Jefferson County, WI

186 public highway bridges

Jefferson County Bridge Snapshot

Jefferson County, Wisconsin contains 186 public highway bridges in the FHWA National Bridge Inventory. Roughly 31.2% are rated “Good,” 25.3% “Fair,” 4.8% “Poor,” and 4.8% 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.

186

Total Bridges

31.2%

Good

4.8%

Poor

4.8%

Structurally Deficient

Condition Distribution

Good

31.2% (58)

Fair

25.3% (47)

Poor

4.8% (9)

SD

4.8% (9)

All Bridges (186)

Sort:

IH 94 EB

Over: LRD UNION ST

1.1M W JCT STH 26, Jefferson, WI

Built 1958 ADT: 1,200

IH 94 WB

Over: LRD UNION ST

1.1M W JCT STH 26, Jefferson, WI

Built 1958 ADT: 1,200

STH 16 EB

Over: STH 19 WB

0.2M W JCT STH 16, Jefferson, WI

Built 1960 ADT: 2,100

CMSTPP RR

Over: LRD CHURCH ST

1.2M N JCT CTH Y TO E, Jefferson, WI

Built 1961 ADT: 17,240

CTH X

Over: IH 94

2.7M E JCT STH 26 TO N, Jefferson, WI

Built 1964 ADT: 42,800

LRD SWITZKE RD (DE

Over: IH 94

1.8M E JCT STH 26 TO N, Jefferson, WI

Built 1964 ADT: 42,800

CTH D

Over: IH 94

4.5M E JCT STH 26 TO N, Jefferson, WI

Built 1964 ADT: 42,800

IH 94 EB

Over: CTH P

0.6M N JCT CTH B, Jefferson, WI

Built 1964 ADT: 402

IH 94 WB

Over: CTH P

0.6M N JCT CTH B, Jefferson, WI

Built 1964 ADT: 402

IH 94 EB

Over: LRD HILLSIDE RD

0.7M N JCT CTH B, Jefferson, WI

Built 1964 ADT: 95

CTH O

Over: IH 94

3.9M E JCT STH 73 TO N, Jefferson, WI

Built 1964 ADT: 38,300

LRD AIRPORT RD

Over: IH 94

5.2M E JCT STH 73 TO N, Jefferson, WI

Built 1964 ADT: 38,300

IH 94 EB

Over: LRD NEWVILLE RD

1.2M N JCT CTH B, Jefferson, WI

Built 1964 ADT: 260

IH 94 WB

Over: LRD NEWVILLE RD

1.2M N JCT CTH B, Jefferson, WI

Built 1965 ADT: 260

IH 94 EB

Over: LRD ROCK LAKE RD

0.2M N JCT CTH B, Jefferson, WI

Built 1964 ADT: 603

IH 94 WB

Over: LRD ROCK LAKE RD

0.2M N JCT CTH B, Jefferson, WI

Built 1965 ADT: 603

STH 89

Over: IH 94

9.2M E JCT STH 73 TO N, Jefferson, WI

Built 1964 ADT: 38,300

CTH A

Over: IH 94

0.9M E JCT STH 89 TO N, Jefferson, WI

Built 1965 ADT: 37,700

LRD ZIEBELL RD

Over: IH 94

4.0M E JCT STH 89 TO N, Jefferson, WI

Built 1964 ADT: 37,700

CTH N

Over: IH 94

5.5M E JCT STH 89 TO N, Jefferson, WI

Built 1964 ADT: 37,700

CTH E

Over: IH 94

8.0M E JCT STH 26 TO N, Jefferson, WI

Built 1964 ADT: 41,900

CTH F

Over: IH 94

9.3M E JCT STH 26 TO N, Jefferson, WI

Built 1963 ADT: 49,200

IH 94 EB

Over: LRD WILLOW GLEN RD

0.3M S JCT CTH B, Jefferson, WI

Built 1963 ADT: 1,300

IH 94 WB

Over: LRD WILLOW GLEN RD

0.3M S JCT CTH B, Jefferson, WI

Built 1963 ADT: 1,300

STH 26 NB

Over: LRD BLACKHAWK ISLAND ROA

1.6M W JCT STH 106, Jefferson, WI

Built 1994 ADT: 99

STH B26

Over: STH 26

4.9M N JCT CTH N, Jefferson, WI

Built 1994 ADT: 12,900

STH 26 NB

Over: STH 106

0.8M E JCT CTH J TO N, Jefferson, WI

Built 1995 ADT: 2,000

STH NB STH 26

Over: USH 12

8.2M E JCT STH 134, Jefferson, WI

Built 1994 ADT: 13,400

STH 89

Over: STH 26

1.7M N JCT USH 12 TO E, Jefferson, WI

Built 1995 ADT: 12,700

LRD SKI SLIDE RD

Over: STH 16

AT SKI SLIDE RD, Jefferson, WI

Built 2005 ADT: 6,100

LRD WISCONSIN AVEN

Over: STH 16

AT SKI SLIDE RD, Jefferson, WI

Built 2005 ADT: 6,100

STH 16

Over: CTH CW

CITY OF WATERTOWN, Jefferson, WI

Built 1999 ADT: 4,300

IH EB IH 94

Over: STH 26

0.8M N JCT CTH B, Jefferson, WI

Built 2001 ADT: 99

IH WB IH 94

Over: STH 26

0.8M N JCT CTH B, Jefferson, WI

Built 2002 ADT: 99

IH EB IH 94

Over: LRD WATERTOWN STREET

0.5M S OF JCT RIVER DR, Jefferson, WI

Built 2001 ADT: 99

IH WB IH 94

Over: LRD WATERTOWN ST

0.5M S OF JCT RIVER DR, Jefferson, WI

Built 2002 ADT: 99

LRD POND RD

Over: STH 26

AT POND RD, Jefferson, WI

Built 2014 ADT: 12,900

LRD WHITETAIL LANE

Over: STH 26

0.8 MI. S OF BUS. 26, Jefferson, WI

Built 2013 ADT: 12,900

STH 26 SB

Over: LRD BLACKHAWK ISLAND ROA

1.6M W JCT STH 106, Jefferson, WI

Built 2011 ADT: 1

STH 26 SB

Over: STH 106

AT INTERSECTION, Jefferson, WI

Built 2011 ADT: 2,000

STH 26 SB

Over: USH 12

AT INTERSECTION, Jefferson, WI

Built 2011 ADT: 11,500

LRD HOARD RD

Over: STH 26

AT INTERSECTION, Jefferson, WI

Built 2011 ADT: 12,700

LRD BANKER ROAD

Over: STH 26

AT INTERSECTION, Jefferson, WI

Built 2011 ADT: 12,700

STH 26 NB

Over: LRD N HIGH STREET (CTH K

AT INTERSECTION, Jefferson, WI

Built 2010 ADT: 3,500

STH 26 SB

Over: LRD N HIGH STREET (CTH K

AT INTERSECTION, Jefferson, WI

Built 2010 ADT: 3,500

STH 26 NB

Over: LRD BUS STH 26

AT INTERSECTION, Jefferson, WI

Built 2010 ADT: 10,000

STH 26 SB

Over: LRD S MAIN STREET

AT INTERSECTION, Jefferson, WI

Built 2010 ADT: 10,000

CTH W

Over: STH 26

AT INTERSECTION, Jefferson, WI

Built 2010 ADT: 13,000

CTH J

Over: STH 26

AT INTERSECTION, Jefferson, WI

Built 2010 ADT: 13,000

STH 26 NB

Over: USH 18

AT INTERSECTION, Jefferson, WI

Built 2010 ADT: 7,400

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