Structure 71511 · Sherburne County, MN

Csah 16 over Elk River

Carries Csah 16 over Elk River, 0.1 Mi W Of Jct Csah20.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 4/9 · sets the rating

105 ft end to end, longest span 35 ft. 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 multi-beam bridge.

Built197254 years old
Length105.0 ft32 m
Daily traffic2,300counted 2018
Last inspectedOctober 2024every 12 months

Location

StateMinnesota
CountySherburne
Location0.1 Mi W Of Jct Csah20
CarriesCsah 16
CrossesElk River
Coordinates45.48663, -94.00716

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length105.0 ft (32 m)
Max Span35.1 ft (10.7 m)
Deck Width38.1 ft (11.6 m)
Deck Area371.2 sq m
Main Spans3
Year Built1972

Traffic

Avg Daily Traffic2,300 (2018)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number71511

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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