St. Louis County, MN

641 public highway bridges

St. Louis County Bridge Snapshot

St. Louis County, Minnesota contains 641 public highway bridges in the FHWA National Bridge Inventory. Roughly 48.2% are rated “Good,” 34.2% “Fair,” 5% “Poor,” and 5% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MN are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

641
Total Bridges
48.2%
Good
5%
Poor
5%
Structurally Deficient

Condition Distribution

Good
48.2% (309)
Fair
34.2% (219)
Poor
5% (32)
SD
5% (32)

All Bridges (641)

UT 8146

Good

Over: ASH RIVER

0.3 MI S OF JCT TH 53, St. Louis, MN

Built 2018 Load: 41.5 t ADT: 109

CR 180

Good

Over: BLACK DUCK CREEK

13.1 MI N OF JCT TH 53, St. Louis, MN

Built 2018 Load: 41.5 t ADT: 195

MN 1

Good

Over: Rice River

0.5 MI E OF JCT TH 53, St. Louis, MN

Built 2000 Load: 42.1 t ADT: 540

CR 936

Good

Over: RICE RIVER

0.5 MI W OF JCT TH53, St. Louis, MN

Built 2016 Load: 42.1 t ADT: 5

CR 422

Good

Over: TWO MILE CREEK

0.3 MI S OF JCT CSAH 24, St. Louis, MN

Built 2016 Load: 42.1 t ADT: 125

CSAH 21

Good

Over: BIRCH RIVER

1.1 MI N OF JCT CSAH70, St. Louis, MN

Built 2016 Load: 42.1 t ADT: 1,500

CR 293

Good

Over: LESTER RIVER

1.3 MI N OF JCT CSAH 10, St. Louis, MN

Built 2019 Load: 42.1 t ADT: 510

MN 73

Good

Over: FLOODWOOD RIVER

0.3 MI N OF N JCT TH 2, St. Louis, MN

Built 1979 Load: 42.4 t ADT: 1,401

US 53

Good

Over: RICE RIVER

6.0 MI S OF COOK, St. Louis, MN

Built 1992 Load: 42.4 t ADT: 1,846

MSAS 219

Good

Over: SILVER CREEK

0.04 MI S OF JCT 1ST ST, St. Louis, MN

Built 2003 Load: 42.4 t ADT: 6,300

CSAH 7

Good

Over: CLOQUET RIVER

1.6 MI W OF JCT TH33, St. Louis, MN

Built 2012 Load: 42.4 t ADT: 810

CSAH 77

Good

Over: PIKE RIVER

0.5 MI N OF JCT TH 1, St. Louis, MN

Built 1992 Load: 42.8 t ADT: 3,400

T 301

Good

Over: STREAM

0.3 MI SE OF JCT CR 611, St. Louis, MN

Built 2000 Load: 42.8 t ADT: 27

CSAH 52

Good

Over: WHITEFACE RIVER

0.1 MI W OF JCT CSAH 15, St. Louis, MN

Built 2019 Load: 42.8 t ADT: 380

US 53

Good

Over: JOHNSON CREEK

0.9 MI N OF CSAH 65, St. Louis, MN

Built 2007 Load: 42.9 t ADT: 1,846

CR 312

Good

Over: ST LOUIS RIVER

0.6 MI N OF JCT CSAH 27, St. Louis, MN

Built 2001 Load: 43.1 t ADT: 50

T 514

Good

Over: Breda Creek

1.0 MI E OF JCT CR 353, St. Louis, MN

Built 2000 Load: 43.1 t ADT: 27

MSAS 113

Good

Over: KEENE CREEK

0.3 MI N OF JCT CSAH 89, St. Louis, MN

Built 2001 Load: 43.1 t ADT: 620

CR 600

Good

Over: LITTLE FORK RIVER

0.8 MI S OF JCT CSAH 115, St. Louis, MN

Built 2022 Load: 43.1 t ADT: 5

CR 750

Good

Over: SWAN RIVER

0.5 MI E OF JCT CSAH 5, St. Louis, MN

Built 2004 Load: 43.4 t ADT: 35

CR 442

Good

Over: EAST SWAN RIVER

0.8 MI E OF JCT CR 965, St. Louis, MN

Built 2016 Load: 43.4 t ADT: 30

US 53

Good

Over: JOHNSON CREEK

0.9 MI N OF CSAH 65, St. Louis, MN

Built 2007 Load: 43.7 t ADT: 1,846

CSAH 52

Good

Over: DITCH

0.2 MI W OF JCT CSAH 7, St. Louis, MN

Built 2017 Load: 43.7 t ADT: 90

