Rock County, WI

325 public highway bridges

Rock County Bridge Snapshot

Rock County, Wisconsin contains 325 public highway bridges in the FHWA National Bridge Inventory. Roughly 36.9% are rated “Good,” 26.8% “Fair,” 3.4% “Poor,” and 3.4% 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 WI 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.

325

Total Bridges

36.9%

Good

3.4%

Poor

3.4%

Structurally Deficient

Condition Distribution

Good

36.9% (120)

Fair

26.8% (87)

Poor

3.4% (11)

SD

3.4% (11)

All Bridges (325)

Sort:

CMSTPP RR

Over: LRD ROCKPORT RD

0.1M W JCT USH 51, Rock, WI

Built 1907 ADT: 5,380

CNW RR

Over: LRD FRANKLIN ST

0.1M N JCT USH 51, Rock, WI

Built 1938 ADT: 4,540

CMSTPP RR

Over: LRD N MAIN ST

0.1M N JCT USH 51, Rock, WI

Built 1890 ADT: 4,500

CNW RR

Over: LRD N RIVER ST

0.1M N JCT USH 51, Rock, WI

Built 1925 ADT: 4,000

CMSTPP RR

Over: LRD RIVERSIDE ST

0.2M W JCT USH 51, Rock, WI

Built 1900 ADT: 1,600

CNW RR

Over: LRD RIVERSIDE ST

0.1M W JCT USH 51, Rock, WI

Built 1907 ADT: 1,600

CNW RR

Over: LRD ELGIN AVE

1.0M W JCT USH 51, Rock, WI

Built 1901 ADT: 800

LRD NELSON RD

Over: SUGAR RIVER

2.6M S JCT STH 81, Rock, WI

Built 1958 Load: 16.2 t ADT: 117

LRD STEBBENSVILLE

Over: YAHARA RIVER

3.8M E JCT STH 138, Rock, WI

Built 1969 Load: 17.8 t ADT: 47

LRD CASEY RD

Over: BADFISH CREEK

0.2M N JCT STH 59, Rock, WI

Built 1967 Load: 17.8 t ADT: 155

LRD CREEK RD

Over: TURTLE CREEK

4.1M E JCT STH 140, Rock, WI

Built 1957 Load: 19.4 t ADT: 396

LRD W MEMORIAL DR

Over: ROCK RIVER

0.1M W JCT USH 51, Rock, WI

Built 1969 Load: 19.4 t ADT: 15,900

STH 59

Over: BADFISH CREEK

2.3M E JCT STH 138, Rock, WI

Built 1950 Load: 21.1 t ADT: 2,000

USH 51

Over: ROCK RIVER

0.9M N JCT CTH M TO W, Rock, WI

Built 1938 Load: 21.1 t ADT: 5,800

LRD STATE LINE RD

Over: DRY CREEK

0.8M S JCT CTH P, Rock, WI

Built 1973 Load: 21.1 t ADT: 41

LRD OLD HWY 92

Over: ALLEN CREEK

0.5M N JCT STH 59, Rock, WI

Built 1962 Load: 22.7 t ADT: 96

CTH J

Over: TURTLE CREEK OVERFLOW

0.2M N JCT CTH S, Rock, WI

Built 1953 Load: 24.3 t ADT: 1,035

LRD MARSH RD

Over: BASS CREEK

0.8M N JCT CTH B, Rock, WI

Built 1980 Load: 24.3 t ADT: 97

LRD BURDICK RD

Over: MARSH CREEK

1.0M S JCT USH 14, Rock, WI

Built 1982 Load: 24.3 t ADT: 264

LRD MILTON SHOPIER

Over: BLACKHAWK CREEK

1.2M N JCT CTH MM, Rock, WI

Built 1982 Load: 24.3 t ADT: 58

LRD LIMA CENTER RD

Over: JOHNSTOWN CREEK

2.8M N JCT CTH A, Rock, WI

Built 1970 Load: 24.3 t ADT: 88

LRD CARVERS RD

Over: SPRING CREEK

3.8M S JCT USH 14, Rock, WI

Built 1962 Load: 24.3 t ADT: 431

LRD BELOIT-NEWARK

Over: SUGAR RIVER

0.9M E JCT CTH T, Rock, WI

Built 1982 Load: 24.3 t ADT: 176

