State profile · Near median Poor share

Wisconsin bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Wisconsin, based on the FHWA National Bridge Inventory.

14,851
Public bridges
41.3%
Good condition
6.1%
Poor condition

Data updated May 2026

Total Bridges

14,851

Public highway bridges in Wisconsin

Good Condition

41.3%

6,130 bridges rated 7-9

-8.7pp vs 50% benchmark

Poor Condition

6.1%

911 bridges whose lowest applicable component is rated 0-4

-0.9pp vs national avg 7.0%

Wisconsin vs national bridge condition

Wisconsin - Good condition share 41.3%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Wisconsin - Poor-condition share 20.4%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Wisconsin vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Wisconsin on the same metric.

MS

Mississippi

5.92% top marginal rate
Structure
Progressive
Burden @ $100K
$16,823

SC

South Carolina

6.10% top marginal rate
Structure
Progressive
Burden @ $100K
$5,396
Selected

WI

Wisconsin

6.13% top marginal rate
Structure
Progressive
Burden @ $100K
$14,851

NC

North Carolina

6.16% top marginal rate
Structure
Progressive
Burden @ $100K
$18,901

HI

Hawaii

6.47% top marginal rate
Structure
Progressive
Burden @ $100K
$1,206

Bridges Needing Most Attention in Wisconsin

Six lowest-condition bridges in Wisconsin, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

All Bridges in Wisconsin

STH 100 NB-S 108TH

Unknown

Over: IH 43 NB

6.4M N JCT CTH Y (D), Milwaukee, WI

Built 1965 ADT: 38,250

IH 43 SB-USH 45 SB

Unknown

Over: STH 100 - S 108TH ST

0.2M N JCT USH 45 TO N, Milwaukee, WI

Built 1965 ADT: 22,000

IH 43 NB/USH 45 NB

Unknown

Over: CTH Y (W LAYTON AVE)

0.2M E JCT STH 100, Milwaukee, WI

Built 1966 ADT: 14,100

IH 43 SB/USH 45 SB

Unknown

Over: CTH Y (W LAYTON AVE)

0.2M E JCT STH 100, Milwaukee, WI

Built 1966 ADT: 14,100

10TH - VLIET ST PE

Unknown

Over: STH 145

0.9M N JCT MILWAUKEE ST, Milwaukee, WI

Built 1969 ADT: 25,800

CNW RR

Unknown

Over: STH 175-APPLETON AVE

2.7M N JCT STH 181, Milwaukee, WI

Built 1934 ADT: 15,700

STH 175-APPLETON A

Unknown

Over: CTH E W SILVER SPRING DR

1.1M E JCT STH 100, Milwaukee, WI

Built 1967 ADT: 31,300

CNW RR

Unknown

Over: STH 190-CAPITOL DR

7.3M E JCT STH 164 TO N, Milwaukee, WI

Built 1932 ADT: 51,900

LRD H DAVIDSON ACC

Unknown

Over: STH 190 (CAPITOL DR)

7.5M E JCT STH 164 TO N, Milwaukee, WI

Built 1967 ADT: 26,800

IH INTERCHANGE RD

Unknown

Over: STH 190 (CAPITOL DR)

7.5M E JCT STH 164 TO N, Milwaukee, WI

Built 1967 ADT: 51,900

IH INTERCHANGE RD

Unknown

Over: STH 190 (CAPITOL DR)

7.6M E JCT STH 164 TO N, Milwaukee, WI

Built 1967 ADT: 51,900

IH 41/USH 45 SB

Unknown

Over: RAMP, IH 41/USH 45 - STH

AT JCT USH 45-STH 190, Milwaukee, WI

Built 1967 ADT: 32,900

IH 41/USH 45 NB

Unknown

Over: RAMP, IH 41/USH 45 - STH

AT JCT USH 45-STH 190, Milwaukee, WI

Built 1967 ADT: 5,800

STH 190 EB-CAPITOL

Unknown

Over: LRD MENOMONEE RIVER PARK

0.4M W JCT STH 100, Milwaukee, WI

Built 1967 ADT: 3,200

STH 190 WB-CAPITOL

Unknown

Over: LRD MENOMONEE RIVER PARK

0.4M W JCT STH 100, Milwaukee, WI

Built 1967 ADT: 3,200

IH 41/USH 45/STH 1

Unknown

Over: STH 175 SB

1.1M S JCT CTH PP TO E, Milwaukee, WI

Built 1967 ADT: 8,100

IH 41/USH 45/STH 1

Unknown

Over: STH 175 SB

1.1M S JCT CTH PP TO E, Milwaukee, WI

Built 1967 ADT: 4,050

IH 41/USH 45/STH 1

Unknown

Over: CTH W MILL RD (CTH S)

2.4M W JCT STH 181, Milwaukee, WI

Built 1967 ADT: 4,200

IH 41/USH 45/STH 1

Unknown

Over: CTH W MILL RD (CTH S)

2.4M W JCT STH 181, Milwaukee, WI

Built 1967 ADT: 4,200

IH 41/USH 45/STH10

Unknown

Over: STH 175 NB-SOUTH INTRCH

0.5M N JCT USH 45, Milwaukee, WI

Built 1967 ADT: 7,400

IH 41/USH45/STH 10

Unknown

Over: STH 175 NB

0.5M N JCT USH 45, Milwaukee, WI

Built 1967 ADT: 7,400

STH 175 SB (W APPL

Unknown

Over: CTH W MILL RD (CTH S)

