Brown County, WI

478 public highway bridges

Brown County Bridge Snapshot

Brown County, Wisconsin contains 478 public highway bridges in the FHWA National Bridge Inventory. Roughly 31% are rated “Good,” 26.6% “Fair,” 3.8% “Poor,” and 3.8% 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.

478

Total Bridges

31%

Good

3.8%

Poor

3.8%

Structurally Deficient

Condition Distribution

Good

31% (148)

Fair

26.6% (127)

Poor

3.8% (18)

SD

3.8% (18)

All Bridges (478)

Sort:

STH 32- ASHLAND AV

Over: LRD 6TH ST & CNRR (WC/OL

0.2M S JCT STH 54 TO E, Brown, WI

Built 1955 ADT: 1,000

STH 32- ASHLAND AV

Over: LRD 5TH ST

0.1M S JCT STH 54 TO E, Brown, WI

Built 1955 ADT: 1,000

USH 41 SB-USH 141

Over: LRD RIVERSIDE DR. & SUAM

0.5M W JCT CTH J, Brown, WI

Built 1970 ADT: 1,300

USH 41 NB-USH 141

Over: LRD RIVERSIDE DR. & SUAM

0.5M W JCT CTH J, Brown, WI

Built 1970 ADT: 1,300

SKYWALK

Over: USH 141-MAIN ST

0.2M N JCT STH 29 TO W, Brown, WI

Built 1985 ADT: 16,600

USH 41 SB-USH 141

Over: CTH B (SUNSET BEACH RD)

0.6M W JCT CTH J, Brown, WI

Built 1970 ADT: 9,000

USH 41 NB-USH 141

Over: CTH B SUNSET BEACH RD

0.6M W JCT CTH J, Brown, WI

Built 1970 ADT: 9,000

CNW RR

Over: CTH M

0.8M S JCT CTH M, Brown, WI

Built 1967 ADT: 500

STH 172 EB

Over: USH STH 32-USH B41(ASHLA

0.4M N JCT CTH HH, Brown, WI

Built 1975 ADT: 21,000

IH RAMP ASHLAND AV

Over: IH 41

2.1M N JCT CTH F, Brown, WI

Built 1974 ADT: 74,800

IH I41 NB OFF RAMP

Over: IH I41 NB ON RAMP FROM C

AT IH 41, Brown, WI

Built 1975 ADT: 11,100

STH 172 WB

Over: USH STH 32-USH B41 (ASHL

0.4M N JCT CTH HH, Brown, WI

Built 1975 ADT: 21,000

LRD HARBOR LIGHTS

Over: USH 41-USH 141

4.8M N JCT USH 141 TO S, Brown, WI

Built 1971 ADT: 44,500

STH 54-MASON ST

Over: STH 32 - ASHLAND AVE.

