Marathon County, WI

534 public highway bridges

Marathon County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Marathon County, Wisconsin contains 534 public highway bridges. Roughly 38% are rated “Good,” 37.3% “Fair,” and 10.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

534

Total Bridges

38%

Good

37.3%

Fair

10.1%

Poor Condition

Condition Distribution

Good

38% (203)

Fair

37.3% (199)

Poor

10.1% (54)

All Bridges (534)

Sort:

USH 51NB

Over: STH 52

AT USH51, Marathon, WI

Built 2008 ADT: 17,800

USH 51 SB

Over: STH 52

0.8M S JCT STH 52, Marathon, WI

Built 2007 ADT: 17,800

USH 51 NB EXIT RAM

Over: LRD STEWET AVE

AT THE EXIT RAMP N USH51, Marathon, WI

Built 2010 ADT: 8,900

STH 29 EB

Over: LRD 28TH AVENUE

AT STH 29 EB, Marathon, WI

Built 2008 ADT: 13,700

STH 29 WB

Over: LRD 28TH AVENUE

AT STH 29 WB, Marathon, WI

Built 2008 ADT: 13,700

STH 29

Over: LRD SHERMAN ST

AT 29, Marathon, WI

Built 2008 ADT: 7,900

USH 51NB TO29WB

Over: USH51

AT INTERSECTION, Marathon, WI

Built 2008 ADT: 61,100

STH 29EB

Over: LRD RAMP TO STEWART AVEN

WAUSAU, Marathon, WI

Built 2007 ADT: 3,700

STH29EB TO USH 51N

Over: STH 29

AT INTERSECTION, Marathon, WI

Built 2010 ADT: 13,000

USH 51

Over: USH 51

AT X STH29, Marathon, WI

Built 2010 ADT: 56,000

STH 29 WB SYSTEM R

Over: STH 52

1.2M S, Marathon, WI

Built 2008 ADT: 17,800

USH RAMP USH51SB T

Over: USH RAMP STH 52 TO USH S

2.1M, Marathon, WI

Built 2008 ADT: 4,900

USH STH 29WB RAMP

Over: STH STEWART AVE.

