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)

CSAH 61

Good

Over: FRENCH RIVER

0.1 MI E OF JCT CSAH 50, St. Louis, MN

Built 2020 Load: 39.9 t ADT: 1,300

CSAH 133

Good

Over: WHITEFACE RIVER

0.6 MI W OF JCT CSAH 47, St. Louis, MN

Built 2023 Load: 39.9 t ADT: 750

CSAH 29

Good

Over: ST LOUIS RIVER

0.1 MI E OF JCT CR 149, St. Louis, MN

Built 2000 Load: 40.2 t ADT: 195

CSAH 75

Good

Over: WILLOW RIVER

0.7 MI S OF JCT CSAH 74, St. Louis, MN

Built 2012 Load: 40.2 t ADT: 95

CR 431

Good

Over: LITTLE FORK RIVER

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

Built 2016 Load: 40.2 t ADT: 5

CR 597

Good

Over: RICE RIVER

0.3 MI N OF JCT CR 936, St. Louis, MN

Built 2016 Load: 40.2 t ADT: 5

CR 779

Good

Over: RICE RIVER

0.1 MI W OF JCT CR 597, St. Louis, MN

Built 2017 Load: 40.2 t ADT: 6

CSAH 65

Good

Over: OUTLET TO STURGEON RIVER

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

Built 2021 Load: 40.2 t ADT: 591

CSAH 44

Good

Over: LITTLE CLOQUET RIVER

3.8 MI W OF JCT CR 256, St. Louis, MN

Built 2019 Load: 40.5 t ADT: 364

NFD 268

Good

Over: PELICAN RIVER

5.2 MI NE OF TH 53 (240, St. Louis, MN

Built 2018 Load: 40.5 t ADT: 1

CR 666

Good

Over: PARTRIDGE RIVER

1.3 MI NE OF JCT CSAH 11, St. Louis, MN

Built 2023 Load: 40.5 t ADT: 212

CSAH 12

Good

Over: LESTER RIVER

0.1 MI E OF 60TH AVE E, St. Louis, MN

Built 1973 Load: 40.8 t ADT: 5,600

CR 464

Good

Over: DAY BROOK

0.3 MI E OF JCT CR 710, St. Louis, MN

Built 1994 Load: 40.8 t ADT: 360

CR 303

Good

Over: SAND RIVER

1.4 MI N OF JCT TH 169, St. Louis, MN

Built 1998 Load: 40.8 t ADT: 220

CSAH 42

Good

Over: Knife River

0.3 mi N of jct CSAH 3, St. Louis, MN

Built 2002 Load: 40.8 t ADT: 690

M 712

Good

Over: Amity Creek

0.8 MI N OF JCT CSAH 12, St. Louis, MN

Built 2002 Load: 40.8 t ADT: 100

M 712

Good

Over: AMITY CREEK

1.3 MI N OF JCT CSAH 12, St. Louis, MN

Built 2004 Load: 40.8 t ADT: 130

M 1040

Good

Over: AMITY CREEK

0.4 MI N OF JCT CSAH 12, St. Louis, MN

Built 2006 Load: 40.8 t ADT: 114

MSAS 176

Good

Over: AMITY CREEK

0.4 MI S OF JCT CR 241, St. Louis, MN

Built 2006 Load: 40.8 t ADT: 348

LOC 2

Good

Over: W BRANCH CLOQUET RIVER

0.6 M S OF JCT CR 547, St. Louis, MN

Built 2013 Load: 40.8 t ADT: 5

CSAH 22

Good

Over: STURGEON RIVER

1.0 MI W OF JCT TH 73, St. Louis, MN

Built 2015 Load: 40.8 t ADT: 480

CR 21

Good

Over: WEST ROCKY RUN

0.7 MI W OF JCT CSAH13, St. Louis, MN

Built 2015 Load: 40.8 t ADT: 185

CR 796

Good

Over: EMBARRASS RIVER

0.3 MI S OF JCT CSAH 21, St. Louis, MN

Built 2017 Load: 40.8 t ADT: 5

CR 186

Good

Over: EAST SAVANNA RIVER

0.1 MI S OF JCT CR 834, St. Louis, MN

Built 2021 Load: 40.8 t ADT: 205

CR 322

Good

Over: PALEFACE RIVER

0.8 MI N OF JCT CSAH 59, St. Louis, MN

Built 1998 Load: 40.8 t ADT: 45

T 3021

Good

Over: INDIAN CREEK

