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)

Sort:

I 90

Over: CSAH 11

3.2 MI W OF JCT TH 75, Rock, MN

Built 1964 ADT: 405

I 90

Over: CSAH 11

3.2 MI W OF JCT TH 75, Rock, MN

Built 1964 ADT: 405

US 75

Over: I 90

AT JCT TH 75, Rock, MN

Built 1992 ADT: 10,180

I 90

Over: CSAH 9

2.0 MI E OF JCT TH 75, Rock, MN

Built 1965 ADT: 440

I 90

Over: CSAH 9

2.0 MI E OF JCT TH 75, Rock, MN

Built 1965 ADT: 440

CR 55

Over: I 90

4.0 MI E OF JCT TH 75, Rock, MN

Built 1965 ADT: 10,180

CSAH 3

Over: I 90

6.0 MI E OF JCT TH 75, Rock, MN

Built 1965 ADT: 10,180

T 8

Over: I 90

7.0 MI E OF JCT TH 75, Rock, MN

Built 1965 ADT: 12,000

CSAH 20

Over: STREAM

0.4 MI E OF JCT CR 66, Rock, MN

Built 1952 Load: 12.0 t ADT: 266

M 75

Over: STREAM

0.5 MI S OF JCT CSAH 4, Rock, MN

Built 1910 Load: 19.6 t ADT: 297

M 11

Over: SPRING BROOK

0.2 MI E OF JCT CSAH 25, Rock, MN

Built 1911 Load: 19.6 t ADT: 56

CSAH 6

Over: BEAVER CREEK

0.6 MI N OF JCT CSAH 4, Rock, MN

Built 1972 Load: 20.0 t ADT: 355

CSAH 1

Over: ROCK RIVER

0.3 MI W OF JCT CSAH 9, Rock, MN

Built 1968 Load: 22.7 t ADT: 466

CSAH 7

Over: SPLIT ROCK CREEK

2.1 MI W OF JCT TH 23, Rock, MN

Built 1973 Load: 23.2 t ADT: 105

CSAH 7

Over: ROCK RIVER

0.9 MI W OF JCT CSAH 2, Rock, MN

Built 1969 Load: 23.3 t ADT: 729

T 82

Over: SPLIT ROCK CREEK

0.6 MI W OF JCT TH 23, Rock, MN

Built 1978 Load: 24.7 t ADT: 50

CSAH 6

Over: SPRING BROOK

0.2 MI S OF JCT CSAH 4, Rock, MN

Built 1957 Load: 25.5 t ADT: 920

CSAH 19

Over: STREAM

1.2 MI N OF JCT CSAH 21, Rock, MN

Built 1938 Load: 26.0 t ADT: 49

MN 23

Over: SPLIT ROCK CREEK

IN JASPER, Rock, MN

Built 1995 Load: 26.1 t ADT: 1,725

CSAH 4

Over: STREAM

0.5 MI W OF JCT CR 52, Rock, MN

Built 1927 Load: 27.1 t ADT: 590

CSAH 7

Over: STREAM

0.4 MI E OF JCT CR 66, Rock, MN

Built 1959 Load: 27.4 t ADT: 240

CSAH 9

Over: STREAM

1.7 MI S OF JCT CSAH 1, Rock, MN

Built 1965 Load: 28.4 t ADT: 240

CSAH 5

Over: LITTLE BEAVER CREEK

0.4 MI W OF JCT CSAH 11, Rock, MN

Built 1971 Load: 28.8 t ADT: 556

US 75

Over: ASH CREEK

7.0 MI S OF LUVERNE, Rock, MN

Built 1927 Load: 29.4 t ADT: 1,802

MN 23

Over: STREAM

2.9 MI S OF JASPER, Rock, MN

Built 1953 Load: 29.4 t ADT: 1,725

I 90

Over: SPRING WATER CREEK

0.5 MI E OF S D ST LINE, Rock, MN

Built 1960 Load: 29.4 t ADT: 15,110

