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)

T 8283

Fair

Over: CHAN LAKE VERMILLION

TO ISLE OF PINES ISLAND, St. Louis, MN

Built 1984 Load: 29.8 t ADT: 245

CR 444

Fair

Over: WEST SWAN RIVER

0.3 MI N OF JCT CR 926, St. Louis, MN

Built 1988 Load: 29.8 t ADT: 25

MN 194

Fair

Over: UNSTABLE MATERIAL

0.3 MI N OF GARFIELD AVE, St. Louis, MN

Built 1970 Load: 30.2 t ADT: 21,783

CSAH 52

Fair

Over: WHITEFACE RIVER

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

Built 1958 Load: 30.2 t ADT: 465

US 53

Fair

Over: DWP RY

4.2 MI NW OF JCT TH 194, St. Louis, MN

Built 1969 Load: 30.7 t ADT: 5,000

CR 362

Fair

Over: EMBARRASS RIVER

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

Built 1985 Load: 30.7 t ADT: 105

CR 958

Fair

Over: RICE RIVER

4.0 MI SW OF JCT TH 53, St. Louis, MN

Built 1983 Load: 30.7 t ADT: 70

MSAS 147

Fair

Over: TISCHERS CREEK

2.5 MI NE OF JCT TH 194, St. Louis, MN

Built 1973 Load: 31.4 t ADT: 6,163

CR 893

Fair

Over: MIDWAY RIVER

0.4 MI N OF JCT CR894, St. Louis, MN

Built 1960 Load: 31.4 t ADT: 40

CR 835

Fair

Over: FLOODWOOD RIVER

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

Built 1980 Load: 31.4 t ADT: 5

CR 732

Fair

Over: FLOODWOOD RIVER

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

Built 1985 Load: 32.0 t ADT: 75

CSAH 110

Fair

Over: ST LOUIS RIVER

0.6 MI S OF JCT CR569, St. Louis, MN

Built 1989 Load: 32.0 t ADT: 320

CSAH 116

Fair

Over: PORTAGE RIVER

0.3 MI E OF JCT CR670, St. Louis, MN

Built 1953 Load: 32.0 t ADT: 325

US 53

Fair

Over: WHITEFACE RIVER

16.5 MI S OF JCT TH 37, St. Louis, MN

Built 1964 Load: 32.2 t ADT: 3,845

MN 194

Fair

Over: UNSTABLE MATERIAL

0.3 MI N OF GARFIELD AVE, St. Louis, MN

Built 1970 Load: 32.2 t ADT: 7,500

CSAH 108

Fair

Over: ST LOUIS RIVER

1.8 MI SW OF JCT CSAH 4, St. Louis, MN

Built 1988 Load: 32.3 t ADT: 230

CSAH 108

Fair

Over: WATER HEN CREEK

5.2 MI W OF JCT CSAH 4, St. Louis, MN

Built 1985 Load: 32.3 t ADT: 225

CR 710

Fair

Over: DEER CREEK

2.4 MI N OF JCT CSAH39, St. Louis, MN

Built 2015 Load: 32.4 t ADT: 161

UT 9246

Fair

Over: COOLIDGE CREEK

6.0 MI SW OF JCT CSAH 4, St. Louis, MN

Built 2017 Load: 32.4 t ADT: 53

CSAH 43

Fair

Over: FRENCH RIVER

0.2 MI W OF JCT CR281, St. Louis, MN

Built 1970 Load: 32.4 t ADT: 1,250

CSAH 108

Fair

Over: STREAM

0.1 MI N OF JCT CR 334, St. Louis, MN

Built 1979 Load: 32.4 t ADT: 230

CSAH 24

Fair

Over: TEN MILE CREEK

3.5 MI S OF JCT CSAH 23, St. Louis, MN

Built 1981 Load: 32.4 t ADT: 85

CR 230

Fair

Over: STREAM

0.2 MI S OF JCT CSAH 52, St. Louis, MN

Built 1987 Load: 32.4 t ADT: 20

CR 542

Fair

Over: CO DITCH

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

Built 1978 Load: 32.4 t ADT: 5

CSAH 5

Fair

Over: DEMPSEY CREEK

