Rock County, MN

252 public highway bridges

Rock County Bridge Snapshot

Rock County, Minnesota contains 252 public highway bridges in the FHWA National Bridge Inventory. Roughly 82.5% are rated “Good,” 12.7% “Fair,” 1.6% “Poor,” and 1.6% 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.

252
Total Bridges
82.5%
Good
1.6%
Poor
1.6%
Structurally Deficient

Condition Distribution

Good
82.5% (208)
Fair
12.7% (32)
Poor
1.6% (4)
SD
1.6% (4)

All Bridges (252)

CSAH 15

Good

Over: ROCK RIVER

0.7 MI E OF JCT TH 75, Rock, MN

Built 1991 Load: 39.8 t ADT: 99

CSAH 2

Good

Over: Stream

0.8 mi N of jct CSAH 21, Rock, MN

Built 2001 Load: 40.8 t ADT: 769

CSAH 2

Good

Over: Stream

0.4 mi S of jct CSAH 21, Rock, MN

Built 2001 Load: 40.8 t ADT: 769

CSAH 2

Good

Over: Stream

0.8 MI S OF JCT CSAH 10, Rock, MN

Built 2001 Load: 40.8 t ADT: 769

T 23

Good

Over: Stream

1.1 mi W of jct CSAH 6, Rock, MN

Built 2001 Load: 40.8 t ADT: 31

T 135

Good

Over: Stream

0.2 mi E of jct CSAH 4, Rock, MN

Built 2001 Load: 40.8 t ADT: 18

T 23

Good

Over: Stream

0.1 Mmi W of jct CSAH 6, Rock, MN

Built 2001 Load: 40.8 t ADT: 46

T 20

Good

Over: ASH CREEK

1.8 MI W OF JCT TH 75, Rock, MN

Built 2006 Load: 40.8 t ADT: 40

T 403

Good

Over: ASH CREEK

0.4 MI N OF JCT CSAH 1, Rock, MN

Built 2006 Load: 40.8 t ADT: 43

T 55

Good

Over: STREAM

0.5 MI E OF JCT CSAH 19, Rock, MN

Built 2006 Load: 40.8 t ADT: 40

T 70

Good

Over: STREAM

0.8 MI E OF JCT CR 66, Rock, MN

Built 2006 Load: 40.8 t ADT: 49

CR 58

Good

Over: OVERFLOW TO THE ROCK R

0.8 MI E OF JCT TH 75, Rock, MN

Built 2006 Load: 40.8 t ADT: 55

CR 58

Good

Over: OVERFLOW TO THE ROCK R

1.1 MI E OF JCT TH 75, Rock, MN

Built 2006 Load: 40.8 t ADT: 55

MN 270

Good

Over: MUD CREEK

0.6 MI E OF HILLS, Rock, MN

Built 2010 Load: 40.8 t ADT: 1,125

T 142

Good

Over: Beaver CREEK

0.6 mi N of jct CSAH 4, Rock, MN

Built 2001 Load: 41.0 t ADT: 35

CSAH 16

Good

Over: ROCK RIVER

0.7 MI E OF JCT TH 75, Rock, MN

Built 2009 Load: 41.0 t ADT: 307

T 60

Good

Over: BEAVER CREEK

2.2 MI W OF JCT CSAH 11, Rock, MN

Built 1997 Load: 41.2 t ADT: 25

CR 51

Good

Over: SPLIT ROCK CREEK

2.9 MI N OF JCT CSAH 14, Rock, MN

Built 1996 Load: 41.3 t ADT: 43

T 1

Good

Over: KANARANZI CREEK

2.0 MI S OF JCT CSAH 1, Rock, MN

Built 2008 Load: 41.3 t ADT: 49

T 42

Good

Over: BEAVER CREEK

0.3 MI W OF JCT CSAH 4, Rock, MN

Built 2013 Load: 41.5 t ADT: 42

T 89

Good

Over: Elk Creek

0.7 mi S of jct CSAH 16, Rock, MN

Built 2001 Load: 42.1 t ADT: 17

T 33

Good

Over: TRIB ROCK RIVER

1.7 MI S OF JCT CSAH 16, Rock, MN

Built 2023 Load: 42.1 t ADT: 49

T 76

Good

Over: SPLIT ROCK CREEK

1.3 MI W OF JCT TH 23, Rock, MN

Built 2017 Load: 42.8 t ADT: 11

T 137

Good

Over: BEAVER CREEK

