County profile · official public datasets

Juneau County, WI

172 public highway bridges tracked in the FHWA National Bridge Inventory: 49.4% rated Good, 47.7% Fair, 2.9% Poor.

172
Public bridges
49.4%
Good condition
2.9%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Juneau County posts a top-10% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 8%
lowest Poor share in state
2.9%
Poor-condition share
172
public highway bridges
1981
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Juneau County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Juneau County ranks #6 of 72 Wisconsin counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.9%). Juneau County, Wisconsin contains 172 public highway bridges. Roughly 49.4% are rated “Good,” 47.7% “Fair,” and 2.9% “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.

Total bridges

172

Public highway bridges in Juneau County

Good condition

49.4%

85 of 172 rated 7-9

Fair condition

47.7%

82 of 172 rated 5-6

Poor condition

2.9%

5 of 172 rated 4 or below

In-state Poor-share rank

#6 of 72

Among Wisconsin counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 172 NBI-tracked bridges by lowest applicable component rating.

Good
49.4% (85)
Fair
47.7% (82)
Poor
2.9% (5)

Juneau County's Poor-condition bridges carry 2,343 vehicle crossings a day

That is 0.4% of the county's reported daily bridge traffic on 2.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 469 crossings a day against 2,956 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 172 of 172 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

41.9% of Juneau County's bridges have passed the 50-year mark

72 of the 172 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 49.4% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 44.2% of the county's Poor-condition bridge traffic

CTH O over TRIBUTARY BARABOO RIVER, built 1925, carries 1,035 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 5-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,343 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Juneau County's bridges were built

172 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 45 of the county's bridges still in the inventory were built, which is 26.2% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1981) matches the Wisconsin average (1984).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Juneau County compares with Wisconsin's closest counties by inventory size

The 5 Wisconsin counties nearest Juneau County in number of bridges, with their condition splits. Its 2.9% Poor share is the 2nd-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1987 is 6 years older.

Showing the 5 closest of 71 Wisconsin counties eligible for comparison.

Bridge inventory size and condition shares for Juneau County and the 5 Wisconsin counties closest to it in inventory size
County Bridges Poor
Jefferson County 182 5.5%
Portage County 182 2.7%
Taylor County 176 11.4%
Juneau County (this page) 172 2.9%
Waupaca County 169 3%
Washington County 162 8.6%

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Juneau County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Juneau County, both outside Wisconsin so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside WI (172 bridges here).

Similar average build year

Nearest mean year-built outside WI (1981 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 172 Good 85 Fair 82 Poor 5

Good-condition bridges (85)

