Marathon County, WI

534 public highway bridges

Marathon County Bridge Snapshot

Marathon County, Wisconsin contains 534 public highway bridges in the FHWA National Bridge Inventory. Roughly 38% are rated “Good,” 37.3% “Fair,” 10.1% “Poor,” and 10.1% 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.

534
Total Bridges
38%
Good
10.1%
Poor
10.1%
Structurally Deficient

Condition Distribution

Good
38% (203)
Fair
37.3% (199)
Poor
10.1% (54)
SD
10.1% (54)

All Bridges (534)

LRD HUCKLEBERRY RD

Fair

Over: BIG EAU PLEINE RIVER

0.6M W JCT CTH F, Marathon, WI

Built 1982 Load: 34.0 t ADT: 130

LRD WOODLAND DRIVE

Fair

Over: LITTLE RIB RIVER

0.1M W JCT CTH O, Marathon, WI

Built 1984 Load: 34.0 t ADT: 223

LRD RAINBOW DR

Fair

Over: COUNTY LINE CREEK

2.7M E JCT CTH K, Marathon, WI

Built 1982 Load: 34.0 t ADT: 201

LRD BRIDGE ST

Fair

Over: CMSTPP RR

0.2M W JCT STH 52, Marathon, WI

Built 1987 Load: 34.0 t ADT: 27,748

LRD PINERY RD

Fair

Over: PLOVER RIVER

1.0M W JCT CTH Y, Marathon, WI

Built 1989 Load: 34.0 t ADT: 95

CTH W

Fair

Over: TRAPPE RIVER

2.9M N JCT CTH WW, Marathon, WI

Built 1992 Load: 34.0 t ADT: 1,906

LRD DRAPER RD

Fair

Over: E BR BIG EAUPLEINE RIVER

0.7M W JCT CTH F, Marathon, WI

Built 1992 Load: 34.0 t ADT: 90

CTH F

Fair

Over: BR LITTLE EAU PLEINE R

0.6M S JCT CTH C, Marathon, WI

Built 1968 Load: 34.0 t ADT: 376

LRD HOWLING PINES

Fair

Over: BIG SANDY CREEK

1.0M N JCT STH 52, Marathon, WI

Built 1929 Load: 34.0 t ADT: 50

CTH L

Fair

Over: BIG RIB RIVER

1.5M N JCT CTH H, Marathon, WI

Built 2011 Load: 35.3 t ADT: 641

STH 29 WB

Fair

Over: BIG RIB RIVER

0.7M W JCT STH 107, Marathon, WI

Built 1991 Load: 35.6 t ADT: 8,280

LRD SHADY LANE RD

Fair

Over: TRAPPE RIVER

0.1M N JCT CTH W, Marathon, WI

Built 1982 Load: 35.6 t ADT: 422

STH 29 WB

Fair

Over: PORKY CREEK

2.8M W JCT CTH F, Marathon, WI

Built 1982 Load: 35.6 t ADT: 5,600

CTH N

Fair

Over: SODA CREEK

0.6M W JCT CTH S, Marathon, WI

Built 1986 Load: 35.6 t ADT: 1,600

LRD ESKER RD

Fair

Over: PLOVER RIVER

1.2M W JCT CTH Y, Marathon, WI

Built 1992 Load: 35.6 t ADT: 50

LRD PORCUPINE RD

Fair

Over: TRAPPE RIVER

0.6M N JCT CTH G, Marathon, WI

Built 1993 Load: 35.6 t ADT: 55

LRD LITTLE TRAPPE

Fair

Over: LITTLE TRAPPE RIVER

0.8M W JCT CTH WW, Marathon, WI

Built 1993 Load: 35.6 t ADT: 55

USH STH 52-USH B51

Fair

Over: WISCONSIN RIVER 32

0.7M N JCT STH 52 TO E, Marathon, WI

Built 1997 Load: 35.6 t ADT: 27,244

USH B51-GRAND AVE

Fair

Over: EAU CLAIRE RIVER

0.6M N JCT STH 29 TO E, Marathon, WI

Built 1997 Load: 35.6 t ADT: 18,200

CTH H , 3RD ST

Fair

Over: SCOTCH CREEK

1.1M N JCT CTH N, Marathon, WI

Built 2000 Load: 35.6 t ADT: 3,450

STH 49

Fair

Over: LITTLE WOLF RIVER

0.1M N JCT CTH C, Marathon, WI

Built 1938 Load: 35.6 t ADT: 1,900

LRD CHASKI RD

Fair

Over: PLOVER RIVER

0.4M E JCT CTH Y, Marathon, WI

Built 1981 Load: 35.6 t ADT: 90

LRD N GAVIN AVE

Fair

Over: LITTLE EAU PLEINE RIVER

0.9M S JCT CTH C, Marathon, WI

Built 1962 Load: 35.6 t ADT: 68

