Structure 31543 · Itasca County, MN

CR 237 over Big Fork

Carries CR 237 over Big Fork, 0.3 Mi E Of Jct Csah 42.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT142 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

142 ft end to end, longest span 47 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.

Built200125 years old
Length142.1 ft43.3 m
Daily traffic88counted 2021
Last inspectedMay 2024every 24 months

Location

StateMinnesota
CountyItasca
Location0.3 Mi E Of Jct Csah 42
CarriesCR 237
CrossesBig Fork
Coordinates47.78298, -93.60204

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length142.1 ft (43.3 m)
Max Span47.2 ft (14.4 m)
Deck Width35.1 ft (10.7 m)
Deck Area463.3 sq m
Main Spans3
Year Built2001

Traffic

Avg Daily Traffic88 (2021)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number31543

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.

Nearby Bridges