St. Louis County, MN

641 public highway bridges

St. Louis County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Louis County, Minnesota contains 641 public highway bridges. Roughly 48.2% are rated “Good,” 34.2% “Fair,” and 5% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

641

Total Bridges

48.2%

Good

34.2%

Fair

5%

Poor Condition

Condition Distribution

Good

48.2% (309)

Fair

34.2% (219)

Poor

5% (32)

All Bridges (641)

Sort:

CSAH 14

Over: I 35

2.1 MI SW OF W JCT TH 2, St. Louis, MN

Built 1966 ADT: 28,000

RAILROAD

Over: I 35 SB

AT JCT TH 2, St. Louis, MN

Built 1965 ADT: 40,000

RAILROAD

Over: US 2 EB

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

Built 1965 ADT: 5,200

I 35

Over: I 35 NB OFF RAMP

1.0 MI N OF W JCT TH 2, St. Louis, MN

Built 1965 ADT: 3,000

I 35

Over: US 2 EB

AT JCT I 35; US 2 EB, St. Louis, MN

Built 2009 ADT: 5,200

MSAS 135

Over: I 35, ACCES;RR STS; RR

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

Built 1966 ADT: 34,500

I 35

Over: CP RAIL, RAMPS; STRS

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

Built 1969 ADT: 1,550

I 35

Over: CP RAIL; STREETS

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

Built 1969 ADT: 9,500

CON 3537

Over: 58TH AVE W; 59TH AVE W

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

Built 1969 ADT: 500

CON 3381

Over: 57TH AVE W

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

Built 1969 ADT: 750

CON 723

Over: 57TH AVE W

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

Built 1969 ADT: 750

PEDESTRIAN

Over: I 35; TWO RAMPS

0.4 MI NE OF GARFIELD AV, St. Louis, MN

Built 1968 ADT: 9,000

RAILROAD

Over: I 35, N ; S FRONTAGE RDS

5.2 MI SW OF W JCT TH 2, St. Louis, MN

Built 1975 ADT: 960

I 35

Over: CSAH 61 AT COUNTY LINE

5.6 MI SW OF W JCT TH 2, St. Louis, MN

Built 1974 ADT: 2,800

I 35

Over: CSAH 61 AT COUNTY LINE

5.6 MI SW OF W JCT TH 2, St. Louis, MN

Built 1974 ADT: 2,800

I 35

Over: MIDWAY RD(CSAH 13)

4.4 MI SW OF W JCT TH 2, St. Louis, MN

Built 1976 ADT: 3,550

I 35

Over: MIDWAY RD(CSAH 13)

4.4 MI SW OF W JCT TH 2, St. Louis, MN

Built 1975 ADT: 3,550

MSAS 115

Over: I 35

0.5 MI S OF JCT I 535, St. Louis, MN

Built 2021 ADT: 44,000

RAILROAD

Over: US 2

5.2 MI S OF JCT TH 194, St. Louis, MN

Built 1958 ADT: 3,250

UTILITIES

Over: US 169

0.8 MI E OF W CO LINE, St. Louis, MN

Built 1973 ADT: 9,300

SKYWAY

Over: MSAS 171 (SUPERIOR ST)

E OF 1ST AVE W, St. Louis, MN

Built 1980 ADT: 7,136

SKYWAY

Over: MSAS 171 (SUPERIOR ST)

E OF 4TH AVE W, St. Louis, MN

Built 1985 ADT: 7,136

SKYWAY

Over: MSAS 171(SUPERIOR ST)

WEST OF 1ST AVE W, St. Louis, MN

Built 1986 ADT: 7,337

US 53

Over: TH 37

AT THE JCT TH 53; 37, St. Louis, MN

Built 1961 ADT: 3,800

MSAS 203

Over: MILLER CREEK; STREET

0.1 MI S OF JCT TH53, St. Louis, MN

Built 1927 ADT: 175

SKYWAY

Over: MSAS 171 (SUPERIOR ST)