LRD KRAUS ST

Fair

Over: BR LITTLE EAU PLEINE R

2.3M E JCT CTH M, Marathon, WI

Built 1965 Load: 35.6 t ADT: 50

CTH G

Fair

Over: TRAPPE RIVER

0.7M E JCT CTH J, Marathon, WI

Built 1964 Load: 36.6 t ADT: 143

CTH Y NB & SB

Fair

Over: EAU CLAIRE RIVER

1.6 MILES N OF JCT CTH Z, Marathon, WI

Built 2015 Load: 36.6 t ADT: 236

CTH X

Fair

Over: BULL JUNIOR CREEK

1.2M S JCT CTH XX, Marathon, WI

Built 1976 Load: 36.6 t ADT: 1,737

CTH S

Fair

Over: BIG RIB RIVER

0.1M S JCT CTH U TO E, Marathon, WI

Built 1954 Load: 37.3 t ADT: 302

STH 29

Fair

Over: FENWOOD CREEK

1.3M E JCT STH 97, Marathon, WI

Built 1957 Load: 37.3 t ADT: 13,700

CTH WW

Fair

Over: TRAPPE RIVER

4.2M N JCT CTH W, Marathon, WI

Built 1961 Load: 37.3 t ADT: 860

STH 29 EB

Fair

Over: BIG RIB RIVER

2.2M E JCT CTH S, Marathon, WI

Built 1992 Load: 37.3 t ADT: 16,800

LRD RIVER RUN RD

Fair

Over: LITTLE EAU PLINE RIVER

3.0M S JCT CTH C, Marathon, WI

Built 1984 Load: 37.3 t ADT: 100

LRD PROSPECT AVE

Fair

Over: CNW RR

0.1M E JCT USH B51, Marathon, WI

Built 1981 Load: 37.3 t ADT: 4,742

LRD BUS 51

Fair

Over: BULL JUNIOR CREEK

1.0M N JCT USH 153, Marathon, WI

Built 1984 Load: 37.3 t ADT: 5,728

STH 52 EB

Fair

Over: WISCONSIN RIVER 32

0.1M E JCT USH B51 TO N, Marathon, WI

Built 1996 Load: 37.3 t ADT: 20,739

CTH Y

Fair

Over: SKULEN POND CREEK

0.6M N JCT STH 52, Marathon, WI

Built 2003 Load: 37.3 t ADT: 147

LRD PLAZA RD

Fair

Over: BULL JUNIOR CREEK

2.3M W JCT CTH X, Marathon, WI

Built 2005 Load: 37.3 t ADT: 39

LRD CORLAD RD

Fair

Over: POTATO CREEK

1.1M N JCT CTH A, Marathon, WI

Built 1957 Load: 37.3 t ADT: 138

LRD PLOVER RIVER R

Fair

Over: PLOVER RIVER

1.4M W JCT CTH Y, Marathon, WI

Built 1980 Load: 37.3 t ADT: 188

LRD SILVER LEAF RD

Fair

Over: RANDALL CREEK

1.9M S JCT CTH A, Marathon, WI

Built 1930 Load: 37.3 t ADT: 81

LRD RANGELINE RD

Fair

Over: LITTLE EAU PLEINE RIVER

2.6M S JCT CTH C, Marathon, WI

Built 2023 Load: 37.9 t ADT: 270

STH 13

Fair

Over: LITTLE EAU PLEINE RIVER

3.0M N JCT STH 153, Marathon, WI

Built 1989 Load: 38.9 t ADT: 6,200

STH 13

Fair

Over: DILL CREEK

2.6M N JCT CTH P, Marathon, WI

Built 1989 Load: 38.9 t ADT: 8,100

CTH A

Fair

Over: W FK LITTLE RIB RIVER

0.5M E JCT STH 107, Marathon, WI

Built 1985 Load: 38.9 t ADT: 1,010

LRD STEWART AVE

Fair

Over: LITTLE RIB RIVER

2.1M E JCT STH 52, Marathon, WI

Built 1987 Load: 38.9 t ADT: 10,652

LRD HANSEN RD

Fair

Over: EAU CLAIRE RIVER

0.4M E JCT CTH Y, Marathon, WI

Built 1989 Load: 38.9 t ADT: 55

STH 49

Fair

Over: SPRANGER CREEK

2.2M N JCT STH 153, Marathon, WI

Built 1987 Load: 38.9 t ADT: 2,400

CTH S

Fair

Over: BR FREEMAN CREEK

0.2M N JCT STH 153, Marathon, WI

Built 1993 Load: 38.9 t ADT: 286

CTH O

Fair

Over: BIG EAU PLINE RESERVOIR

1.3M N JCT CTH C, Marathon, WI

Built 1999 Load: 38.9 t ADT: 949

CTH N

Fair

Over: RANDALL CREEK

2.7M W JCT CTH E, Marathon, WI

Built 2000 Load: 38.9 t ADT: 1,120

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