Structure 19831 · Dakota County, MN

Csah 63 over I 494

Carries Csah 63 over I 494, 2.0 Mi E Of Jct TH 35e.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT332 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

332 ft end to end, longest span 180 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.

Built198541 years old
Length332.0 ft101.2 m
Daily traffic2,803counted 2021
Last inspectedOctober 2023every 24 months

Location

StateMinnesota
CountyDakota
Location2.0 Mi E Of Jct TH 35e
CarriesCsah 63
CrossesI 494
Coordinates44.86117, -93.10596

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length332.0 ft (101.2 m)
Max Span180.1 ft (54.9 m)
Deck Width54.5 ft (16.6 m)
Deck Area1679.9 sq m
Main Spans2
Year Built1985

Traffic

Avg Daily Traffic2,803 (2021)
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number19831

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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