AT STH 29WB SYSTEM RAMP, Marathon, WI

Built 2008 ADT: 7,400

STH 29 RAMP

Over: LRD 28TH AVE

AT 29 RAMP, Marathon, WI

Built 2008 ADT: 13,700

LRD BRIDGE ST

Over: USH 51

3.2M N, Marathon, WI

Built 2006 ADT: 38,600

STH 29WB

Over: STH RAMP TO STEWART AVE

WAUSAU, Marathon, WI

Built 2007 ADT: 3,800

STH 29 EB SYSTEM R

Over: LRD STEWART AVE

AT INTERSECTION, Marathon, WI

Built 2010 ADT: 8,900

USH 51 SB ENTRANCE

Over: LRD STEWART AVE

0.2 MI. N. JCT STH 52, Marathon, WI

Built 2007 ADT: 8,900

CTH Y

Over: STH 29

AT CTH Y, Marathon, WI

Built 2005 ADT: 13,000

IH 39 SB/USH 51

Over: USH BUS 51

0.2 MI S JCT IMPERIAL AVE, Marathon, WI

Built 2013 ADT: 14,100

LRD KOWALSKI RD

Over: IH 39

2.8M N STH153, Marathon, WI

Built 2008 ADT: 34,200

CTH O

Over: STH 29

3.33M E JCT STH 107, Marathon, WI

Built 2013 ADT: 20,700

LRD MAPLE RIDGE RD

Over: IH 39

2.0M N JCT STH 153 TO E, Marathon, WI

Built 2012 ADT: 29,800

LRD FOX GLOVE RD

Over: IH 39 NB

AT FOX GLOVE RD, Marathon, WI

Built 2011 ADT: 32,700

PEDESTRIAN BRIDGE

Over: STH 29 EB

BETWEEN CTH X - ALDEERSON, Marathon, WI

Built 2011 ADT: 26,000

CTH U

Over: USH 51 NB

AT CTH U, Marathon, WI

Built 2013 ADT: 32,400

PEDESTRIAN

Over: LRD AT MCLENNAN ST

0.1M N JCT STH 52, Marathon, WI

Built 1975 ADT: 2,000

SOO LINE

Over: LRD MCMILLAN ST

0.1M W JCT STH 13, Marathon, WI

Built 1930 ADT: 1,050

LRD FAIRVIEW RD

Over: ROCKY RUN

0.1M W JCT CTH H, Marathon, WI

Built 1971 Load: 8.1 t ADT: 55

CTH C

Over: W BR LT EAU PLEINE RIVER

0.8M W JCT CTH F, Marathon, WI

Built 1930 Load: 16.2 t ADT: 1,465

CTH J

Over: EAU CLAIRE RIVER

0.3M N JCT STH 29, Marathon, WI

Built 1955 Load: 17.8 t ADT: 1,441

CTH N

Over: BIG SANDY CREEK

0.5M W JCT CTH SS, Marathon, WI

Built 1959 Load: 17.8 t ADT: 4,000

CTH Z

Over: BIG SANDY CREEK

1.2M E JCT CTH J, Marathon, WI

Built 1962 Load: 17.8 t ADT: 1,250

LRD CORLAD RD

Over: RANDALL CREEK

1.6M N JCT STH 29, Marathon, WI

Built 1927 Load: 17.8 t ADT: 113

LRD E MC MILLAN RD

Over: SQUAW CREEK

1.7M W JCT CTH T, Marathon, WI

Built 1958 Load: 17.8 t ADT: 112

CTH M

Over: LITTLE EAU PLEINE RIVER

2.4M S JCT CTH C, Marathon, WI

Built 1961 Load: 19.4 t ADT: 1,720

USH 51 NB

Over: COUNTY LINE CREEK

5.6M N JCT CTH WW TO E, Marathon, WI

Built 1974 Load: 19.4 t ADT: 10,300

LRD SUGAR BUSH RD

Over: FREEMAN CREEK

1.2M E JCT CTH S, Marathon, WI

Built 1986 Load: 19.4 t ADT: 95

LRD W BEAR LAKE RD

Over: SPRING BROOK

1.8M E JCT CTH Y, Marathon, WI

Built 1967 Load: 19.4 t ADT: 50

LRD NEHRBASS RD

Over: BR BLACK CREEK

0.3M S JCT CTH A, Marathon, WI

Built 1946 Load: 19.4 t ADT: 42

LRD ROSEDALE AVE

Over: W BR BIG EAU PLEINE RIVE

1.9M N JCT STH 29, Marathon, WI

Built 1936 Load: 19.4 t ADT: 90

LRD MERIDIAN RD

Over: BLACK CREEK

1.8M N JCT CTH U, Marathon, WI

Built 1940 Load: 19.4 t ADT: 126

LRD CHOKECHERRY RD

Over: DILL CREEK

1.7M E JCT STH 13, Marathon, WI

Built 1955 Load: 19.4 t ADT: 92

LRD CORLAD RD

Over: BLACK CREEK

1.8M S JCT STH 97, Marathon, WI

Built 1982 Load: 21.1 t ADT: 25

LRD CEMETARY RD

Over: PORKY CREEK

0.1M N JCT STH 29, Marathon, WI

Built 1967 Load: 21.1 t ADT: 30

STH 97

Over: LITTLE EAU PLEINE RIVER

0.1M N JCT CTH T, Marathon, WI

Built 1966 Load: 22.7 t ADT: 7,600

CTH C

Over: JOHNSON CREEK

1.1M W JCT CTH X, Marathon, WI

Built 1969 Load: 22.7 t ADT: 493

CTH X

Over: JOHNSON CREEK

1.7M N JCT CTH C, Marathon, WI

Built 1969 Load: 22.7 t ADT: 873

CTH O

Over: LITTLE RIB RIVER

1.9M N JCT CTH U, Marathon, WI

Built 1970 Load: 22.7 t ADT: 1,250

LRD TOWN LINE RD

Over: MARSH CREEK

1.2M S JCT STH 29, Marathon, WI

Built 1941 Load: 22.7 t ADT: 90

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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Compiled by PlainBridges, Independent data publisher

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.