Dane County, WI

624 public highway bridges

Dane County Bridge Snapshot

Dane County, Wisconsin contains 624 public highway bridges in the FHWA National Bridge Inventory. Roughly 30% are rated “Good,” 22.9% “Fair,” 5.6% “Poor,” and 5.6% 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.

624

Total Bridges

30%

Good

5.6%

Poor

5.6%

Structurally Deficient

Condition Distribution

Good

30% (187)

Fair

22.9% (143)

Poor

5.6% (35)

SD

5.6% (35)

All Bridges (624)

Sort:

USH 14 WB

Over: CTH MM

1.4M S JCT CTH B, Dane, WI

Built 1978 ADT: 14,400

USH 14 EB

Over: CTH MM

1.4M S JCT CTH B, Dane, WI

Built 1978 ADT: 14,400

USH 14 EB

Over: LRD BYRNE RD

0.8M W JCT CTH MM, Dane, WI

Built 1969 ADT: 257

USH 14 WB

Over: LRD IRISH LANE

0.7M W JCT CTH MM, Dane, WI

Built 1969 ADT: 850

USH 14 EB

Over: LRD IRISH LANE

0.7M W JCT CTH MM, Dane, WI

Built 1969 ADT: 850

LRD HAIGHT FARM RD

Over: USH 14

2.7M E JCT USH 12 TO E, Dane, WI

Built 1969 ADT: 22,200

USH 14 WB

Over: LRD MCCOY RD

0.1M W JCT CTH MM, Dane, WI

Built 1969 ADT: 6,900

USH 14 EB

Over: LRD MCCOY RD

0.1M W JCT CTH MM, Dane, WI

Built 1969 ADT: 6,900

LRD WILLIAMS POINT

Over: LRD PARK RD

2.5M S JCT CTH MM, Dane, WI

Built 1967 ADT: 15

USH 12/14/18/151

Over: LRD TODD DR

AT JCT WITH USH 12, Dane, WI

Built 1971 ADT: 12,222

LRD CAMPUS DR

Over: LRD WALNUT ST

1.7M W JCT USH 151, Dane, WI

Built 1968 ADT: 7,250

LRD CAMPUS DR

Over: LRD HIGHLAND AVE

1.9M W JCT USH 151, Dane, WI

Built 1968 ADT: 9,950

USH 151 NB

Over: LRD MAIN ST

1.0M S JCT STH 19, Dane, WI

Built 1969 ADT: 14,100

USH 151 SB

Over: LRD MAIN ST

1.0M S JCT STH 19, Dane, WI

Built 1969 ADT: 14,100

USH 151 NB

Over: STH 19-WINDSOR ST

1.5M E JCT CTH C, Dane, WI

Built 1969 ADT: 14,800

USH 151 SB

Over: STH 19-WINDSOR ST

1.5M E JCT CTH C, Dane, WI

Built 1969 ADT: 14,800

USH 151 NB

Over: CTH N BRISTOL ST

0.6M N JCT STH 19, Dane, WI

Built 1970 ADT: 13,700

USH 151 SB

Over: CTH N/BRISTOL ST

0.6M N JCT STH 19, Dane, WI

Built 1970 ADT: 13,700

LRD BIRD ST

Over: USH 151

0.6M N JCT STH 19 TO E, Dane, WI

Built 1969 ADT: 35,800

USH 151 NB

Over: LRD COLUMBUS ST

1.5M N JCT STH 19, Dane, WI

Built 1970 ADT: 4,600

USH 151 SB

Over: LRD COLUMBUS ST

1.5M N JCT STH 19, Dane, WI

Built 1970 ADT: 4,600

USH 151 NB

Over: CTH VV (TWIN LANE RD)

