St. Croix County, WI

308 public highway bridges

St. Croix County Bridge Snapshot

St. Croix County, Wisconsin contains 308 public highway bridges in the FHWA National Bridge Inventory. Roughly 53.2% are rated “Good,” 24% “Fair,” 2.6% “Poor,” and 2.6% 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.

308

Total Bridges

53.2%

Good

2.6%

Poor

2.6%

Structurally Deficient

Condition Distribution

Good

53.2% (164)

Fair

24% (74)

Poor

2.6% (8)

SD

2.6% (8)

All Bridges (308)

Sort:

LRD RUSTIC RD #4

Over: BEAVER CREEK

0.5M W JCT CTH W, St. Croix, WI

Built 1960 Load: 27.5 t ADT: 60

LRD 10TH AVE

Over: FRENCH CREEK

1.1M W JCT CTH B, St. Croix, WI

Built 1962 Load: 27.5 t ADT: 110

CTH K

Over: WILLOW RIVER

1.3M E JCT STH 65, St. Croix, WI

Built 1964 Load: 29.2 t ADT: 3,000

STH 65

Over: BR KINNICKINNIC RIVER

0.1M N JCT STH 35, St. Croix, WI

Built 1967 Load: 29.2 t ADT: 4,600

LRD RUSTIC RD #3

Over: BEAVER CREEK

1.3M N JCT CTH E, St. Croix, WI

Built 1977 Load: 29.2 t ADT: 269

STH 29

Over: CADY CREEK

1.2M E JCT STH 128 TO N, St. Croix, WI

Built 1979 Load: 32.4 t ADT: 1,600

USH 12

Over: EAU GALLE RIVER

2.5M E JCT CTH B, St. Croix, WI

Built 1987 Load: 32.4 t ADT: 1,700

LRD 140TH AVE

Over: DRAINAGE WAY

1.1M E JCT STH 65, St. Croix, WI

Built 1994 Load: 32.4 t ADT: 301

CTH T

Over: WILLOW RIVER

2.8M N JCT CTH G, St. Croix, WI

Built 1976 Load: 34.0 t ADT: 2,000

STH 64-STH 65-KNOW

Over: WILLOW RIVER

0.2M E JCT STH 65 TO S, St. Croix, WI

Built 1924 Load: 34.0 t ADT: 19,790

LRD SEVENTH ST (DE

Over: UNION PACIFIC RR

0.4M E JCT STH 35, St. Croix, WI

Built 1987 Load: 34.0 t ADT: 865

CTH D

Over: CARR CREEK

0.8M N JCT USH 12, St. Croix, WI

Built 1994 Load: 34.0 t ADT: 1,100

STH 46

Over: WILLOW RIVER

1.5M N JCT STH 64, St. Croix, WI

Built 2000 Load: 34.0 t ADT: 4,100

CTH T

Over: KINNICKINNIC RIVER

1.7M S JCT CTH G, St. Croix, WI

Built 1974 Load: 34.0 t ADT: 2,000

USH 63

Over: S FK WILLOW RIVER

0.8M N JCT CTH S, St. Croix, WI

Built 1986 Load: 35.6 t ADT: 4,300

CTH N

Over: BR RUSH RIVER

0.6M E JCT USH 63, St. Croix, WI

Built 1987 Load: 35.6 t ADT: 812

LRD 60TH AVE

Over: RUSH RIVER - DRY STREAMB

0.9 MI W USH 63, St. Croix, WI

Built 1980 Load: 36.0 t ADT: 300

STH EB STH 64

Over: APPLE RIVER

AT APPLE RIVER, St. Croix, WI

Built 2005 Load: 37.3 t ADT: 7,850

STH SB STH 35/64

Over: APPLE RIVER

AT APPLE RIVER, St. Croix, WI

Built 2005 Load: 37.3 t ADT: 7,850

USH 63

Over: WILLOW RIVER

2.1M N JCT STH 64 TO E, St. Croix, WI

Built 1936 Load: 37.3 t ADT: 4,800

CTH A

Over: CN RAILROAD

0.1M EAST OF JCT STH 64, St. Croix, WI

Built 1977 Load: 38.9 t ADT: 6,148

USH 63

Over: BR RUSH RIVER

1.2M N JCT IH 94 TO E, St. Croix, WI

Built 1939 Load: 38.9 t ADT: 11,300

CTH A

Over: WILLOW RIVER

1.5M EAST OF STH 64, St. Croix, WI