0.1 MI E OF JCT CSAH 44, St. Louis, MN

Built 1998 Load: 40.8 t ADT: 12

CSAH 36

Good

Over: Amity Creek

0.1 mi N of jct CSAH 9, St. Louis, MN

Built 2001 Load: 40.8 t ADT: 1,231

CSAH 44

Good

Over: PINE CREEK

1.2 MI W OF JCT CR 611, St. Louis, MN

Built 2000 Load: 40.8 t ADT: 220

T 1007

Good

Over: Sand Creek

0.5 mi N of jct CR 817, St. Louis, MN

Built 2001 Load: 40.8 t ADT: 12

CSAH 19

Good

Over: Midway River

0.1 mi E of jct CSAH 13, St. Louis, MN

Built 2002 Load: 40.8 t ADT: 484

CSAH 16

Good

Over: STREAM

0.4 MI E OF JCT CSAH 57, St. Louis, MN

Built 2005 Load: 40.8 t ADT: 996

M 342

Good

Over: DEMPSEY CREEK

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

Built 2010 Load: 40.8 t ADT: 140

CSAH 42

Good

Over: LITTLE KNIFE RIVER

0.3 MI N OF JCT CSAH40, St. Louis, MN

Built 2008 Load: 40.8 t ADT: 690

CSAH 7

Good

Over: LITTLE WHITEFACE RIVER

0.9 MI N OF JCT CSAH 133, St. Louis, MN

Built 2009 Load: 40.8 t ADT: 295

T 5088

Good

Over: SAND CREEK

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

Built 2010 Load: 40.8 t ADT: 15

US 53

Good

Over: SANDY RIVER

3.31 MI N OF N JCT US 169, St. Louis, MN

Built 2007 Load: 40.8 t ADT: 4,100

CSAH 37

Good

Over: AMITY CREEK

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

Built 2004 Load: 40.8 t ADT: 5,800

CR 447

Good

Over: WEST TWO RIVER

0.5 MI N OF JCT CR 452, St. Louis, MN

Built 2011 Load: 41.1 t ADT: 255

CR 981

Good

Over: WHITEFACE RIVER

0.2 MI S OF JCT CSAH52, St. Louis, MN

Built 2013 Load: 41.1 t ADT: 90

CSAH 89

Good

Over: KEENE CREEK

1.2 MI S OF JCT TH63, St. Louis, MN

Built 2014 Load: 41.1 t ADT: 5,100

CR 266

Good

Over: SUCKER RIVER

3.2 MI E OF JCT CSAH 44, St. Louis, MN

Built 2018 Load: 41.1 t ADT: 60

CR 666

Good

Over: RAILROAD

5.8 MI N OF JCT CSAH 110, St. Louis, MN

Built 2023 Load: 41.1 t ADT: 212

CR 495

Good

Over: LITTLE FORK RIVER

0.9 MI W OF JCT CSAH 139, St. Louis, MN

Built 1996 Load: 41.2 t ADT: 20

US 53

Good

Over: MILLER CREEK

AT SKYLINE DRIVE, St. Louis, MN

Built 2003 Load: 41.3 t ADT: 23,600

CSAH 107

Good

Over: STURGEON RIVER

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

Built 1995 Load: 41.5 t ADT: 30

CR 694

Good

Over: CLOQUET RIVER

0.5 MI S OF JCT CSAH 7, St. Louis, MN

Built 1997 Load: 41.5 t ADT: 30

CSAH 19

Good

Over: DM;IR RY

0.2 MI W OF JCT TH 2, St. Louis, MN

Built 1996 Load: 41.5 t ADT: 484

CR 668

Good

Over: DARK RIVER

1.4 MI S OF JCT CR461, St. Louis, MN

Built 2016 Load: 41.5 t ADT: 22

CR 916

Good

Over: BEAR RIVER

0.3 MI N OF JCT CSAH 22, St. Louis, MN

Built 2016 Load: 41.5 t ADT: 62

CR 938

Good

Over: FLINT CREEK

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

Built 2017 Load: 41.5 t ADT: 50

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

Related

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