CTH 6TH ST CTH D

Over: LENIGAN CREEK

0.5M N JCT STH 81, Rock, WI

Built 1948 Load: 24.3 t ADT: 11,300

LRD WRIGHT RD

Over: SPRING BROOK

0.1M N JCT CTH MM, Rock, WI

Built 1969 Load: 24.3 t ADT: 8,300

LRD PALMER DR

Over: SPRING BROOK

0.1M N JCT STH 11, Rock, WI

Built 1935 Load: 24.3 t ADT: 2,500

LRD S RIVER RD

Over: BR ROCK RIVER

1.3M E JCT CTH D, Rock, WI

Built 1970 Load: 24.3 t ADT: 738

LRD MINERAL POINT

Over: BR STEVENS CREEK

2.3M W JCT STH 184, Rock, WI

Built 1977 Load: 24.3 t ADT: 176

LRD BRANDHERM RD

Over: BRA SUGAR RIVER

1.8M W JCT CTH K, Rock, WI

Built 1974 Load: 24.3 t ADT: 94

LRD SPRING CREEK R

Over: BRA RACCOON CREEK

1.1M W JCT STH 213, Rock, WI

Built 1976 Load: 24.3 t ADT: 450

LRD SUMMERVILLE RD

Over: BRA LITTLE TURTLE CRK

0.2M S JCT CTH X, Rock, WI

Built 1977 Load: 24.3 t ADT: 47

LRD OLD 92 ROAD

Over: NORWEGIAN CREEK

1.3M N JCT CTH B, Rock, WI

Built 1974 Load: 24.3 t ADT: 23

LRD LARID ROAD

Over: RACCOON CREEK

1.5M E JCT CTH K, Rock, WI

Built 1972 Load: 24.3 t ADT: 70

LRD STERNS RD (DEA

Over: BR BADFISH CREEK

1.0M W JCT STH 59, Rock, WI

Built 1945 Load: 24.3 t ADT: 2

CTH D

Over: BR FISHER CREEK

1.4M W JCT USH 51, Rock, WI

Built 1962 Load: 25.9 t ADT: 3,331

USH 51

Over: BR ROCK RIVER

6.7M N JCT STH 81, Rock, WI

Built 1992 Load: 25.9 t ADT: 8,750

USH 14

Over: ROCK RIVER

3.6M E JCT CTH H, Rock, WI

Built 1948 Load: 25.9 t ADT: 10,900

CTH M

Over: YAHARA RIVER

0.1M E JCT CTH H, Rock, WI

Built 1950 Load: 27.5 t ADT: 1,280

STH 11

Over: BASS CREEK

3.5M E JCT STH 213, Rock, WI

Built 1958 Load: 27.5 t ADT: 4,400

CTH D

Over: FISHER CREEK

1.6M W JCT USH 51, Rock, WI

Built 1962 Load: 27.5 t ADT: 2,235

LRD TIGHE RD

Over: LITTLE TURTLE CREEK

2.9M E JCT STH 140, Rock, WI

Built 1976 Load: 27.5 t ADT: 105

CTH M

Over: ROCK RIVER

0.1M S JCT CTH F TO N, Rock, WI

Built 1956 Load: 29.2 t ADT: 1,413

LRD HANKE RD

Over: BLACKHAWK CREEK

0.6M N JCT CTH MM, Rock, WI

Built 1978 Load: 29.2 t ADT: 58

LRD EMERALD GROVE

Over: BR BLACKHAWK CREEK

0.1M S JCT USH 14, Rock, WI

Built 1993 Load: 29.2 t ADT: 376

CTH A

Over: STEVENS CREEK

3.2M W JCT STH 184, Rock, WI

Built 1984 Load: 29.2 t ADT: 960

LRD PARK AVE

Over: TURTLE CREEK

0.2M S JCT USH 51, Rock, WI

Built 1988 Load: 29.2 t ADT: 3,300

LRD HENRY AVE

Over: ROCK RIVER

0.1M W JCT USH 51, Rock, WI

Built 1956 Load: 30.8 t ADT: 11,400

CTH H

Over: YAHARA RIVER

0.2M N JCT CTH M TO E, Rock, WI

Built 1952 Load: 30.8 t ADT: 999

CTH D

Over: BR ROCK RIVER

2.5M N JCT CTH Q, Rock, WI

Built 1959 Load: 30.8 t ADT: 3,331

CTH Q NEWARK RD

Over: ROCK RIVER

0.1M W JCT USH 51, Rock, WI

Built 1972 Load: 30.8 t ADT: 9,300

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