

Con 504 over Garfield Nb; SB

Carries Con 504 over Garfield Nb; SB, 0.7 Mi S Of Jct TH 35.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT430 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

430 ft end to end, longest span 100 ft: about 6 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.

Built1969rebuilt 2024
Length430.4 ft131.2 m
Daily traffic1,550counted 2019
Last inspectedJuly 2024every 24 months

Location

StateMinnesota
CountySt. Louis
Location0.7 Mi S Of Jct TH 35
CarriesCon 504
CrossesGarfield Nb; SB
Coordinates46.75709, -92.10742

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length430.4 ft (131.2 m)
Max Span100.1 ft (30.5 m)
Deck Width25.9 ft (7.9 m)
Deck Area1036.5 sq m
Main Spans5
Year Built1969 (reconstructed 2024)

Traffic

Avg Daily Traffic1,550 (2019)
Lanes On Bridge1
Lanes Under Bridge3

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number69808A

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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