Structure L4436 · Kittson County, MN

T 310 over N Br Two Rivers

Carries T 310 over N Br Two Rivers, 0.3 Mi E Of Jct Csah 1.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 0 of 9.

How ratings work
Decksets the rating0/9 · Failed
Superstructuresets the rating0/9 · Failed
Substructuresets the rating0/9 · Failed
Channelnot part of overall0/9 · Failed
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 0/9Superstructure 0/9Substructure 0/9

51 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 through truss.

Built1907119 years old
Length50.9 ft15.5 m
Daily traffic12counted 1991
Last inspectedOctober 2012every 12 months

Location

StateMinnesota
CountyKittson
Location0.3 Mi E Of Jct Csah 1
CarriesT 310
CrossesN Br Two Rivers
Coordinates48.84668, -96.92478

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length50.9 ft (15.5 m)
Max Span48.9 ft (14.9 m)
Deck Width16.4 ft (5 m)
Deck Area77.5 sq m
Main Spans1
Year Built1907

Traffic

Avg Daily Traffic12 (1991)
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2012
Inspection FrequencyEvery 12 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical6 — Scour calculated, stable
Structure NumberL4436

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