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)

MSAS 179

Good

Over: CHESTER CREEK

1.3 MI N OF JCT TH 194, St. Louis, MN

Built 1930 Load: 53.2 t ADT: 1,274

UT 3083

Good

Over: ASH RIVER

NORTH OF ORR, St. Louis, MN

Built 1990 Load: 56.2 t ADT: 2

CR 444

Good

Over: EAST SWAN RIVER

4.2 MI SE OF JCT CSAH 16, St. Louis, MN

Built 2021 Load: 58.3 t ADT: 260

SFR 293

Good

Over: CHICKEN CREEK

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

Built 2013 Load: 58.4 t ADT: 1

CSAH 9

Good

Over: TISCHERS CREEK

0.5 MI S OF JCT CSAH 37, St. Louis, MN

Built 2003 Load: 59.9 t ADT: 5,300

US 53

Good

Over: HELLWIG CREEK

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

Built 1966 Load: 70.4 t ADT: 5,150

US 53

Good

Over: PED CONCOURSE

1.0 MI N OF JCT TH 35, St. Louis, MN

Built 2003 Load: 76.6 t ADT: 22,900

CSAH 41

Good

Over: CAPTAIN JACOBSON CREEK

0.8 MI N OF JCT CSAH 42, St. Louis, MN

Built 2022 Load: 83.3 t ADT: 380

ELEPHANT LAKE ROAD

Good

Over: FLAP CREEK

8.5 MI E OF JCT CR 180, St. Louis, MN

Built 2000 Load: 97.2 t ADT: 50

M 330

Poor

Over: W SWAN RIVER

0.4 MI S OF JCT CR606, St. Louis, MN

Built 1921 Load: 3.3 t ADT: 24

UT 3086

Poor

Over: ASH RIVER

2.5 MI E OF JCT US 53, St. Louis, MN

Built 1980 Load: 6.5 t ADT: 1

M 340

Poor

Over: E SWAN RIVER

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

Built 1930 Load: 11.8 t ADT: 20

CR 931

Poor

Over: STURGEON RIVER

0.8 MI N OF JCT CSAH22, St. Louis, MN

Built 1919 Load: 12.0 t ADT: 5

M 921

Poor

Over: TISCHERS CREEK

0.2 MI W OF JCT CSAH9, St. Louis, MN

Built 1950 Load: 19.0 t ADT: 100

UNDETERMINED RD

Poor

Over: CREEK

IN BIWABIK, St. Louis, MN

Built 1921 Load: 19.6 t ADT: 1

CR 851

Poor

Over: STONEY BROOK RIVER

1.9 MI W OF JCT CSAH31, St. Louis, MN

Built 1941 Load: 20.9 t ADT: 200

CSAH 16

Poor

Over: EAST TWO RIVER

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

Built 1966 Load: 21.2 t ADT: 390

BUNDLE LAKE ROAD

Poor

Over: WHITEFACE RIVER

1.0 MI N OF JCT CSAH 16, St. Louis, MN

Built 1961 Load: 21.7 t ADT: 10

CR 958

Poor

Over: RICE RIVER

1.1 MI W OF JCT CR 914, St. Louis, MN

Built 1981 Load: 22.2 t ADT: 70

CSAH 25

Poor

Over: DARK RIVER

4.0 MI N OF JCT CSAH66, St. Louis, MN

Built 1940 Load: 22.9 t ADT: 365

CSAH 49

Poor

Over: US-KAB-WAN-KA RIVER

2.8 MI E OF JCT CSAH 15, St. Louis, MN

Built 1983 Load: 24.5 t ADT: 40

M 61

Poor

Over: ROCKY RUN

0.6 MI E OF JCT CSAH 13, St. Louis, MN

Built 1933 Load: 25.5 t ADT: 250

M 846

Poor

Over: TISCHERS CREEK

0.2 MI W OF JCT CSAH9, St. Louis, MN

Built 1965 Load: 26.1 t ADT: 220

CSAH 14

Poor

Over: DM;IR RY

0.2 MI S OF JCT TH 35, St. Louis, MN

Built 1966 Load: 29.8 t ADT: 4,150

T 3020

Poor

Over: BREDA CREEK

1.4 MI S OF JCT CR 353, St. Louis, MN

Built 1969 Load: 29.8 t ADT: 4

CSAH 78

Poor

Over: LITTLE FORK RIVER

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

Built 1984 Load: 30.7 t ADT: 90

CSAH 24

Poor

Over: EIGHT MILE CREEK

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

Built 1977 Load: 31.0 t ADT: 85

CSAH 74

Poor

Over: STREAM

0.3 MI E OF JCT CR356, St. Louis, MN

Built 1966 Load: 31.8 t ADT: 195

CR 420

Poor

Over: LITTLE FORK RIVER

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

Built 1982 Load: 32.3 t ADT: 5

CSAH 87

Poor

Over: RICE RIVER

0.3 MI W OF JCT CR 512, St. Louis, MN

Built 1985 Load: 32.7 t ADT: 200

US 169

Poor

Over: DM;IR RY

3.7 MI S OF N JCT TH 73, St. Louis, MN

Built 1961 Load: 33.9 t ADT: 14,200

CSAH 25

Poor

Over: RICE RIVER

0.6 MI S OF JCT CSAH 25, St. Louis, MN

Built 1988 Load: 34.9 t ADT: 365

CR 914

Poor

Over: LITTLE FORK RIVER

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

Built 1990 Load: 36.4 t ADT: 30

MN 135

Poor

Over: DM;IR RY

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

Built 1970 Load: 37.6 t ADT: 6,000

CR 923

Poor

Over: STURGEON RIVER

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

Built 1986 Load: 37.9 t ADT: 15

WHITEFACE RIVER RD

Poor

Over: N. BR. WHITEFACE RIVER

6.0 MI N OF INT CSAH 4, St. Louis, MN

Built 1967 Load: 41.1 t ADT: 30

US 169

Poor

Over: DM;IR RY (Abandon)

7.6 MI E OF N JCT TH 73, St. Louis, MN

Built 1979 Load: 41.2 t ADT: 4,600

M 340

Structurally Deficient

Over: STREAM

0.1 MI W OF JCT CR444, St. Louis, MN

Built 1968 Load: 6.8 t ADT: 20

M 85

Structurally Deficient

Over: MIDWAY RIVER

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

Built 1961 Load: 7.8 t ADT: 50

MN 135

Structurally Deficient

Over: DM&IR RY

9.5 MI E OF S JCT TH53, St. Louis, MN

Built 1971 Load: 35.1 t ADT: 3,830

US 53

Structurally Deficient

Over: PALEFACE RIVER

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

Built 1964 Load: 65.5 t ADT: 3,845

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