EAST OF 3RD AVE W, St. Louis, MN

Built 1978 ADT: 7,337

SKYWAY

Over: E 1ST ST ALLEY

150 FT NW JCT SUPERIOR ST, St. Louis, MN

Built 2004 ADT: 1

SKYWAY

Over: 10TH AVE E

0.1 MI NW JCT SUPERIOR ST, St. Louis, MN

Built 2015 ADT: 4,800

SKYWAY

Over: N 4TH AVE E

120 FT SE OF JCT E 1ST ST, St. Louis, MN

Built 2023 ADT: 1

BUILDING

Over: E 1ST STREET

360FT NE OF JCT 4TH AVE E, St. Louis, MN

Built 2023 ADT: 3,800

BUILDING

Over: 1ST ST ALLEY

125FT NE OF JCT 4TH AVE E, St. Louis, MN

Built 2023 ADT: 1

M 330

Over: W SWAN RIVER

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

Built 1921 Load: 3.3 t ADT: 52

M 846

Over: TISCHERS CREEK

0.1 MI W OF JCT CSAH 9, St. Louis, MN

Built 1973 Load: 11.4 t ADT: 15

T 1419

Over: ELBOW RIVER

0.6 MI N OF JCT CR 905, St. Louis, MN

Built 1987 Load: 13.4 t ADT: 50

CR 848

Over: JOE MARTIN BROOK

1.4 MI S OF JCT TH 2, St. Louis, MN

Built 1998 Load: 14.3 t ADT: 125

CSAH 10

Over: LESTER RIVER

0.4 MI W OF JCT CSAH12, St. Louis, MN

Built 1948 Load: 16.3 t ADT: 730

CR 207

Over: STONE RIVER

1.1 MI S OF JCT CSAH28, St. Louis, MN

Built 1969 Load: 17.2 t ADT: 10

UT 9223

Over: MUD HEN CREEK

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

Built 1988 Load: 17.3 t ADT: 5

MSAS 140

Over: SHIP CANAL

0.6 MI SE OF SUPERIOR ST, St. Louis, MN

Built 1905 Load: 18.8 t ADT: 6,143

MN 23

Over: MISSION CREEK

0.3 MI E OF JCT TH 210, St. Louis, MN

Built 1937 Load: 19.6 t ADT: 2,000

UNDETERMINED RD

Over: MUD CREEK

2.2 MI N OF JCT CR 408, St. Louis, MN

Built 1985 Load: 20.4 t ADT: 1

CR 688

Over: DARK RIVER

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

Built 2001 Load: 20.6 t ADT: 5

CR 245

Over: STREAM

0.5 MI N OF JCT CR 259, St. Louis, MN

Built 1982 Load: 21.5 t ADT: 60

CSAH 4

Over: ISLAND LAKE

0.6 MI S OF JCT CR269, St. Louis, MN

Built 1949 Load: 22.9 t ADT: 2,907

T 5

Over: PALEFACE RIVER

0.3 MI W OF JCT CSAH 59, St. Louis, MN

Built 1987 Load: 22.9 t ADT: 4

CR 344

Over: WATER HEN CREEK

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

Built 1980 Load: 22.9 t ADT: 5

T 1403

Over: RICE RIVER

0.5 MI N OF JCT CSAH 87, St. Louis, MN

Built 1978 Load: 23.0 t ADT: 8

CSAH 4

Over: WHITEFACE RIVER

1.6 MI S OF JCT CR333, St. Louis, MN

Built 1965 Load: 23.3 t ADT: 760

CSAH 133

Over: ST LOUIS RIVER

0.5 MI W OF JCT CR226, St. Louis, MN

Built 1976 Load: 23.9 t ADT: 230

CSAH 40

Over: SUCKER RIVER

0.1 MI W OF JCT CR693, St. Louis, MN

Built 1959 Load: 23.9 t ADT: 145

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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Compiled by PlainBridges, Independent data publisher

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.