TOWN OF BRISTOL, Dane, WI

Built 1990 ADT: 800

USH 151 SB

Over: CTH VV

2.0M S JCT CTH V, Dane, WI

Built 1991 ADT: 880

CTH VV (ELDER LANE

Over: USH 151

2.2M N JCT CTH N, Dane, WI

Built 1991 ADT: 25,600

CTH V

Over: USH 151

2.4M N JCT CTH VV, Dane, WI

Built 1991 ADT: 24,700

IH 90 WB-IH 94 WB

Over: CTH T

1.0M E JCT STH 30, Dane, WI

Built 1997 ADT: 5,800

LRD DEANSVILLE RD

Over: USH 151

2.0M N JCT CTH V, Dane, WI

Built 1991 ADT: 24,500

USH 51 NB

Over: STH 19

1.0M E JCT IH 90 TO W, Dane, WI

Built 1971 ADT: 14,300

USH 51 SB

Over: STH 19

1.0M E JCT IH 90 TO W, Dane, WI

Built 1971 ADT: 14,300

USH 18 WB-USH 151

Over: LRD SAND ROCK RD

2.1M N JCT CTH JG, Dane, WI

Built 1984 ADT: 251

USH 18 EB/151 NB

Over: LRD SAND ROCK RD

2.1M N JCT CTH JG, Dane, WI

Built 1988 ADT: 251

CTH JG

Over: USH 18-USH 151

1.5M E JCT STH 78, Dane, WI

Built 1984 ADT: 18,000

USH 18 WB-USH 151

Over: STH 92

1.5M E JCT STH 78, Dane, WI

Built 1984 ADT: 1,800

USH 18 EB-USH 151

Over: STH 92

1.5M E JCT STH 78, Dane, WI

Built 1988 ADT: 1,800

CTH ID

Over: USH 18-USH 151

0.9M E JCT STH 92, Dane, WI

Built 1984 ADT: 20,700

STH 78

Over: USH 18-USH 151

0.6M E JCT CTH E TO S, Dane, WI

Built 1984 ADT: 17,800

IH 39 SB/IH 90 EB

Over: STH 30 WB

0.4M W JCT IH 94 TO W, Dane, WI

Built 1997 ADT: 20,950

IH 39 NB/90 WB

Over: IH RAMP IH 94 WB TO IH 9

0.2M W JCT IH 94 TO W, Dane, WI

Built 1997 ADT: 10,400

IH 90 WB

Over: STH 30 EB

1.9M E JCT USH 51 TO N, Dane, WI

Built 1997 ADT: 6,200

CTH MM - RIMROCK R

Over: USH 12/18-W BELTLINE

0.8M E JCT USH 151 TO N, Dane, WI

Built 1988 ADT: 120,000

LRD SOUTH TOWNE DR

Over: USH 12/18-S BELTLINE

0.8M E JCT CTH MC, Dane, WI

Built 1988 ADT: 127,500

USH 12/18 EB-S BEL

Over: CTH BB MONONA DR

0.5M S JCT BROADWAY ST, Dane, WI

Built 1988 ADT: 21,800

USH 12/18 WB-S BEL

Over: CTH BB MONONA DR

0.5M S JCT BROADWAY ST, Dane, WI

Built 1988 ADT: 21,800

USH 12 WB-USH 18 W

Over: USH 51

2.4M N JCT CTH MN, Dane, WI

Built 1988 ADT: 48,700

USH 12 EB-USH 18 E

Over: USH 51

2.3M N JCT CTH MN, Dane, WI

Built 1988 ADT: 48,700

STH 30 WB

Over: USH 51-STOUGHTON RD

4.2M N JCT USH 12 TO E, Dane, WI

Built 1996 ADT: 48,300

STH 30 EB

Over: USH 51-STOUGHTON RD

4.2M N JCT USH 12 TO E, Dane, WI

Built 1996 ADT: 27,250

USH 51 SB

Over: LRD MILWAUKEE ST

CITY OF MADISON, Dane, WI

Built 1996 ADT: 11,500

USH 51 NB

Over: LRD MILWAUKEE ST

CITY OF MADISON, Dane, WI

Built 1996 ADT: 11,500

IH 90 EB

Over: STH 30 EB

1.8M E JCT USH 51 TO N, Dane, WI

Built 1997 ADT: 23,300

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