Structure 62517 · Ramsey County, MN

Msas 156 over Ayd Mill Ramps

Carries Msas 156 over Ayd Mill Ramps, At The Jct Ayd Mill RD.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT233 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

233 ft end to end, longest span 91 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.

Built197056 years old
Length232.9 ft71 m
Daily traffic3,150counted 2012
Last inspectedAugust 2024every 24 months

Location

StateMinnesota
CountyRamsey
LocationAt The Jct Ayd Mill RD
CarriesMsas 156
CrossesAyd Mill Ramps
Coordinates44.93057, -93.14400

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length232.9 ft (71 m)
Max Span90.9 ft (27.7 m)
Deck Width57.1 ft (17.4 m)
Deck Area1235.4 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic3,150 (2012)
Lanes On Bridge2
Lanes Under Bridge3

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number62517

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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