LRD 6TH AVE

Good

Over: IH 90-IH 94

0.7MI N JCT USH12/STH16, Juneau, WI

Built 1964 Load: 9.7 t ADT: 470

LRD 23RD ST

Good

Over: BR LITTLE YELLOW RIVER

4.6M W JCT STH 80, Juneau, WI

Built 1971 Load: 9.7 t ADT: 47

LRD MEYER RD

Good

Over: IH 90-IH 94

2.5M W JCT CTH Q, Juneau, WI

Built 1964 Load: 19.4 t ADT: 120

STH 80-E BRIDGE ST

Good

Over: IH 90-IH 94

1.0M N JCT USH 12 TO W, Juneau, WI

Built 1964 Load: 21.1 t ADT: 3,300

LRD TOWN LINE RD

Good

Over: ONE MILE CREEK

0.4M E JCT STH 58, Juneau, WI

Built 1971 Load: 22.7 t ADT: 95

LRD SPRAGUE MATHER

Good

Over: BEAVER CREEK

0.7M E JCT CTH H, Juneau, WI

Built 1973 Load: 27.5 t ADT: 80

STH 80

Good

Over: LITTLE YELLOW RIVER

2.2M N JCT CTH A, Juneau, WI

Built 1980 Load: 29.2 t ADT: 1,700

LRD MONROE ST (DEA

Good

Over: LEMONWEIR RIVER

0.2M W JCT HY 58, Juneau, WI

Built 1969 Load: 29.2 t ADT: 950

LRD 23RD ST

Good

Over: LITTLE YELLOW RIVER

4.3M W JCT STH 80, Juneau, WI

Built 1971 Load: 29.2 t ADT: 86

CTH H

Good

Over: BR SHERMAN CREEK

0.9M W JCT STH 80, Juneau, WI

Built 2004 Load: 30.8 t ADT: 274

LRD 1ST AVE SOUTH

Good

Over: BEAR CREEK

2.1M W JCT CTH H, Juneau, WI

Built 1965 Load: 30.8 t ADT: 47

IH 90 WB-IH 94 WB

Good

Over: SEVEN MILE CREEK

6.8M W JCT CTH HH TO N, Juneau, WI

Built 1964 Load: 32.4 t ADT: 17,350

STH 82

Good

Over: CLEAVER CREEK

1.0M E JCT STH 80 TO N, Juneau, WI

Built 1986 Load: 32.4 t ADT: 3,500

STH 82

Good

Over: TRIB CLEAVER CREEK

1.6M E JCT STH 80 TO N, Juneau, WI

Built 1986 Load: 32.4 t ADT: 3,500

CTH A

Good

Over: FOUNTAIN CREEK

0.5M E JCT CTH H, Juneau, WI

Built 1987 Load: 32.4 t ADT: 890

STH 58-STH 82-UNIO

Good

Over: LEMONWEIR RIVER

0.1M N JCT USH 12 TO E, Juneau, WI

Built 1987 Load: 32.4 t ADT: 1,600

STH 58

Good

Over: LITTLE YELLOW RIVER

0.8M N JCT CTH A, Juneau, WI

Built 1990 Load: 32.4 t ADT: 3,800

LRD 7TH AVE

Good

Over: DANIELSON LATERAL

6.1M W JCT STH 80, Juneau, WI

Built 1991 Load: 32.4 t ADT: 23

STH 33-STATE BIKE

Good

Over: DRAINAGE WAY

0.1M W OF E JCT CTH G, Juneau, WI

Built 2002 Load: 32.4 t ADT: 2,700

CTH H

Good

Over: CTH C/CPRS RR

0.1 MI S. JCT USH 12, Juneau, WI

Built 2004 Load: 32.4 t ADT: 1,779

STH 80

Good

Over: WEBSTER CR

0.2M S CTH B, Juneau, WI

Built 2005 Load: 32.4 t ADT: 1,600

CTH F

Good

Over: OVERFLOW OF YELLOW RIVER

0.1 MI W OF 11TH AVE, Juneau, WI

Built 2011 Load: 32.4 t ADT: 114

LRD WRIGHT STREET

Good

Over: LYNDON CREEK

0.1 MI E JCT CTH HH, Juneau, WI

Built 2011 Load: 32.4 t ADT: 25

CTH B

Good

Over: WEBSTER CREEK

0.1 MI E JCT STH 80, Juneau, WI

Built 2012 Load: 32.4 t ADT: 574

CTH O

Good

Over: STEWART CREEK

1 MI W JCT STH 58, Juneau, WI

Built 2022 Load: 32.4 t ADT: 540

LRD 32ND ST WEST

Good

Over: LITTLE YELLOW RIVER

1.5M W JCT STH 80, Juneau, WI