2.5M W JCT STH 181, Milwaukee, WI

Built 1967 ADT: 4,300

STH 175 NB (W. APP

Unknown

Over: LRD W MILL RD (CTH S)

2.4M W JCT STH 181, Milwaukee, WI

Built 1967 ADT: 4,300

IH 41/USH 45 SB-ZO

Unknown

Over: LRD W BURLEIGH ST

0.4M W JCT STH 100, Milwaukee, WI

Built 1967 ADT: 18,300

IH 41NB-ZOO FREEWA

Unknown

Over: LRD W BURLEIGH ST

0.4M W JCT STH 100, Milwaukee, WI

Built 1967 ADT: 18,300

CTH EE - W HAMPTON

Unknown

Over: IH 41/USH 45-ZOO FREEWAY

1.2M N JCT STH 190 TO E, Milwaukee, WI

Built 1967 ADT: 147,000

IH 41/USH 45 SB-ZO

Unknown

Over: STH 100 SB-SILVER SPRING

1.5 MI S JCT USH 41, Milwaukee, WI

Built 1967 ADT: 27,000

IH 41/USH 45 NB-ZO

Unknown

Over: STH 100 SB-SILVER SPRING

1.5M S JCT USH 41 (G), Milwaukee, WI

Built 1967 ADT: 26,800

LRD W FLORIST AVE

Unknown

Over: IH 41/USH 45/STH 100

2.7M N JCT STH 190 TO E, Milwaukee, WI

Built 1967 ADT: 125,150

LRD S 124TH ST

Unknown

Over: IH-43

5.3M N JCT CTH Y, Milwaukee, WI

Built 1968 ADT: 46,500

LRD S 116TH ST

Unknown

Over: IH 43

5.8M N JCT CTH Y, Milwaukee, WI

Built 1967 ADT: 56,000

STH 181-N 76TH ST

Unknown

Over: LRD W DOUGLAS AVE

AT JCT WITH STH 181, Milwaukee, WI

Built 1968 ADT: 2,002

CMSTPP RR

Unknown

Over: STH 181-N 76TH ST

2.1M N JCT STH 145 TO N, Milwaukee, WI

Built 1968 ADT: 28,100

CMSTPP RR

Unknown

Over: CTH BB W RAWSON AVE

0.4M E JCT CTH V, Milwaukee, WI

Built 1968 ADT: 25,900

CNW RR

Unknown

Over: LRD W SILVER SPRING DR

0.1M E JCT STH 57, Milwaukee, WI

Built 1970 ADT: 26,400

CTH BB - W RAWSON

Unknown

Over: STH 36-LOOMIS RD

2.3M N JCT STH 100, Milwaukee, WI

Built 1968 ADT: 14,900

IH 41/USH 45/STH10

Unknown

Over: STH 145

0.2M N JCT CTH PP, Milwaukee, WI

Built 2000 ADT: 19,500

IH 41/USH 45/STH 1

Unknown

Over: STH 145

0.5M N JCT CTH PP, Milwaukee, WI

Built 2000 ADT: 19,500

IH 41/45 NB

Unknown

Over: STH 145 (124 TH STREET)

1.1M N JCT CTHPP, Milwaukee, WI

Built 2000 ADT: 14,000

IH 41/USH 45/STH 1

Unknown

Over: STH 145 (124 TH STREET)

1.1M N JCT CTHPP, Milwaukee, WI

Built 2000 ADT: 14,000

IH RAMP, IH 41/USH

Unknown

Over: STH 145/124TH ST

1.1M N JCT CTH PP, Milwaukee, WI

Built 2001 ADT: 11,700

IH RAMP, LINCOLN M

Unknown

Over: IH RAMP N JACKSON ST-IH

0.4M S JCT STH 32, Milwaukee, WI

Built 1975 ADT: 15,700

IH 794 WB-LAKE INT

Unknown

Over: LRD N JACKSON ST

0.4M S JCT STH 32, Milwaukee, WI

Built 1975 ADT: 8,200

IH 794 WB-LAKE INT

Unknown

Over: IH RAMP, IH 794 EB-JACK

CITY OF MILWAUKEE, Milwaukee, WI

Built 1975 ADT: 15,300

IH 794 WB-LAKE INT

Unknown

Over: IH RAMP, IH 794 EB-LINC

CITY OF MILWAUKEE, Milwaukee, WI

Built 1974 ADT: 13,300

IH-794 WB-LAKE INT

Unknown

Over: IH-794 EB ENTRANCE RAMP

0.1 MI S JCT E CLYBOURN S, Milwaukee, WI

Built 1975 ADT: 13,300

IH 794 WB-LAKE INT

Unknown

Over: IH RAMP, LINCOLN MEMORIA

CITY OF MILWAUKEE, Milwaukee, WI

Built 1975 ADT: 13,300

IH 794 WB-LAKE INT

Unknown

Over: LRD CHICAGO ST

AT IH 794 WB, Milwaukee, WI

Built 1975 ADT: 1,800

IH 794 EB

Unknown

Over: STH 32/MILWAUKEE ST

0.3M N JCT USH 18 TO E, Milwaukee, WI

Built 1974 ADT: 12,700

IH 794 EB

Unknown

Over: LRD N JACKSON ST

0.4M S JCT STH 32, Milwaukee, WI

Built 1974 ADT: 8,200

Showing 1,501-1,550 of 14,851 bridges

Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.