County profile · official public datasets

Kane County, IL

336 public highway bridges tracked in the FHWA National Bridge Inventory: 48.2% rated Good, 45.5% Fair, 6.3% Poor.

336
Public bridges
48.2%
Good condition
6.3%
Poor condition

The verdict

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

Kane County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 29%
lowest Poor share in state
6.3%
Poor-condition share
336
public highway bridges
1986
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.

Kane County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Kane County ranks #30 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.3%). Kane County, Illinois contains 336 public highway bridges. Roughly 48.2% are rated “Good,” 45.5% “Fair,” and 6.3% “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

336

Public highway bridges in Kane County

Good condition

48.2%

162 of 336 rated 7-9

Fair condition

45.5%

153 of 336 rated 5-6

Poor condition

6.3%

21 of 336 rated 4 or below

In-state Poor-share rank

#30 of 102

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

Condition distribution

Share of 336 NBI-tracked bridges by lowest applicable component rating.

Good
48.2% (162)
Fair
45.5% (153)
Poor
6.3% (21)

Kane County's Poor-condition bridges carry 183,925 vehicle crossings a day

That is 4.9% of the county's reported daily bridge traffic on 6.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 8,758 crossings a day against 11,751 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 335 of 336 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

36.6% of Kane County's bridges have passed the 50-year mark

123 of the 336 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 48.2% 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 25.7% of the county's Poor-condition bridge traffic

US 20 BY PASS over FOX RIVER, built 1960, carries 47,200 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 21-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 183,925 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Kane County's bridges were built

336 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 2010s, when 86 of the county's bridges still in the inventory were built, which is 25.6% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year is 1986, 7 years newer than the Illinois average of 1979.

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

How Kane County compares with Illinois's closest counties by inventory size

The 5 Illinois counties nearest Kane County in number of bridges, with their condition splits. Its 6.3% Poor share is the 2nd-lowest of these 6. Its average build year of 1986 against a peer-group mean of 1980 is 6 years newer.

Showing the 5 closest of 101 Illinois counties eligible for comparison.

Bridge inventory size and condition shares for Kane County and the 5 Illinois counties closest to it in inventory size
County Bridges Poor
DuPage County 344 8.1%
Kankakee County 344 6.4%
Stephenson County 342 2.6%
Kane County (this page) 336 6.3%
Shelby County 335 7.2%
Pike County 330 10%

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 Kane 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 Kane County, both outside Illinois so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside IL (336 bridges here).

Similar average build year

Nearest mean year-built outside IL (1986 here).

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

All 336 Good 162 Fair 153 Poor 21

Good-condition bridges (162)

MEREDITH ROAD

Good

Over: VIRGIL DD NO 1

3 MI E. MAPLE PARK, Kane, IL

Built 1900 Load: 24.3 t ADT: 1,450

FINLEY ROAD

Good

Over: BLACKBERRY CREEK

2.0 MI N SUGAR GROVE, Kane, IL

Built 1971 Load: 25.6 t ADT: 50

THATCHER ROAD

Good

Over: VIRGIL DITCH NO. 1

0.1 MI S. BEITH RD, Kane, IL

Built 2014 Load: 27.5 t ADT: 375

SCOTT RD

Good

Over: WELCH CREEK

1.2 M W OF DAUBERMAN, Kane, IL

Built 1997 Load: 28.2 t ADT: 425

HARTER ROAD

Good

Over: WELCH CREEK

0.5 M NW KANEVILLE, Kane, IL

Built 1991 Load: 28.8 t ADT: 3,450

BIG TIMBER RD

Good

Over: TYLER CR.

1.25M W. RANDALL RD, Kane, IL

Built 2003 Load: 29.5 t ADT: 14,500

IL 72

Good

Over: I- 90

3.0 M E OF IL 47, Kane, IL

Built 2015 Load: 29.8 t ADT: 13,800

DAUBERMAN RD

Good

Over: I-88 E-W TOLL RD.

1.1 MI N HARTER RD, Kane, IL

Built 1972 Load: 30.1 t ADT: 2,650

Sandwald Road

Good

Over: Interstate 90

I90 1.5 M W of IL 47, Kane, IL

Built 2013 Load: 30.5 t ADT: 525

PEPLOW RD

Good

Over: TRIB VIRGIL DITCH 3

.5 MI N RAMM RD, Kane, IL

Built 2019 Load: 31.1 t ADT: 675

ILLINOIS AVE

Good

Over: W BR FOX RIVER

1200 FT W ILL RT 25, Kane, IL

Built 1949 Load: 31.4 t ADT: 13,200

RANDALL RD

Good

Over: MILL CREEK TRIB.

0.2 MI S FABYAN PKWY, Kane, IL

Built 1979 Load: 31.8 t ADT: 34,800

Hennig Road

Good

Over: I-90

I-90 2M W of ILL 47, Kane, IL

Built 2014 Load: 31.8 t ADT: 25

Powers Rd

Good

Over: I90

1.5 Mi NW of IL 72, Kane, IL

Built 2013 Load: 32.1 t ADT: 1,300

IL 38

Good

Over: DITCH

0.25 M W OF PECK RD, Kane, IL

Built 2012 Load: 32.4 t ADT: 11,200

US 30 IL31 RAMPS

Good

Over: STREAM

W of IL31 No of US30, Kane, IL

Built 2014 Load: 32.4 t ADT: 5,250

IL 31

Good

Over: DITCH

300 S of US30, Kane, IL

Built 2014 Load: 32.4 t ADT: 14,200

US 20

Good

Over: PINGREE CREEK

4 M SE OF IL 47, Kane, IL

Built 2004 Load: 32.4 t ADT: 12,100

INDIAN TRAIL

Good

Over: FOX RIVER

0.3 MI W MITCHELL, Kane, IL

Built 1963 Load: 32.4 t ADT: 19,400

DEERPATH ROAD

Good

Over: MILL CREEK

0.1 MI S MAIN ST, Kane, IL

Built 1970 Load: 32.4 t ADT: 1,700

REINKING ROAD

Good

Over: STREAM

2 MI E STARKS STA., Kane, IL

Built 1978 Load: 32.4 t ADT: 3,300

UMBDENSTOCK RD

Good

Over: CNIC RR(CC&P)

