Rock County, WI

325 public highway bridges

Rock County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Rock County, Wisconsin contains 325 public highway bridges. Roughly 36.9% are rated “Good,” 26.8% “Fair,” and 3.4% “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.

325
Total Bridges
36.9%
Good
26.8%
Fair
3.4%
Poor Condition

Condition Distribution

Good
36.9% (120)
Fair
26.8% (87)
Poor
3.4% (11)

All Bridges (325)

CTH HWY D

Fair

Over: BASS CREEK

4.4M N JCT CTH Q, Rock, WI

Built 1998 Load: 30.8 t ADT: 4,218

STH 59

Fair

Over: YAHARA RIVER

3.7M E JCT STH 138, Rock, WI

Built 1946 Load: 30.8 t ADT: 2,000

LRD RACINE STREET

Fair

Over: SPRING BROOK

2.3M E JCT USH 51, Rock, WI

Built 1968 Load: 32.4 t ADT: 9,900

CTH S

Fair

Over: BR TURTLE CREEK

0.9M W JCT CTH J, Rock, WI

Built 1966 Load: 32.4 t ADT: 2,461

IH 43 NB

Fair

Over: CNW RR

4.8M N JCT IH 90 TO W, Rock, WI

Built 1975 Load: 32.4 t ADT: 8,700

IH 43 SB

Fair

Over: CNW RR

2.1M S JCT STH 140 TO S, Rock, WI

Built 1975 Load: 32.4 t ADT: 8,700

STH 59-STH 213-MAD

Fair

Over: ALLEN CREEK

3.1M E JCT STH 213 TO S, Rock, WI

Built 1981 Load: 32.4 t ADT: 5,900

CTH H

Fair

Over: BR ROCK RIVER

3.2M N JCT USH 14, Rock, WI

Built 1983 Load: 32.4 t ADT: 1,009

STH 81

Fair

Over: TURTLE CREEK

1.2M E JCT USH 51 TO N, Rock, WI

Built 1991 Load: 32.4 t ADT: 12,500

LRD CRANSTON RD

Fair

Over: SPRINGBROOK CREEK

CITY OF BELOIT, Rock, WI

Built 2002 Load: 32.4 t ADT: 4,400

LRD TARRANT RD

Fair

Over: BLACKHAWK CREEK

1.1M N JCT CTH MM, Rock, WI

Built 1989 Load: 32.4 t ADT: 105

LRD SUMMERVILLE RD

Fair

Over: LITTLE TURTLE CREEK

0.2M N JCT CTH J, Rock, WI

Built 1976 Load: 32.4 t ADT: 105

LRD N MILTON RD

Fair

Over: OTTER CREEK

3.1M N JCT STH 59 TO W, Rock, WI

Built 1955 Load: 34.0 t ADT: 9,152

STH 11

Fair

Over: MARKHAM CREEK

1.9M E JCT CTH H, Rock, WI

Built 1970 Load: 34.0 t ADT: 4,100

LRD E CHURCH ST

Fair

Over: ALLEN CREEK

0.1M E JCT STH 59, Rock, WI

Built 1983 Load: 34.0 t ADT: 243

LRD BELOIT-NEWARK

Fair

Over: SUGAR RIVER

1.2M E JCT CTH T, Rock, WI

Built 1996 Load: 34.0 t ADT: 192

CTH S, SHOPIERE RO

Fair

Over: TURTLE CREEK

1.6M N JCT CTH G, Rock, WI

Built 2008 Load: 34.0 t ADT: 5,900

USH 51-E CENTERWAY

Fair

Over: ROCK RIVER

0.5M N JCT STH 11, Rock, WI

Built 1958 Load: 35.6 t ADT: 17,527

USH 51-MAIN ST

Fair

Over: SAUNDERS CREEK

0.2M N JCT STH 59, Rock, WI

Built 1960 Load: 35.6 t ADT: 8,000

LRD SHIRLAND AVE

Fair

Over: ROCK RIVER

0.2M W JCT IH 43, Rock, WI

Built 1984 Load: 35.6 t ADT: 8,700

LRD TOWN LINE RD

Fair

Over: ROCK RIVER

0.1M W JCT USH 51, Rock, WI

Built 1995 Load: 35.6 t ADT: 2,089

LRD COLLEY RD

Fair

Over: TURTLE CREEK

0.5M E JCT MILWAUKEE RD, Rock, WI

Built 1983 Load: 37.3 t ADT: 1,281

STH 59

Fair

Over: ROCK RIVER

0.6M E JCT IH 90 TO E, Rock, WI

Built 1990 Load: 37.3 t ADT: 10,300

STH 81

Fair

Over: RACCOON CREEK

1.7M E JCT CTH K, Rock, WI

Built 1990 Load: 37.3 t ADT: 3,300

LRD WILLOWBROOK RD

Fair

Over: SPRING BROOK

0.6M N JCT COLLEY RD, Rock, WI

Built 1989 Load: 37.3 t ADT: 4,000

USH 14-STH 11

Fair

Over: BR BLACKHAWK CREEK

3.6M E JCT CTH O, Rock, WI

Built 1982 Load: 38.9 t ADT: 9,600

STH EB STH 11

Fair

Over: UNION PACIFIC RR

0.9M E JCT CTH G, Rock, WI

Built 1989 Load: 38.9 t ADT: 9,550

LRD MINERAL POINT

Fair

Over: BR STEVENS CREEK

1.0M W JCT CTH H, Rock, WI

Built 1990 Load: 38.9 t ADT: 196

STH 104

Fair

Over: ALLEN CREEK

4.8M N JCT CTH C, Rock, WI

Built 1990 Load: 38.9 t ADT: 4,100

LRD ST LAWRENCE RD

Fair

Over: RACCOON CREEK

0.7M E JCT CTH H, Rock, WI

Built 1992 Load: 38.9 t ADT: 1,104

LRD SOUTH RIVER RD

Fair

Over: ROCK RIVER

0.1M E JCT CTH D, Rock, WI

Built 2004 Load: 38.9 t ADT: 1,100

USH 14

Fair

Over: BLACKHAWK CREEK

1.2M E JCT CTH A, Rock, WI

Built 1951 Load: 40.5 t ADT: 11,300

CTH D AFTON RD

Fair

Over: MARKHAM CREEK

2.6M W JCT USH 51, Rock, WI

Built 1957 Load: 40.5 t ADT: 2,235

LRD W RACINE ST

Fair

Over: ROCK RIVER

0.9M E JCT USH 51, Rock, WI

Built 1949 Load: 40.5 t ADT: 6,600

STH 81

Fair

Over: WILLOW CREEK

2.9M E JCT STH 11 TO E, Rock, WI

Built 1976 Load: 40.5 t ADT: 3,500

LRD BELOIT AVE

Fair

Over: SPRING BROOK

0.7M S JCT STH 11, Rock, WI

Built 1990 Load: 40.5 t ADT: 7,500

LRD TOWNSEND RD

Fair

Over: STEVENS CREEK

3.1M W JCT STH 184, Rock, WI

Built 1990 Load: 40.5 t ADT: 135

STH 104

Fair

Over: ALLEN CREEK

0.7M N JCT STH 59 E, Rock, WI

Built 1993 Load: 40.5 t ADT: 3,000

LRD SCHAFFNER RD

Fair

Over: BR BASS CREEK

0.8M W JCT CTH H, Rock, WI

Built 1996 Load: 40.5 t ADT: 40

STH 11

Fair

Over: STEVENS CREEK

2.1M E JCT CTH B, Rock, WI

Built 1992 Load: 42.1 t ADT: 4,800

USH 51

Fair

Over: SOO LINE RR

11.4M N JCT STH 81, Rock, WI

Built 1990 Load: 42.1 t ADT: 17,700

LRD FOOTVILLE-HANO

Fair

Over: STEVENS CREEK

0.1M W JCT CTH H, Rock, WI

Built 1990 Load: 43.7 t ADT: 235

USH 51-CENTER AVE

Fair

Over: ROCK RIVER

11.5M N JCT STH 81, Rock, WI

Built 1990 Load: 45.4 t ADT: 17,700

CTH B

Fair

Over: NORWEGIAN CREEK

1.8M E JCT STH 104, Rock, WI

Built 1974 Load: 47.0 t ADT: 525

LRD NELSON RD

Good

Over: BR SUGAR RIVER

3.8M S JCT STH 81, Rock, WI

Built 1958 Load: 19.4 t ADT: 117

LRD NELSON RD

Good

Over: BR SUGAR RIVER

2.1M S JCT STH 81, Rock, WI

Built 1957 Load: 19.4 t ADT: 117

USH 14

Good

Over: SPRING BROOK

0.4M E JCT CTH A, Rock, WI

Built 1951 Load: 22.7 t ADT: 11,300

LRD ROCKPORT RD

Good

Over: MARKHAM CREEK

0.3M E JCT STH 11, Rock, WI

Built 1989 Load: 24.3 t ADT: 1,757

LRD S FOOTVILLE RD

Good

Over: BR BASS CREEK

1.7M S JCT STH 11, Rock, WI

Built 1982 Load: 24.3 t ADT: 182

LRD N. EVANSVILLE-

Good

Over: ALLEN CREEK

2.3M N JCT CTH C, Rock, WI

Built 1981 Load: 25.9 t ADT: 293

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

Related

Browse all → | Rankings →
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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.