Built 1983 Load: 32.4 t ADT: 130

LRD PETROWITZ RD

Good

Over: STEWARTS CREEK

0.1M N JCT CTH O, Juneau, WI

Built 2006 Load: 32.4 t ADT: 143

IH 90 EB-IH 94 EB

Good

Over: STH 82

7.7M E JCT STH 80 TO N, Juneau, WI

Built 2022 Load: 33.4 t ADT: 18,375

IH 90 WB-IH 94 WB

Good

Over: STH 82

10.0M W JCT CTH HH TO N, Juneau, WI

Built 2022 Load: 33.4 t ADT: 18,375

STH 80/82

Good

Over: BARABOO RIVER

0.2M N JCT STH71, Juneau, WI

Built 2001 Load: 34.0 t ADT: 4,000

LRD DONLIN RD

Good

Over: ONE MILE CREEK

0.3M E JCT CTH G, Juneau, WI

Built 2003 Load: 34.0 t ADT: 127

LRD 19TH AVE

Good

Over: LEMONWEIR RIVER

.3 M N JCT CTH N, Juneau, WI

Built 2015 Load: 34.0 t ADT: 365

IH 90/94 WB

Good

Over: CTH G

0.7M W JCT STH 82 TO E, Juneau, WI

Built 2022 Load: 34.0 t ADT: 18,375

LRD MULLONEY RD

Good

Over: BEAVER CREEK

1.1M W JCT CTH H, Juneau, WI

Built 1986 Load: 34.0 t ADT: 47

IH 90 EB-IH 94 EB

Good

Over: LEMONWEIR RIVER

0.7M E JCT STH 82 TO E, Juneau, WI

Built 2022 Load: 34.3 t ADT: 17,350

IH 90 WB-IH 94 WB

Good

Over: LEMONWIER RIVER

9.5M W JCT CTH HH TO N, Juneau, WI

Built 2022 Load: 34.3 t ADT: 18,375

BEWICK ROAD

Good

Over: E BR. LITTLE YELLOW RVR

SEC 18 T20N R3E, Juneau, WI

Built 1993 Load: 34.5 t ADT: 1

STH 82

Good

Over: WISCONSIN RIVER

0.4M E JCT CTH HH TO S, Juneau, WI

Built 2019 Load: 34.7 t ADT: 4,900

STH 80

Good

Over: S BR YELLOW RIVER

2.2M JCT STH58, Juneau, WI

Built 1955 Load: 35.6 t ADT: 4,500

IH 90 EB-IH 94 EB

Good

Over: SEVEN MILE CREEK

3.5M E JCT STH 82 TO E, Juneau, WI

Built 1964 Load: 35.6 t ADT: 17,350

LRD 3RD ST W

Good

Over: BEAVER CREEK

4.4M W JCT STH 173, Juneau, WI

Built 1989 Load: 35.6 t ADT: 52

LRD 5TH ST EAST

Good

Over: CRANBERRY CREEK

0.6M W JCT CTH F, Juneau, WI

Built 1989 Load: 35.6 t ADT: 34

LRD 20TH ST W

Good

Over: LITTLE YELLOW RIVER

2.2M N JCT STH 21, Juneau, WI

Built 1991 Load: 35.6 t ADT: 47

STH 58

Good

Over: LITTLE ONE MILE CREEK

0.8M N JCT CTH I, Juneau, WI

Built 2000 Load: 35.6 t ADT: 2,100

LRD 28TH AVE

Good

Over: LYNDON CREEK

0.6M N JCT CTH N, Juneau, WI

Built 2006 Load: 35.6 t ADT: 52

LRD EISFELDT RD

Good

Over: BEAVER CREEK

0.5M E JCT CTH H, Juneau, WI

Built 1969 Load: 35.6 t ADT: 33

IH 90/94 WB

Good

Over: CTH C

6.3M E JCT CTH PP, Juneau, WI

Built 2010 Load: 36.0 t ADT: 17,900

COAVER ROAD

Good

Over: LITTLE YELLOW RIVER

SEC 31 T19N R3E, Juneau, WI

Built 1993 Load: 36.3 t ADT: 1

IH 90/94EB

Good

Over: CTH C

6.5M W JCT STH 80 TO N, Juneau, WI

Built 2011 Load: 36.3 t ADT: 17,900

STH 82

Good

Over: TRIB TO WI RIVER

0.3M E JCT CTH HH (S), Juneau, WI

Built 2019 Load: 36.9 t ADT: 3,400

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

Related

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

Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.