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:

STH 29 WB

Over: USH 51 BUS

2.9M N JCT USH 51, Marathon, WI

Built 1971 ADT: 18,400

LRD VOLKMAN STREET

Over: STH 29

0.5M E JCT USH 51 BUS, Marathon, WI

Built 1989 ADT: 28,400

LRD ALDERSON ST

Over: STH 29

1.5M E JCT USH 51 BUS, Marathon, WI

Built 1989 ADT: 28,400

STH 153-MAIN ST

Over: LRD DEPOT ST

0.4M N JCT STH 153, Marathon, WI

Built 1963 ADT: 20

LRD SUNRISE LN

Over: STH 29

1.1M E JCT USH 51 TO S, Marathon, WI

Built 1972 ADT: 42,300

STH 107

Over: STH 29

3.0M E JCT CTH S, Marathon, WI

Built 1992 ADT: 16,800

STH 29 EB

Over: LRD 72ND AVE

2.7M S JCT CTH U, Marathon, WI

Built 1971 ADT: 7,400

STH 29 EB

Over: LRD 48TH AVE

1.8M W JCT STH 52, Marathon, WI

Built 1971 ADT: 1,000

STH 29 WB

Over: LRD 48TH AVE

1.8M W JCT STH 52, Marathon, WI

Built 1971 ADT: 1,000

STH 29 WB

Over: LRD 72ND AVE

2.7M S JCT CTH U, Marathon, WI

Built 1971 ADT: 8,700

STH 29 EB

Over: USH 51 BUS

2.9M N JCT USH 51, Marathon, WI

Built 1971 ADT: 18,400

CTH C

Over: IH USH 51-IH 39

3.1M N JCT CTH DB TO E, Marathon, WI

Built 1972 ADT: 22,697

STH 34

Over: IH USH 51-IH 39

4.5M N JCT CTH DB TO E, Marathon, WI

Built 1972 ADT: 29,500

LRD LOCKER RD

Over: IH USH 51-IH 39

1.1M N JCT STH 34 TO S, Marathon, WI

Built 1972 ADT: 29,500

IH USH 51-IH 39 SB

Over: STH 153

1.4M E JCT CTH B, Marathon, WI

Built 1973 ADT: 10,300

IH USH 51-IH 39 NB

Over: STH 153

1.4M E JCT CTH B, Marathon, WI

Built 1972 ADT: 10,300

USH 51 NB

Over: USH B51 SB

0.4M S JCT USH 51, Marathon, WI

Built 1975 ADT: 10,500

USH 51 SB

Over: USH B51 SB & EBCTH K

0.4M S JCT USH 51, Marathon, WI

Built 1975 ADT: 10,500

USH 51 NB

Over: LRD DECATOR DR

0.5M W JCT CTH K, Marathon, WI

Built 1975 ADT: 380

USH 51 SB

Over: LRD DECATOR DR

0.5M W JCT CTH K, Marathon, WI

Built 1975 ADT: 2,100

LRD FALCON DR

Over: USH 51

4.3M N JCT STH 29 TO W, Marathon, WI

Built 1974 ADT: 20,900

USH 51 NB

Over: CTH WW

1.1M W JCT CTH K, Marathon, WI

Built 1974 ADT: 2,000

USH 51 SB

Over: CTH WW

1.1M W JCT CTH K, Marathon, WI

Built 1974 ADT: 2,000

USH 51 NB

Over: LRD MAINE DR

2.9M W JCT CTH K, Marathon, WI

Built 1974 ADT: 100

USH 51 SB

Over: LRD MAINE DR

2.9M W JCT CTH K, Marathon, WI

Built 1974 ADT: 100

USH 51 NB

Over: LRD RAINBOW DR

2.9M W JCT CTH K, Marathon, WI

Built 1974 ADT: 250

USH 51 SB

Over: LRD RAINBOW DR

2.9M W JCT CTH K, Marathon, WI

Built 1974 ADT: 250

WCL RR

Over: USH B51-GRAND AVE

0.1M N JCT STH 29 TO E, Marathon, WI

Built 1978 ADT: 16,800

CTH X

Over: STH 29

2.5M E JCT USH 51 BUS, Marathon, WI

Built 1989 ADT: 15,800

LRD RYAN ST

Over: STH 29

4.0M E JCT USH 51 BUS, Marathon, WI

Built 1989 ADT: 15,800

STH 29 EB

Over: CTH J

0.8M S JCT CTH JJ, Marathon, WI

Built 1990 ADT: 4,700

STH 29 WB

Over: CTH J

0.8M S JCT CTH JJ, Marathon, WI

Built 1990 ADT: 4,750

STH 29 EB

Over: CTH Q

0.4M S JCT CTH JJ, Marathon, WI

Built 1990 ADT: 980

STH 29 WB

Over: CTH Q

0.3M S JCT CTH JJ, Marathon, WI

Built 1990 ADT: 980

LRD MAPLE ROAD

Over: STH 29 EB & WB

0.9M E JCT STH 13, Marathon, WI

Built 1998 ADT: 9,200

STH 97

Over: STH 29 EB

3.0 M E JCT CTH E, Marathon, WI

Built 1999 ADT: 17,300

CTH H

Over: STH 29

5.7M E JCT STH 97, Marathon, WI

Built 1997 ADT: 17,300

STH 29 EB

Over: STH 13

1.5M N JCT CTH N, Marathon, WI

Built 1998 ADT: 10,700

STH 29 WB

Over: STH 13

1.6M N JCT CTH N, Marathon, WI

Built 1998 ADT: 10,700

USH SB USH 51 ON R

Over: USH 51 NB

AT 29, Marathon, WI

Built 2006 ADT: 31,400

STH EB STH29

Over: STH 29

AT INTERSECTION, Marathon, WI

Built 2006 ADT: 4,500

STH 29 EB

Over: USH 51

AT STH29, Marathon, WI

Built 2006 ADT: 62,800

USH 51NB/STH 29

Over: CTH N

AT USH51, Marathon, WI

Built 2005 ADT: 19,100

USH 51SB/STH 29

Over: CTH N

AT USH51, Marathon, WI

Built 2005 ADT: 20,000

LRD ROBIN LANE

Over: IH39/USH51

0.4 MI. N JCT CTH N, Marathon, WI

Built 2005 ADT: 61,100

CTH NN

Over: USH 51 NB-STH29

0.3 MI N. CTH N, Marathon, WI

Built 2006 ADT: 30,550

USH 51 NB

Over: LRD SHERMAN ST

AT USH51, Marathon, WI

Built 2007 ADT: 10,000

USH 51SB

Over: LRD SHERMAN AVE

AT USH51, Marathon, WI

Built 2007 ADT: 10,000

USH 51NB

Over: LRD STEWART AVE

AT USH51NB, Marathon, WI

Built 2009 ADT: 8,900

USH 51 SB

Over: LRD STEWART AVE

AT 51SB, Marathon, WI

Built 2007 ADT: 8,900

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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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.