1.1 MI E OF JCT CSAH 6, Rock, MN

Built 2003 Load: 43.1 t ADT: 50

T 52

Good

Over: BEAVER CREEK

2.1 MI E OF JCT CSAH 6, Rock, MN

Built 2006 Load: 43.1 t ADT: 48

CR 55

Good

Over: MN SOUTHERN RR

0.1 MI S JCT CSAH 4, Rock, MN

Built 2012 Load: 43.1 t ADT: 81

CSAH 20

Good

Over: BEAVER CREEK

1.5 MI W OF JCT CSAH 11, Rock, MN

Built 2005 Load: 43.4 t ADT: 266

CSAH 17

Good

Over: BEAVER CREEK

1.0 MI S OF JCT TH 90, Rock, MN

Built 2017 Load: 43.7 t ADT: 825

T 52

Good

Over: STREAM

0.9 MI W OF JCT CSAH 6, Rock, MN

Built 2003 Load: 43.7 t ADT: 761

T 42

Good

Over: Spring Water Creek

0.7 mi W of jct CR 53, Rock, MN

Built 2002 Load: 44.4 t ADT: 38

T 31

Good

Over: ELK CREEK

0.9 MI N OF JCT CSAH 15, Rock, MN

Built 2018 Load: 44.4 t ADT: 49

CSAH 4

Good

Over: ELK CREEK

0.7 MI W OF JCT CSAH 3, Rock, MN

Built 1984 Load: 45.5 t ADT: 1,260

CSAH 15

Good

Over: KANARANZI CREEK

1.5 MI E OF JCT CSAH 3, Rock, MN

Built 2015 Load: 45.7 t ADT: 167

CSAH 11

Good

Over: LITTLE BEAVER CREEK

0.6 MI N OF JCT CSAH 5, Rock, MN

Built 2015 Load: 46.0 t ADT: 56

CSAH 4

Good

Over: Rock River Overflow

0.6 mi E of jct CSAH 18, Rock, MN

Built 2002 Load: 47.5 t ADT: 2,750

CSAH 8

Good

Over: ROCK RIVER

0.4 MI E OF JCT CSAH 19, Rock, MN

Built 2010 Load: 47.7 t ADT: 454

T 80

Good

Over: SPLIT ROCK CREEK

0.6 MI W OF JCT TH 23, Rock, MN

Built 1996 Load: 47.8 t ADT: 31

T 65

Good

Over: ROCK RIVER

0.7 MI W OF JCT CSAH 9, Rock, MN

Built 2003 Load: 48.6 t ADT: 56

T 81

Good

Over: ROCK RIVER

0.1 MI S OF N CO LINE, Rock, MN

Built 2000 Load: 49.2 t ADT: 71

T 39

Good

Over: BLOOD RUN

1.9 MI S OF JCT CSAH 13, Rock, MN

Built 2006 Load: 49.2 t ADT: 20

CSAH 17

Good

Over: BEAVER CREEK

0.3 MI W OF JCT CSAH 4, Rock, MN

Built 2004 Load: 50.0 t ADT: 205

CSAH 3

Good

Over: KANARANZI CREEK

2.0 MI S OF JCT CSAH 1, Rock, MN

Built 2000 Load: 50.2 t ADT: 325

CSAH 3

Good

Over: CHAMPEPADAN CREEK

0.3 MI N OF JCT CSAH 8, Rock, MN

Built 1999 Load: 51.1 t ADT: 420

CSAH 16

Good

Over: ELK CREEK

0.3 MI E OF JCT CR 55, Rock, MN

Built 2011 Load: 51.4 t ADT: 29

CR 51

Good

Over: TRIB TO SPLIT ROCK CREEK

1.1 MI N OF JCT CSAH 14, Rock, MN

Built 1996 Load: 52.1 t ADT: 43

T 86

Good

Over: CHAMPEPADAN CREEK

0.5 MI S OF JCT CSAH 8, Rock, MN

Built 1998 Load: 52.2 t ADT: 20

T 73

Good

Over: ROCK RIVER

0.6 MI W JCT CSAH 2, Rock, MN

Built 2008 Load: 55.1 t ADT: 67

T 2

Good

Over: KANARANZI CREEK

1.4 MI W OF JCT CSAH 3, Rock, MN

Built 2010 Load: 55.1 t ADT: 91

CSAH 19

Poor

Over: STREAM

0.1 MI S OF JCT CSAH 7, Rock, MN

Built 1960 Load: 13.7 t ADT: 103

CSAH 11

Poor

Over: LITTLE BEAVER CREEK

0.4 MI S OF JCT CSAH 8, Rock, MN

Built 1954 Load: 17.6 t ADT: 56

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