Carlton County, MN

144 public highway bridges

Carlton County Bridge Snapshot

Carlton County, Minnesota contains 144 public highway bridges in the FHWA National Bridge Inventory. Roughly 45.8% are rated “Good,” 31.9% “Fair,” 7.6% “Poor,” and 7.6% 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.

144
Total Bridges
45.8%
Good
7.6%
Poor
7.6%
Structurally Deficient

Condition Distribution

Good
45.8% (66)
Fair
31.9% (46)
Poor
7.6% (11)
SD
7.6% (11)

All Bridges (144)

T 287

Good

Over: MOOSE HORN RIVER

0.43 MI SW OF CSAH61, Carlton, MN

Built 1978 Load: 35.9 t ADT: 31

MN 23

Good

Over: BNSF RR

15.9 MI NE OF S CO LINE, Carlton, MN

Built 2015 Load: 36.9 t ADT: 1,650

MN 73

Good

Over: KETTLE RIVER

5.0 MI NW OF W JCT TH 27, Carlton, MN

Built 1976 Load: 37.2 t ADT: 1,700

CR 103

Good

Over: SKUNK CREEK

1.5 MI S OF JCT CSAH 6, Carlton, MN

Built 2013 Load: 37.6 t ADT: 63

T 542

Good

Over: LITTLE OTTER CREEK

0.25 MI W JCT CSAH 61, Carlton, MN

Built 2006 Load: 39.0 t ADT: 10

CSAH 22

Good

Over: W BR KETTLE RIVER

0.2 MI S OF JCT CR 129, Carlton, MN

Built 1999 Load: 39.2 t ADT: 95

T 43

Good

Over: MOOSE HORN RIVER

0.1 MI W OF JCT CR 141, Carlton, MN

Built 2003 Load: 39.2 t ADT: 40

T 228

Good

Over: GILLESPIE BROOK

0.9 MI N JCT MN 73, Carlton, MN

Built 2008 Load: 39.2 t ADT: 10

CR 123

Good

Over: KETTLE RIVER

AT JCT CSAH 21, Carlton, MN

Built 2010 Load: 39.2 t ADT: 52

CSAH 6

Good

Over: DEAD MOOSE RIVER

0.9 MI W OF JCT CSAH 22, Carlton, MN

Built 2010 Load: 39.2 t ADT: 45

UT 1105

Good

Over: N FK NEMADJI RIVER

1.7 MI N OF JCT CSAH 8, Carlton, MN

Built 2011 Load: 39.5 t ADT: 45

MN 210

Good

Over: ST LOUIS RIVER

0.9 MI E OF JCT TH 45, Carlton, MN

Built 2012 Load: 39.9 t ADT: 1,641

CSAH 61

Good

Over: MOOSE HORN RIVER

IN BARNUM, Carlton, MN

Built 2000 Load: 40.2 t ADT: 1,501

CSAH 8

Good

Over: STATE LINE CREEK

0.3 MI W OF STATE LINE, Carlton, MN

Built 2020 Load: 40.2 t ADT: 142

T 37

Good

Over: DEAD MOOSE RIVER

0.3 MI W OF JCT TH 73, Carlton, MN

Built 2010 Load: 40.8 t ADT: 49

CR 131

Good

Over: KETTLE RIVER

0.2 MI N OF JCT CR 133, Carlton, MN

Built 1935 Load: 40.8 t ADT: 51

CSAH 11

Good

Over: NEMADJI CREEK

0.8 MI N OF JCT CSAH 8, Carlton, MN

Built 2019 Load: 41.1 t ADT: 166

MN 23

Good

Over: N FK NEMADJI RIVER

9.0 MI NE OF S CO LINE, Carlton, MN

Built 2015 Load: 41.5 t ADT: 757

MN 23

Good

Over: S FK NEMADJI RIVER

7.0 MI NE OF S CO LINE, Carlton, MN

Built 2020 Load: 41.8 t ADT: 757

T 370

Good

Over: MIDWAY RIVER

1.7 MI S OF JCT CSAH 61, Carlton, MN

Built 1985 Load: 43.4 t ADT: 38

