Structure 37515 · Lac qui Parle County, MN

Csah 23 over Lac Qui Parle River

Carries Csah 23 over Lac Qui Parle River, 2.5 Mi N Of Jct Csah 2.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT126 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

126 ft end to end, longest span 42 ft. 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.

Built197155 years old
Length126.0 ft38.4 m
Daily traffic1,100counted 2016
Last inspectedSeptember 2024every 24 months

Location

StateMinnesota
CountyLac qui Parle
Location2.5 Mi N Of Jct Csah 2
CarriesCsah 23
CrossesLac Qui Parle River
Coordinates44.88480, -96.05237

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length126.0 ft (38.4 m)
Max Span42.0 ft (12.8 m)
Deck Width45.9 ft (14 m)
Deck Area537.6 sq m
Main Spans3
Year Built1971

Traffic

Avg Daily Traffic1,100 (2016)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number37515

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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