Structure 26801 · Grant County, MN

Csah 4 over I 94

Carries Csah 4 over I 94, 3.0 Mi NW Of Jct TH 78.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT320 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

320 ft end to end, longest span 96 ft: about 4 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.

Built196363 years old
Length320.2 ft97.6 m
Daily traffic295counted 2018
Last inspectedOctober 2024every 24 months

Location

StateMinnesota
CountyGrant
Location3.0 Mi NW Of Jct TH 78
CarriesCsah 4
CrossesI 94
Coordinates46.07648, -95.87376

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length320.2 ft (97.6 m)
Max Span96.5 ft (29.4 m)
Deck Width33.5 ft (10.2 m)
Deck Area995.5 sq m
Main Spans4
Year Built1963

Traffic

Avg Daily Traffic295 (2018)
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number26801

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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