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:

CANNONBALL PED

Over: USH 12/14/18/151

AT CANNONBALL PED, Dane, WI

Built 2013 ADT: 111,750

LRD SEMINOLE HIGHW

Over: USH 12/14/18/151

AT SEMINOLE HWY, Dane, WI

Built 2013 ADT: 118,000

MILITARY RIDGE PAT

Over: CTH PD, MCKEE RD

05460000000 004, Dane, WI

IH 39 SB / IH 90 E

Over: LRD LAKE DRIVE ROAD

1.0M E JCT USH 51, Dane, WI

Built 2018 ADT: 2,800

IH 39 NB / IH 90 W

Over: LRD LAKE DRIVE ROAD

1.1 MI E OF JCT WITH STH, Dane, WI

Built 2017 ADT: 2,800

USH 51/STH 73

Over: IH 39/90

AT JCT USH 51, Dane, WI

Built 2015 ADT: 60,100

LRD EDGERTON RD

Over: IH 39/90

AT EDGERTON RD, Dane, WI

Built 2015 ADT: 60,100

LRD CTH W (MAPLE G

Over: IH 39 NB/SB

6.2M N JCT STH 59, Dane, WI

Built 2016 ADT: 60,100

IH 39 SB

Over: USH 51

.2 M E OF CTH A, Dane, WI

Built 2016 ADT: 4,800

IH 39 NB / IH 90 W

Over: USH 51

5.8 MI E JCT WITH CTH N, Dane, WI

Built 2017 ADT: 4,800

CTH A

Over: IH 39/90

0.9M N JCT USH 51, Dane, WI

Built 2015 ADT: 57,800

IH 39 SB / IH 90 E

Over: LRD EAST CHURCH ROAD

1.0 MI E JCT E CHURCH RD, Dane, WI

Built 2016 ADT: 600

IH 39 NB / IH 90 W

Over: LRD EAST CHURCH ROAD

1.3 MI W OF JCT WITH STH, Dane, WI

Built 2017 ADT: 610

IH 39 SB / IH 90 E

Over: CTH B

1.6M W JCT STH 73, Dane, WI

Built 2019 ADT: 470

IH 39 NB / IH 90 W

Over: CTH B

1.6M W JCT STH 73, Dane, WI

Built 2018 ADT: 470

IH 39 SB / IH 90 E

Over: CTH W

0.9M N JCT CTH B, Dane, WI

Built 2019 ADT: 540

IH 39 NB / IH 90 W

Over: CTH W

0.9M N JCT CTH B, Dane, WI

Built 2018 ADT: 540

IH 39 SB / IH 90 E

Over: LRD DROTNING ROAD

0.6M E JCT CTH BN, Dane, WI

Built 2019 ADT: 100

IH 39 NB / IH 90 W

Over: LRD DROTNING ROAD

0.6M E JCT CTH BN, Dane, WI

Built 2018 ADT: 100

CTH BN

Over: IH 39

6.6 MI N US 51 RAMP, Dane, WI

Built 2016 ADT: 57,800

LRD CHURCH STREET

Over: IH 39

7 M N JCT USH 51, Dane, WI

Built 2016 ADT: 57,800

CTH N

Over: IH 39 / IH 90

9.1 MI N OF JCT WITH USH, Dane, WI

Built 2017 ADT: 57,150

LRD WILLIAMS DRIVE

Over: IH 39 / IH 90

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

Built 2016 ADT: 59,200

IH 39 SB / IH 90 E

Over: CTH MN

0.7M E JCT CTH AB, Dane, WI

Built 2019 ADT: 2,300

IH 39 NB / IH 90 W

Over: CTH MN

0.7M E JCT CTH AB, Dane, WI

Built 2018 ADT: 2,600

CTH AB

Over: IH 90 / IH 39

2.3M E JCT USH 12 TO E, Dane, WI