CSAH 65

Good

Over: STURGEON RIVER

1.4 MI W OF JCT MN 73, St. Louis, MN

Built 2022 Load: 44.4 t ADT: 60

CR 258

Good

Over: SUCKER RIVER

0.3 MI S OF JCT CSAH 43, St. Louis, MN

Built 2009 Load: 44.7 t ADT: 490

CR 980

Good

Over: JENKINS CREEK

1.3 MI E OF JCT CSAH 7, St. Louis, MN

Built 2022 Load: 44.7 t ADT: 50

CSAH 116

Good

Over: MOOSE RIVER

1.2 MI W OF JCT CR 670, St. Louis, MN

Built 2015 Load: 45.0 t ADT: 325

CSAH 7

Good

Over: ST LOUIS RIVER

0.6 MI S OF JCT CSAH 16, St. Louis, MN

Built 1996 Load: 45.1 t ADT: 900

CSAH 114

Good

Over: LITTLE FORK RIVER

1.0 MI E OF JCT CSAH 5, St. Louis, MN

Built 2000 Load: 45.1 t ADT: 75

CR 965

Good

Over: WEST SWAN RIVER

0.5 MI N OF JCT CR927, St. Louis, MN

Built 2016 Load: 45.4 t ADT: 20

CR 180

Good

Over: BOG CREEK

5.5 MI NE OF JCT TH 53, St. Louis, MN

Built 2016 Load: 46.0 t ADT: 195

I 35

Good

Over: MILLER & COFFEE CREEK

0.1 MI S OF JCT US 53, St. Louis, MN

Built 2022 Load: 46.0 t ADT: 46,000

MN 23

Good

Over: KNOWLTON CREEK

1.9 MI S OF JCT TH 35 NB, St. Louis, MN

Built 2016 Load: 46.3 t ADT: 10,280

CR 185

Good

Over: SAND RIVER

0.9 MI N OF JCT CR 817, St. Louis, MN

Built 2016 Load: 46.3 t ADT: 5

PVT 487

Good

Over: CN RAILROAD

IN GILBERT, St. Louis, MN

Built 2000 Load: 47.0 t ADT: 20

CSAH 37

Good

Over: LESTER RIVER

0.6 MI S JCT CSAH 43, St. Louis, MN

Built 2012 Load: 47.3 t ADT: 3,750

NFD 1902

Good

Over: SHANNON RIVER

1.1 MI NW OF CR 766 (230, St. Louis, MN

Built 1994 Load: 48.3 t ADT: 10

CR 453

Good

Over: STREAM

0.2 MI S OF JCT CR 592, St. Louis, MN

Built 2011 Load: 48.3 t ADT: 80

CSAH 65

Good

Over: DARK RIVER

1.2 MI W OF JCT CSAH 25, St. Louis, MN

Built 2019 Load: 49.9 t ADT: 42

M 10

Good

Over: LITTLE FORK RIVER

0.1 MI N OF JCT CSAH 25, St. Louis, MN

Built 2018 Load: 50.2 t ADT: 700

T 5726

Good

Over: STREAM

0.3 MI E OF JCT CSAH 123, St. Louis, MN

Built 2017 Load: 50.2 t ADT: 169

SERVICE RD

Good

Over: STREAM

1.21 MI SE OF JCT TH 169, St. Louis, MN

Built 2019 Load: 50.2 t ADT: 5

CSAH 21

Good

Over: BEAR ISLAND RIVER

0.1 MI N OF JCT CSAH 120, St. Louis, MN

Built 2021 Load: 50.5 t ADT: 1,500

CON 1248

Good

Over: CP RAIL

AT THE E JCT TH 35, St. Louis, MN

Built 1983 Load: 50.6 t ADT: 2,000

CSAH 59

Good

Over: PALEFACE RIVER

0.7 MI W OF JCT CR 322, St. Louis, MN

Built 2017 Load: 50.9 t ADT: 100

CSAH 65

Good

Over: STURGEON RIVER

0.1 MI S OF JCT CR 753, St. Louis, MN

Built 1995 Load: 51.2 t ADT: 620

MN 23

Good

Over: KINGSBURY CREEK

1.1 MI S OF JCT TH 35 NB, St. Louis, MN

Built 2015 Load: 51.8 t ADT: 13,900

CSAH 44

Good

Over: INDIAN CREEK

0.1 M S JCT INDIAN CRK RD, St. Louis, MN

Built 2013 Load: 52.2 t ADT: 375

CR 615

Good

Over: EMBARRASS RIVER

0.6 MI E OF JCT CSAH 21, St. Louis, MN

Built 2013 Load: 52.8 t ADT: 265

CR 652

Good

Over: STURGEON RIVER

0.5 MI E OF JCT TH 73, St. Louis, MN

Built 2005 Load: 52.9 t ADT: 25

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial