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)

Sort:

IH 43 SB

Over: IH 39 / IH 90 / STH 81

IH 43 / IH 39 / IH 90 INT, Rock, WI

Built 2021 ADT: 55,500

IH 39 SB TO IH 43

Over: IH 39 NB & SB / IH 90 WB

IH 43 / IH 39 / IH 90 INT, Rock, WI

Built 2021 ADT: 59,100

IH 39 NB / IH 90 W

Over: STH 81

IH-39/90 & IH 43 INTERCHA, Rock, WI

Built 2021 ADT: 5,050

IH 43 NB

Over: IH 90

IH 43 / IH 39 / IH 90 INT, Rock, WI

Built 2021 ADT: 2,700

LRD HART RD

Over: IH 39/90

1.4 M N JCT IH-43, Rock, WI

Built 2016 ADT: 52,600

CTH S (SHOPIERE RD

Over: IH 39

2.4 M NORTH IH43, Rock, WI

Built 2015 ADT: 52,100

LRD CREEK ROAD

Over: IH 39 / IH 90

0.6 MI N OF JCT WITH CTH, Rock, WI

Built 2016 ADT: 57,700

IH 39 SB / IH 90 E

Over: LRD TOWN LINE RD

1.5M E JCT CTH G, Rock, WI

Built 2019 ADT: 2,000

IH 39 NB / IH 90 W

Over: LRD TOWN LINE RD

1.5M E JCT CTH G, Rock, WI

Built 2018 ADT: 1,208

LRD WOODMAN RD EB

Over: IH 39 / IH 90

LOCATION UNKNOWN, PLEASE, Rock, WI

Built 2017 ADT: 57,700

STH 11 EB (AVALON

Over: IH 39 / IH 90

7.4 MI N JCT IH 43, Rock, WI

Built 2016 ADT: 57,700

STH 11 WB (AVALON

Over: IH 39 / IH 90

7.4 M N JCT IH 43, Rock, WI

Built 2016 ADT: 57,700

LRD STATELINE RD E

Over: IH 39/90

LOCATION UNKNOWN, PLEASE, Rock, WI

Built 2017 ADT: 55,500

STH 11 / E. RACINE

Over: IH 39 SB

3.1 MI. S OF USH 14, Rock, WI

Built 2013 ADT: 59,200

IH 39 SB / IH 90 E

Over: LRD PALMER DRIVE

0.5M E JCT STH 11, Rock, WI

Built 2019 ADT: 2,500

IH 39 NB / IH 90 W

Over: LRD PALMER PARK DR

0.5M E JCT STH 11, Rock, WI

Built 2018 ADT: 2,500

IH 39 SB / IH 90 E

Over: LRD RUGER AVE

1.6M W JCT USH 14, Rock, WI

Built 2019 ADT: 4,300

IH 39 NB / IH 90 W

Over: LRD RUGER AVE

1.6M W JCT USH 14, Rock, WI

Built 2018 ADT: 6,200

IH 39 SB / IH 90 E

Over: LRD MT ZION AVE

1.3M N JCT STH 26, Rock, WI

Built 2019 ADT: 7,000

IH 39 NB / IH 90 W

Over: LRD MT ZION AVE

1.3M N JCT STH 26, Rock, WI

Built 2018 ADT: 7,400

IH 39 SB / IH 90 E

Over: USH 14

0.7M E JCT STH 26, Rock, WI

Built 2021 ADT: 28,800

IH 39 NB / IH 90 W

Over: USH 14

0.7M E JCT STH 26, Rock, WI

Built 2020 ADT: 28,800

CMSTPP RR

Over: USH 51

4.5M N JCT STH 81, Rock, WI

Built 1938 ADT: 8,240

IH 39 NB / IH 90 W

Over: LRD RYAN ROAD

0.2 MI E JCT MORSE ST, Rock, WI

Built 2020 ADT: 4,500

IH 39 SB / IH 90 E

Over: STH 26-MILTON AVE

0.4M N JCT USH 14, Rock, WI

Built 2021 ADT: 32,680

IH 39 NB / IH 90 W

Over: STH 26-MILTON AVE

0.4M N JCT USH 14, Rock, WI

Built 2020 ADT: 32,680

IH 39 SB / IH 90 E

Over: LRD KENNEDY RD & BIKE PA

0.9M N JCT USH 14, Rock, WI

Built 2021 ADT: 3,670

IH 39 NB / IH 90 W

Over: LRD KENNEDY RD

0.9M N JCT USH 14, Rock, WI

Built 2020 ADT: 3,670

IH 39SB/90 EB

Over: LRD TOWN LINE RD

1.7M W JCT CTH Y, Rock, WI

Built 2019 ADT: 1,600

IH 39 NB / IH 90 W

Over: LRD TOWN LINE RD

1.7M W JCT CTH Y, Rock, WI

Built 2020 ADT: 1,580

LRD MANOGUE ROAD

Over: IH 39 / IH 90

3.6M N JCT STH 26, Rock, WI

Built 2017 ADT: 53,500

IH 39 SB / IH 90 E

Over: CTH M

2.1M W JCT STH 59, Rock, WI

Built 2019 ADT: 1,300

IH 39NB/90 WB

Over: CTH M

2.1M W JCT STH 59, Rock, WI

Built 2020 ADT: 1,100

IH 39/90 SB/EB

Over: LRD NEWVILLE RD

1.2M N JCT CTH M, Rock, WI

Built 2019 ADT: 1,200

IH 39 NB/ IH 90 WB

Over: LRD NEWVILLE RD

1.2M N JCT CTH M, Rock, WI

Built 2020 ADT: 1,200

IH39SB/IH90EB

Over: ROCK RIVER / ELLENDALE R

0.1M N JCT STH 59, Rock, WI

Built 2018 ADT: 1,750

IH 39 NB

Over: ROCK RIVER

0.3 MI W JCT STH 59, Rock, WI

Built 2016 ADT: 1,750

STH 59

Over: IH 39

8.2 M N JCT STH 26, Rock, WI

Built 2016 ADT: 59,100

IH-39 SB/90 EB

Over: LRD RYAN ROAD

0.2 MI E JCT MORSE ST, Rock, WI

Built 2021 ADT: 4,540

BELOIT COLLEGE POW

Over: USH 51

99990000000 004, Rock, WI

CMSTPP RR

Over: USH 51-N PARKER DR

0.2M N JCT STH 26, Rock, WI

Built 1942 ADT: 12,480

CNW RR

Over: CTH E

1.2M S JCT USH 14, Rock, WI

Built 1902 ADT: 2,550

CNW RR

Over: LRD CAINVILLE RD

0.6M S JCT CTH A, Rock, WI

Built 1900 ADT: 75

CNW RR

Over: CTH J

0.7M N JCT CTH X, Rock, WI

Built 1905 ADT: 900

CMSTPP RR

Over: LRD CROSBY RD

0.2M S JCT STH 11, Rock, WI

Built 1900 ADT: 225

CMSTPP RR

Over: LRD CARVERS RD

2.7M S JCT USH 14, Rock, WI

Built 1906 ADT: 75

CMSTPP RR

Over: LRD MILTON RD

0.7M S JCT USH 14, Rock, WI

Built 1907 ADT: 150

CMSTPP RR

Over: LRD PRAIRIE AVE

0.3M E JCT USH 51, Rock, WI

Built 1930 ADT: 150

CNW RR

Over: CTH J

1.1M E JCT CTH S, Rock, WI

Built 1905 ADT: 610

CNW RR

Over: LRD ROCKPORT RD

0.3M W JCT USH 51, Rock, WI

Built 1900 ADT: 5,380

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.