Built 1982 Load: 40.5 t ADT: 6,656

LRD 4TH AVE

Over: BRANCH RUSH RIVER

.6M EAST OF STH 63, St. Croix, WI

Built 2005 Load: 40.5 t ADT: 220

USH 63

Over: RUSH RIVER

1.0M N JCT USH 12 TO W, St. Croix, WI

Built 1939 Load: 40.5 t ADT: 6,600

STH 65

Over: CNW RR

1.9M N JCT IH 94 TO E, St. Croix, WI

Built 1990 Load: 42.1 t ADT: 7,900

USH 12

Over: WILSON CREEK

2.4M E JCT STH 128, St. Croix, WI

Built 1996 Load: 42.1 t ADT: 1,600

LRD 220TH STREET

Over: BR RUSH RIVER

0.1M S JCT USH 12, St. Croix, WI

Built 1991 Load: 42.1 t ADT: 168

LRD DUNN - ST CROI

Over: SANDY CREEK

0.6M N JCT STH 170, St. Croix, WI

Built 1971 Load: 42.1 t ADT: 310

LRD SANDY CREEK RD

Over: SANDY CREEK

1.3M S JCT CTH X, St. Croix, WI

Built 1986 Load: 42.1 t ADT: 170

LRD 130TH AVE

Over: CARR CREEK

2.0M E JCT USH 63, St. Croix, WI

Built 1987 Load: 42.1 t ADT: 175

CTH N

Over: RUSH RIVER

0.1M W JCT USH 63, St. Croix, WI

Built 1990 Load: 45.4 t ADT: 812

CTH J

Over: S BR KINNICKINNIC RIVER

2.2M W JCT CTH T, St. Croix, WI

Built 1963 Load: 47.0 t ADT: 328

CTH B

Over: FRENCH CREEK

2.4M S JCT CTH N, St. Croix, WI

Built 1979 Load: 47.0 t ADT: 1,300

IH 94 WB

Over: EAU GALLE RIVER

2.7M W JCT STH 128 TO N, St. Croix, WI

Built 1958 Load: 48.6 t ADT: 17,800

STH 64

Over: BR WILLOW RIVER

3.6M E JCT STH 65 TO N, St. Croix, WI

Built 1941 Load: 50.2 t ADT: 8,200

LRD QUARRY RD

Over: KINNICKINNIC RIVER

0.5M S JCT STH 65, St. Croix, WI

Built 1976 Load: 16.2 t ADT: 270

LRD 220TH ST

Over: DRY RUN CREEK

0.5M S JCT CTH G, St. Croix, WI

Built 1929 Load: 17.8 t ADT: 93

LRD BOSTON RD (DEA

Over: FRENCH CREEK

0.7M E JCT CTH B, St. Croix, WI

Built 1983 Load: 19.4 t ADT: 30

LRD 10TH AVE

Over: FRENCH CREEK

0.9M W JCT CTH B, St. Croix, WI

Built 1950 Load: 19.4 t ADT: 110

CTH TT

Over: KINNICKINNIC RIVER

2.3M E JCT STH 65, St. Croix, WI

Built 1939 Load: 19.4 t ADT: 1,688

LRD 210TH AVE

Over: WILLOW RIVER

0.3M E JCT STH 46, St. Croix, WI

Built 1970 Load: 21.1 t ADT: 110

LRD BRIDGE ROAD

Over: CNW RR

0.1M S JCT USH 12, St. Croix, WI

Built 1971 Load: 21.1 t ADT: 250

LRD 250TH ST

Over: UNIONPACIFIC RR

0.3M S JCT USH 12, St. Croix, WI

Built 1970 Load: 21.1 t ADT: 372

LRD 250TH ST

Over: FRENCH CREEK

2.4M S JCT CTH N, St. Croix, WI

Built 1966 Load: 21.1 t ADT: 150

LRD 18TH AVE

Over: RUSH RIVER

0.1M W JCT CTH Y, St. Croix, WI

Built 1964 Load: 22.7 t ADT: 120

CTH W

Over: BR KINNICKINNIC RIVER

0.9M S JCT CTH J, St. Croix, WI

Built 1965 Load: 22.7 t ADT: 170

LRD 42ND AVE

Over: BR EAU GALLE RIVER

0.8M W JCT CTH B, St. Croix, WI

Built 1927 Load: 22.7 t ADT: 58

CTH NN

Over: LOUSY CREEK

2.3M S JCT CTH N, St. Croix, WI

Built 1982 Load: 24.3 t ADT: 132

LRD 200TH ST.

Over: WILLOW RIVER

1.0M N JCT STH 64, St. Croix, WI

Built 1986 Load: 24.3 t ADT: 115

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