2.5M N JCT STH 172, Brown, WI

Built 1973 ADT: 18,900

STH 54-MASON ST

Over: LRD CHESTNUT AVE

0.5M S JCT STH 29, Brown, WI

Built 1973 ADT: 1,600

STH RAMP STH 54WB-

Over: LRD CHESTNUT AVE

0.5M S JCT STH 29, Brown, WI

Built 1973 ADT: 1,600

STH RAMP ASHLAND-S

Over: LRD CHESTNUT AVE

0.5M S JCT STH 29, Brown, WI

Built 1973 ADT: 1,600

STH 54-MASON ST

Over: RAMP STH 54WB-BROADWAY

0.4M S JCT STH 29, Brown, WI

Built 1973 ADT: 1,900

STH 54-MASON ST

Over: LRD BROADWAY ST

0.4M S JCT STH 29, Brown, WI

Built 1973 ADT: 5,100

STH RAMP STH 54WB-

Over: LRD BROADWAY ST

0.4M S JCT STH 29, Brown, WI

Built 1973 ADT: 5,100

STH RAMP BROADWAY-

Over: LRD BROADWAY ST

0.4M S JCT STH 29, Brown, WI

Built 1973 ADT: 5,100

STH 54 WB & EB (MA

Over: LRD ADAMS AVE

0.4M S JCT STH 29, Brown, WI

Built 1973 ADT: 4,100

STH RAMP JEFFERSON

Over: LRD ADAMS AVE

0.4M S JCT STH 29, Brown, WI

Built 1973 ADT: 4,100

STH 54 EB & WB (MA

Over: STH MADISON ST

3.6M E JCT USH 41 TO S, Brown, WI

Built 1973 ADT: 2,200

STH 54 EB & WB (MA

Over: LRD MADISON ST

0.4M S JCT STH 29, Brown, WI

Built 1973 ADT: 2,200

STH 54 EB OFF RAMP

Over: LRD MADISON ST

0.4M S JCT STH 29, Brown, WI

Built 1973 ADT: 2,200

STH 54 EB & WB (MA

Over: STH MONROE ST

2.4M N JCT STH 172 TO W, Brown, WI

Built 1973 ADT: 12,000

STH 54 WB ON RAMP

Over: STH 57-MONROE ST

2.5M N JCT STH 172 TO W, Brown, WI

Built 1973 ADT: 12,000

IH RAMP IH 41 S-ST

Over: STH 172 WB

0.6M W JCT USH 41, Brown, WI

Built 1974 ADT: 28,400

IH RAMP USH 41 N-S

Over: STH 172 EB

0.1M E JCT USH 41, Brown, WI

Built 1974 ADT: 28,400

STH 172 WB

Over: CTH H - BROADWAY ST

0.5M N JCT CTH HH, Brown, WI

Built 1974 ADT: 4,400

STH 172 EB

Over: CTH H BROADWAY ST

0.5M N JCT CTH HH, Brown, WI

Built 1974 ADT: 4,400

STH 172

Over: STH57-RIVERSIDE DR-FOX R

2.1M N JCT STH 32 TO N, Brown, WI

Built 1975 ADT: 13,700

CTH X - WEBSTER ST

Over: STH 172

0.4M E JCT STH 57, Brown, WI

Built 1975 ADT: 84,700

IH 43

Over: LRD QUINCY ST

0.9M N JCT STH 54, Brown, WI

Built 1980 ADT: 1,200

IH 43

Over: LRD BLYSBY ST

0.5M N JCT USH 141, Brown, WI

Built 1980 ADT: 570

CTH S

Over: IH 41

5.7M N JCT CTH JJ, Brown, WI

Built 1999 ADT: 56,400

IH 41 SB

Over: LRD LITTLE RAPIDS RD

AT IH 41, Brown, WI

Built 2000 ADT: 100

STH 172 WB

Over: LRD LIBAL STREET

0.5M N JCT CTH XX, Brown, WI

Built 1984 ADT: 5,100

STH 172 EB

Over: LRD LIBAL STREET

0.5M N JCT CTH XX, Brown, WI

Built 1984 ADT: 5,100

STH 172 WB

Over: LRD EAST RIVER DRIVE

0.6M N JCT CTH XX, Brown, WI

Built 1984 ADT: 1,300

STH 172 EB

Over: LRD EAST RIVER DRIVE

0.6M N JCT CTH XX, Brown, WI

Built 1984 ADT: 1,300

STH 172 WB

Over: CTH XX - BELLEVUE ST

2.0M N JCT CTH X, Brown, WI

Built 1984 ADT: 4,200

STH 172 EB

Over: CTH XX- BELLEVUE ST

2.0M N JCT CTH X, Brown, WI

Built 1984 ADT: 4,200

STH 172 WB

Over: CTH GV - MONROE RD

0.6M S JCT CTH V, Brown, WI

Built 1984 ADT: 20,800

STH 172 EB

Over: CTH GV - MONROE RD

0.6M S JCT CTH V, Brown, WI

Built 1984 ADT: 20,800

STH 172 WB

Over: CTH V

0.5M S JCT CTH GV, Brown, WI

Built 1984 ADT: 1,700

STH 172 EB

Over: CTH V-LIME KILN RD

0.5M S JCT CTH GV, Brown, WI

Built 1984 ADT: 1,700

IH RAMP IH 43 NB-S

Over: IH RAMP STH 172 EB-IH 43

AT STH 172, Brown, WI

Built 1980 ADT: 19,900

IH 43

Over: LRD KLONDIKE RD

1.0M E JCT CTH V, Brown, WI

Built 1980 ADT: 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