I 90

Over: BEAVER CREEK

3.2 MI E OF S.D. ST LINE, Rock, MN

Built 1960 Load: 29.4 t ADT: 11,300

I 90

Over: ELK CREEK

5.0 MI E OF JCT TH75, Rock, MN

Built 1964 Load: 29.4 t ADT: 10,180

I 90

Over: BEAVER CREEK

3.2 MI E OF S.D. ST LINE, Rock, MN

Built 1971 Load: 29.4 t ADT: 11,300

T 84

Over: CHAMPEPADAN CREEK

0.5 MI S OF JCT CSAH 8, Rock, MN

Built 1986 Load: 31.7 t ADT: 45

I 90

Over: ROCK RIVER

0.8 MI E OF JCT TH75, Rock, MN

Built 1965 Load: 31.7 t ADT: 5,696

T 72

Over: SPLIT ROCK CREEK

0.2 MI W OF JCT CR 51, Rock, MN

Built 1983 Load: 32.0 t ADT: 11

I 90

Over: ROCK RIVER

0.8 MI E OF JCT TH75, Rock, MN

Built 1965 Load: 32.0 t ADT: 5,696

MN 270

Over: BNSF RR

IN HILLS, Rock, MN

Built 1967 Load: 32.5 t ADT: 1,361

CSAH 20

Over: LITTLE BEAVER CREEK

0.5 MI W OF JCT CSAH 11, Rock, MN

Built 1952 Load: 33.2 t ADT: 266

CSAH 7

Over: MOUND CREEK

0.3 MI E OF JCT TH 75, Rock, MN

Built 1959 Load: 33.9 t ADT: 1,178

CSAH 17

Over: BLOOD RUN

0.9 MI S OF JCT CSAH 13, Rock, MN

Built 1960 Load: 36.6 t ADT: 825

CSAH 21

Over: ROCK RIVER

0.3 MI W OF JCT CSAH 2, Rock, MN

Built 1979 Load: 37.6 t ADT: 44

MN 23

Over: STREAM

3.5 MI S OF JASPER, Rock, MN

Built 1995 Load: 39.2 t ADT: 1,725

T 58

Over: BEAVER CREEK

1.1 MI W OF JCT CSAH 11, Rock, MN

Built 1985 Load: 42.4 t ADT: 69

CSAH 1

Over: ASH CREEK

1.3 MI E OF JCT TH 75, Rock, MN

Built 1991 Load: 25.1 t ADT: 466

T 102

Over: STREAM

1.9 MI S OF JCT CSAH 7, Rock, MN

Built 1995 Load: 26.1 t ADT: 25

T 60

Over: STREAM

1.8 MI E OF JCT CSAH 6, Rock, MN

Built 2000 Load: 26.1 t ADT: 25

T 64

Over: BEAVER CREEK

0.9 MI W OF JCT CSAH 11, Rock, MN

Built 1991 Load: 26.1 t ADT: 49

T 64

Over: LITTLE BEAVER CREEK

1.8 MI W OF JCT TH 75, Rock, MN

Built 1987 Load: 26.1 t ADT: 55

T 73

Over: STREAM

0.9 MI E OF JCT CSAH 19, Rock, MN

Built 2014 Load: 26.1 t ADT: 1

CSAH 4

Over: STREAM

2.1 MI W OF JCT CSAH 11, Rock, MN

Built 1927 Load: 27.0 t ADT: 1,000

CSAH 4

Over: ROCK RIVER

0.1 MI E OF JCT CSAH 18, Rock, MN

Built 2008 Load: 29.2 t ADT: 3,350

I 90

Over: STREAM

7.6 MI E OF JCT TH75, Rock, MN

Built 1964 Load: 29.4 t ADT: 9,344

CSAH 1

Over: ROCK RIVER OVERFLOW

1.6 MI E OF JCT TH 75, Rock, MN

Built 1991 Load: 29.8 t ADT: 466

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026