Built 2017 ADT: 59,200

IH 39/90 SB

Over: LRD SIGGLEKOW RD

SIGGLEKOW RD, Dane, WI

Built 2014 ADT: 1,600

IH 39 NB / IH 90 W

Over: LRD SIGGELKOW RD

0.4M W JCT CTH AB, Dane, WI

Built 2020 ADT: 1,400

IH I-39 NB/90 WB

Over: USH 12/18 EB

T. OF BLOOMING GROVE, Dane, WI

Built 2021 ADT: 46,300

IH I-39 NB / I-90

Over: USH 12/18 WB

T. OF BLOOMING GROVE, Dane, WI

Built 2021 ADT: 19,300

IH I-39 NB / I-90

Over: USH RAMP TO USH 12/18 WB

T. OF BLOOMING GROVE, Dane, WI

Built 2021 ADT: 10,000

IH I-39 NB / I-90

Over: LRD FEMRITE DRIVE

T. OF BLOOMING GROVE, Dane, WI

Built 2021 ADT: 3,300

USH 14 WB

Over: LRD BYRNE RD

0.8M W JCT CTH MM, Dane, WI

Built 2021 ADT: 200

USH 12/18 EB & WB

Over: STH 73

AT USH 12/18, Dane, WI

Built 2015 ADT: 3,500

USH 18 WB / USH 15

Over: CTH PD / MCKEE ROAD

0.9 MI W JCT S SEMINOLE H, Dane, WI

Built 2019 ADT: 27,200

USH 18 EB / USH 15

Over: CTH PD / MCKEE ROAD

0.9 MI W JCT S SEMINOLE H, Dane, WI

Built 2019 ADT: 28,250

LRD WILLIAMSBURG W

Over: USH 18/151 (VERONA ROAD)

0.6 M N JCT CTH PD/MCKEE, Dane, WI

Built 2019 ADT: 54,900

PEDESTRIAN BRIDGE

Over: LRD WALNUT ST NB & SB

AT BIKE PATH, Dane, WI

Built 2014 ADT: 1

CTH M/ SOUTH PLEAS

Over: CTH PD WB / MCKEE RD UND

150 FT NORTH OF JCT WITH, Dane, WI

Built 2019 ADT: 10,400

ICE AGE TRAIL

Over: CTH PD

2.3 MI W JCT WITH USH 151, Dane, WI

Built 2017 ADT: 13,500

BADGER STATE TRAIL

Over: CTH PD

AT BADGER STATE TRAIL, Dane, WI

Built 2020 ADT: 29,900

MILITARY RIDGE STA

Over: CTH CHT F / CAVE OF THE

0.2M N JCT USH 18, Dane, WI

Built 2015 ADT: 99

UNIVERSITY BAY DRI

Over: LRD UNIVERSITY BAY DRIVE

05070000000 004, Dane, WI

CTH AB

Over: USH 12/USH 18

2.0 MI E JCT IH 39/90, Dane, WI

Built 2023 ADT: 14,180

PEDESTRIAN WALKWAY

Over: USH 151-W WASHINGTON AVE

2.3M N JCT USH 12 TO E, Dane, WI

Built 1969 ADT: 18,250

CTH MS / UNIVERSIT

Over: LRD OLD MIDDLETON RD

3.2M E JCT USH 12, Dane, WI

Built 1934 ADT: 4,100

CNW RR

Over: LRD VIADUCT RD

0.5M E JCT STH 113, Dane, WI

Built 1896 ADT: 45

MILITARY RIDGE STA

Over: LRD FITCHRONA RD

2.9M N JCT CTH M, Dane, WI

Built 1984 ADT: 815

CNW RR

Over: LRD LOCUST GROVE RD

0.8M W JCT CTH MM, Dane, WI

Built 1916 ADT: 50

CNW RR

Over: CTH CC JEFFERSON ST

0.1M W JCT USH 14, Dane, WI

Built 1900 ADT: 740

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 6, 2026