1.0 MI N OF JCT MN 37, St. Louis, MN

Built 1960 Load: 32.4 t ADT: 1,350

M 344

Fair

Over: DEMPSEY CREEK

0.7 MI W OF JCT CSAH5, St. Louis, MN

Built 1943 Load: 32.4 t ADT: 4

SFR 293

Fair

Over: HELLWIG CREEK

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

Built 1990 Load: 32.4 t ADT: 1

MN 39

Fair

Over: ST LOUIS RIVER

0.9 MI E OF JCT TH 23, St. Louis, MN

Built 1910 Load: 32.7 t ADT: 3,474

US 53

Fair

Over: DWP RY

4.2 MI NW OF JCT TH 194, St. Louis, MN

Built 1969 Load: 32.7 t ADT: 5,000

CSAH 3

Fair

Over: DM;IR RY

1.8 MI W OF JCT TH 23, St. Louis, MN

Built 1982 Load: 32.7 t ADT: 3,140

MSAS 220

Fair

Over: SILVER CREEK

0.3 MI S OF JCT TH 135, St. Louis, MN

Built 1980 Load: 32.7 t ADT: 4,650

CSAH 5

Fair

Over: WHITEFACE RIVER

0.1 MI S OF JCT CSAH 29, St. Louis, MN

Built 1983 Load: 32.7 t ADT: 105

CR 373

Fair

Over: PIKE RIVER

0.7 MI N OF JCT CSAH 21, St. Louis, MN

Built 1998 Load: 32.7 t ADT: 5

MSAS 126

Fair

Over: MILLER CREEK

0.8 MI SW OF JCT TH 53, St. Louis, MN

Built 1925 Load: 32.7 t ADT: 7,020

CR 365

Fair

Over: PIKE RIVER

0.5 MI N OF JCT CSAH 21, St. Louis, MN

Built 1979 Load: 32.7 t ADT: 5

MSAS 133

Fair

Over: TISCHERS CREEK

0.3 MI N OF JCT CSAH9, St. Louis, MN

Built 1925 Load: 32.7 t ADT: 1,763

M 712

Fair

Over: AMITY CREEK

1.1 MI N OF JCT CSAH12, St. Louis, MN

Built 1912 Load: 32.7 t ADT: 77

M 712

Fair

Over: AMITY CREEK

1.4 MI N OF JCT CSAH12, St. Louis, MN

Built 1912 Load: 32.7 t ADT: 72

M 712

Fair

Over: AMITY CREEK

1.5 MI N OF JCT CSAH12, St. Louis, MN

Built 1912 Load: 32.7 t ADT: 130

M 712

Fair

Over: AMITY CREEK

1.6 MI N OF JCT CSAH12, St. Louis, MN

Built 1912 Load: 32.7 t ADT: 72

CON 3971

Fair

Over: FILL

3.5 MI SW OF JCT TH 535, St. Louis, MN

Built 1969 Load: 32.8 t ADT: 2,845

US 169

Fair

Over: DM;IR RY

2.9 MI W OF S JCT TH 53, St. Louis, MN

Built 1970 Load: 33.1 t ADT: 4,750

I 35

Fair

Over: UNSTABLE MATERIAL

0.3 MI N OF GARFIELD AVE, St. Louis, MN

Built 1970 Load: 33.1 t ADT: 45,454

US 169

Fair

Over: DM;IR RY

2.9 MI W OF S JCT TH 53, St. Louis, MN

Built 1970 Load: 33.3 t ADT: 4,750

CR 816

Fair

Over: PRAIRIE RIVER

1.1 MI W OF JCT CSAH51, St. Louis, MN

Built 1956 Load: 33.3 t ADT: 15

DEWEY LAKE ROAD

Fair

Over: STURGEON RIVER

3.9 MI N OF JCT CR 484, St. Louis, MN

Built 1963 Load: 33.4 t ADT: 15

US 53

Fair

Over: DWP RY

IN ORR, St. Louis, MN

Built 1985 Load: 33.5 t ADT: 2,200

CSAH 5

Fair

Over: SWAN RIVER

5.7 MI N OF JCT CSAH 52, St. Louis, MN

Built 1989 Load: 33.7 t ADT: 475

US 53

Fair

Over: CLOQUET RIVER

0.2 MI N OF JCT TH 33, St. Louis, MN

Built 1966 Load: 33.8 t ADT: 5,150

US 169

Fair

Over: DWP RY

0.1 MI W OF S JCT TH 53, St. Louis, MN

Built 1970 Load: 33.8 t ADT: 18,800

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