Structure 62040 · Ramsey County, MN

Mn 51 over Co RD B2 (csah 78)

Carries Mn 51 over Co RD B2 (csah 78), 0.2 Mi N Of Jct TH 36.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT209 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

209 ft end to end, longest span 105 ft: about 3 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.

Built196957 years old
Length209.0 ft63.7 m
Daily traffic46,000counted 2019
Last inspectedMay 2024every 24 months

Location

StateMinnesota
CountyRamsey
Location0.2 Mi N Of Jct TH 36
CarriesMn 51
CrossesCo RD B2 (csah 78)
Coordinates45.01346, -93.16698

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length209.0 ft (63.7 m)
Max Span104.7 ft (31.9 m)
Deck Width90.2 ft (27.5 m)
Deck Area1751.8 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic46,000 (2019)
Truck Traffic2%
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number62040

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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