2 Mi. west of Ill 31, Kane, IL

Built 2012 Load: 32.4 t ADT: 10,500

BIG TIMBER ROAD

Good

Over: TYLER CREEK

0.5M W ILL 31, Kane, IL

Built 1990 Load: 32.4 t ADT: 15,500

DEERPATH LANE

Good

Over: TRIB. S. BR. KISHWAU

.55 MI SW OF HUNTLEY, Kane, IL

Built 2006 Load: 32.4 t ADT: 1,550

JIM DHAMER DRIVE

Good

Over: EAKIN CREEK

150 W OF IL RTE 47, Kane, IL

Built 1996 Load: 32.4 t ADT: 2,150

FAP-360 Frnswrth A

Good

Over: Indian Creek

0.3 MI S SHEFFER RD, Kane, IL

Built 2018 Load: 32.4 t ADT: 21,300

DELL WEBB BLVD

Good

Over: EAKIN CRK

0.7 MI W IL 47, Kane, IL

Built 2002 Load: 32.4 t ADT: 1,600

MICHIGAN AVENUE

Good

Over: S BR KISHWAUKEE RIV

0.2 MI S OF SUN CITY, Kane, IL

Built 2000 Load: 32.4 t ADT: 250

Tournament Drive

Good

Over: Bowes Creek

0.5 Mi W Bowes Creek Blvd, Kane, IL

Built 2007 Load: 32.4 t ADT: 1,300

WINCHESTER WAY

Good

Over: TRIB TO FERSON CREEK

0.1 MI E CORRON RD., Kane, IL

Built 1975 Load: 32.4 t ADT: 150

WILSON ST

Good

Over: FOX RIVER

.1 MI W OF IL25, Kane, IL

Built 2007 Load: 32.4 t ADT: 16,900

Sheffer Road

Good

Over: Indian Creek

.1M E. Farnsworth, Kane, IL

Built 2015 Load: 32.4 t ADT: 3,000

Reserve Drive

Good

Over: Otter Creek

0.7 Mi S Bowes Rd., Kane, IL

Built 2004 Load: 32.4 t ADT: 850

Reserve Drive

Good

Over: Otter Creek

0.6 Mi S Bowes Rd., Kane, IL

Built 2004 Load: 32.4 t ADT: 850

Reserve Drive

Good

Over: Otter Creek

0.5 Mi S Bowes Rd., Kane, IL

Built 2004 Load: 32.4 t ADT: 850

MAIN STREET

Good

Over: FOX RIVER

0.3 MI E. OF IL 31, Kane, IL

Built 1935 Load: 32.4 t ADT: 15,500

DAMISCH ROAD

Good

Over: TYLER CREEK

.2MI S BIG TIMBER RD, Kane, IL

Built 2010 Load: 32.4 t ADT: 2,400

HENNESSY COURT

Good

Over: TYLER CREEK

W OF TIPPERARY ST, Kane, IL

Built 1975 Load: 32.4 t ADT: 25

Old Bridge Lane

Good

Over: Detention Pond

0.2 Mi SE Highland Woods, Kane, IL

Built 2005 Load: 32.4 t ADT: 150

Airlite Street

Good

Over: Sandy Creek

0.1 Mi S Highland Ave., Kane, IL

Built 2006 Load: 32.4 t ADT: 2,050

MS0002-Wester Blvd

Good

Over: Cambridge Lakes Conn

0.9 MI S of Higgins, Kane, IL

Built 2005 Load: 32.4 t ADT: 3,050

Wester Blvd

Good

Over: Creek

1.9 MI S of Higgins, Kane, IL

Built 2005 Load: 32.4 t ADT: 3,050

Reinking Road

Good

Over: Tyler Creek

350’ N. of Andrew Blvd, Kane, IL

Built 2023 Load: 32.4 t ADT: 2,750

PRAIRIE ST

Good

Over: FOX RIVER

.3M S OF IL64, Kane, IL

Built 1993 Load: 32.4 t ADT: 5,300

MS-4087 (Ohio St)

Good

Over: BNSF RR & Indian Crk

0.8MI E OF IL 25, Kane, IL

Built 2016 Load: 32.4 t ADT: 9,900

DOBSON LANE

Good

Over: MILL CREEK

.5M S OF KESLINGER, Kane, IL

Built 2009 Load: 32.4 t ADT: 1,100

PRICE ROAD

Good

Over: BIG ROCK CREEK

0.25 MI W RHODES AV, Kane, IL

Built 2017 Load: 32.4 t ADT: 225

TALAMORE BLVD

Good

Over: TRIB KISHWAUKEE RIV

0.1 MI W IL 47, Kane, IL

Built 2005 Load: 32.4 t ADT: 1,200

BOWES ROAD

Good

Over: OTTER CREEK

.75M W OF RANDALL RD, Kane, IL

Built 2008 Load: 32.7 t ADT: 10,200

PERRY ROAD

Good

Over: BIG ROCK CREEK

2.5 MI NW KANEVILLE, Kane, IL

Built 1972 Load: 33.0 t ADT: 1,650

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.