Structure 1816 · Pope County, MN

Csah 21 over E Br Chippewa River

Carries Csah 21 over E Br Chippewa River, 0.1 Mi S Of Jct Csah 23.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 5/9 · sets the rating

30 ft end to end. Lengths and the car 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 slab bridge.

Built1918rebuilt 1998
Length30.2 ft9.2 m
Daily traffic85counted 2019
Last inspectedAugust 2024every 24 months

Location

StateMinnesota
CountyPope
Location0.1 Mi S Of Jct Csah 23
CarriesCsah 21
CrossesE Br Chippewa River
Coordinates45.51143, -95.32095

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length30.2 ft (9.2 m)
Max Span27.6 ft (8.4 m)
Deck Width25.9 ft (7.9 m)
Deck Area72.7 sq m
Main Spans1
Year Built1918 (reconstructed 1998)

Traffic

Avg Daily Traffic85 (2019)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1816

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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