CR 144

Good

Over: MOOSE HORN RIVER

0.4 MI N OF JCT CSAH 61, Carlton, MN

Built 2004 Load: 43.7 t ADT: 216

UT 112

Good

Over: JUD DITCH # 2

2.4 MI SW OF JCT TH 210, Carlton, MN

Built 2004 Load: 43.7 t ADT: 10

T 126

Good

Over: TAMARACK RIVER

0.3 MI W OF JCT CSAH 20, Carlton, MN

Built 2023 Load: 43.7 t ADT: 15

MN 210

Good

Over: EMERGENCY OVERFLOW

3.6 MI E OF JCT TH 45, Carlton, MN

Built 2013 Load: 44.4 t ADT: 710

T 1333

Good

Over: LITTLE NET RIVER

1.4 MI E OF JCT CR 145, Carlton, MN

Built 2021 Load: 46.7 t ADT: 25

MSAS 105

Good

Over: S CHAN ST LOUIS RIVER

0.1 MI S OF JCT TH 33, Carlton, MN

Built 1995 Load: 48.2 t ADT: 930

CSAH 8

Good

Over: NET RIVER

IN HOLYOKE, Carlton, MN

Built 2007 Load: 48.3 t ADT: 305

MN 27

Good

Over: KETTLE RIVER

5.4 MI W OF E JCT TH 73, Carlton, MN

Built 2004 Load: 49.0 t ADT: 625

CSAH 61

Good

Over: ST LOUIS RIVER

0.5 MI NE OF TH 35, Carlton, MN

Built 1987 Load: 51.0 t ADT: 4,973

CSAH 1

Good

Over: MIDWAY RIVER

0.3 MI N OF JCT CSAH 61, Carlton, MN

Built 2020 Load: 53.1 t ADT: 2,050

CSAH 6

Good

Over: MOOSE HORN RIVER

0.1 MI E OF JCT CSAH 61, Carlton, MN

Built 2023 Load: 53.5 t ADT: 2,800

MN 23

Good

Over: DEER CREEK

9.5 MI NE OF SO CNTY LINE, Carlton, MN

Built 2020 Load: 58.6 t ADT: 757

CSAH 26

Good

Over: OTTER CREEK

1.2 MI W OF JCT CSAH 3, Carlton, MN

Built 1976 Load: 64.8 t ADT: 1,520

UT 388

Poor

Over: HASTY BROOK

0.7 MI NE OF JCT TH 73, Carlton, MN

Built 1935 Load: 15.7 t ADT: 1

CSAH 4

Poor

Over: KETTLE RIVER

0.4 MI E OF JCT CSAH 21, Carlton, MN

Built 1935 Load: 16.7 t ADT: 278

UT 1103

Poor

Over: DITCH

1.2 MI S OF JCT TH 210, Carlton, MN

Built 1983 Load: 24.7 t ADT: 3

M 1

Poor

Over: TAMARACK RIVER

IN WRIGHT, Carlton, MN

Built 1940 Load: 25.1 t ADT: 180

CSAH 13

Poor

Over: PORTAGE RIVER

0.2 MI S OF JCT CSAH 8, Carlton, MN

Built 1974 Load: 25.9 t ADT: 128

CSAH 12

Poor

Over: KETTLE RIVER

0.4 MI W OF JCT TH 73, Carlton, MN

Built 1964 Load: 26.1 t ADT: 300

CSAH 6

Poor

Over: BLACKHOOF CREEK

3.5 MI E;N OF JCT CSAH 5, Carlton, MN

Built 1918 Load: 26.1 t ADT: 420

CR 138

Poor

Over: MOOSE HORN RIVER

1.6 MI N OF JCT CSAH 8, Carlton, MN

Built 1978 Load: 31.7 t ADT: 164

I 35

Poor

Over: MOOSE HORN RIVER

3.5 MI N OF JCT TH 27, Carlton, MN

Built 1968 Load: 34.6 t ADT: 8,200

I 35

Poor

Over: MOOSE HORN RIVER

3.5 MI N OF JCT TH 27, Carlton, MN

Built 1968 Load: 34.6 t ADT: 8,200

CSAH 1

Poor

Over: MP; L CANAL

0.6 MI E OF JCT TH 210, Carlton, MN

Built 1976 Load: 37.2 t ADT: 1,006

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