Total bridges
336
Public highway bridges in Kane County
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.
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
- 1900s 2
1900–1909
2 bridges
- 1910s 2
1910–1919
2 bridges
- 1920s 9
1920–1929
9 bridges
- 1930s 9
1930–1939
9 bridges
- 1940s 9
1940–1949
9 bridges
- 1950s 29
1950–1959
29 bridges
- 1960s 34
1960–1969
34 bridges
- 1970s
1970–1979
51 bridges
- 1980s 31
1980–1989
31 bridges
- 1990s 23
1990–1999
23 bridges
- 2000s
2000–2009
41 bridges
- 2010s
2010–2019
86 bridges
- 2020s 10
2020–2029
10 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.
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.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| DuPage County | 344 | 37.5% | 54.4% | 8.1% | 1985 |
| Kankakee County | 344 | 40.1% | 53.5% | 6.4% | 1982 |
| Stephenson County | 342 | 61.1% | 36.3% | 2.6% | 1977 |
| Kane County (this page) | 336 | 48.2% | 45.5% | 6.3% | 1986 |
| Shelby County | 335 | 56.4% | 36.4% | 7.2% | 1978 |
| Pike County | 330 | 23.9% | 66.1% | 10% | 1979 |
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).
- Jefferson County, AR · 336 bridges
- Tuscarawas County, OH · 336 bridges
- Warren County, OH · 336 bridges
- Charleston County, SC · 336 bridges
Similar average build year
Nearest mean year-built outside IL (1986 here).
- El Paso County, TX · avg 1986 · 783 bridges
- Caddo County, LA · avg 1986 · 682 bridges
- Weld County, CO · avg 1986 · 614 bridges
- Polk County, IA · avg 1986 · 545 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (336)
IL 56 WB
FairOver: IL 47
4 M S I-88, Kane, IL
Built 1961 Load: 36.0 t ADT: 14,800
IL 64
FairOver: FOX RIVER
0.2 M W OF IL 25, Kane, IL
Built 1997 Load: 36.0 t ADT: 28,300
KESLINGER RD
FairOver: MILL CREEK
0.9 MI W OF PECK RD, Kane, IL
Built 1997 Load: 36.0 t ADT: 5,800
CAMP DEAN ROAD
FairOver: WELCH CREEK
.2 MI.S OFGRANART RD, Kane, IL
Built 1982 Load: 36.0 t ADT: 450
TR-42 (Ehlers Rd)
FairOver: Youngs Creek
4.0 MI SW KANEVILLE, Kane, IL
Built 1984 Load: 36.3 t ADT: 125
US 20
FairOver: IL 25 (LIBERTY ST)
US 20 & LIBERTY ST, Kane, IL
Built 1959 Load: 36.6 t ADT: 47,200
TR-133 (Rowe Road)
FairOver: Welch Creek
2.6 MI SW ELBURN, Kane, IL
Built 1978 Load: 36.6 t ADT: 125
SEAVEY RD
FairOver: BLACKBERRY CREEK
0.6 MI NW FINLEY RD, Kane, IL
Built 1971 Load: 36.6 t ADT: 50
BARRON ROAD
FairOver: VIRGIL DR DT 3
1.0 MI N Ramm Rd., Kane, IL
Built 1982 Load: 36.6 t ADT: 50
CRAWFORD ROAD
FairOver: BOWES CREEK
0.2 M S OF BOWES RD, Kane, IL
Built 1986 Load: 36.6 t ADT: 750
IL 72
FairOver: COON CREEK
5.3 M W OF IL 47, Kane, IL
Built 1928 Load: 36.9 t ADT: 6,650
GALENA BLVD WEST
FairOver: IL 56
1.3 M E OF IL 47, Kane, IL
Built 1961 Load: 38.2 t ADT: 8,900
US 30
FairOver: FOX RIVER & IL 25
US RTE 30 & FOX RIV, Kane, IL
Built 1957 Load: 38.2 t ADT: 31,600
OBRIEN ROAD
FairOver: HARMONY CREEK
4 MI NW HAMPSHIRE, Kane, IL
Built 1982 Load: 38.6 t ADT: 75
ALLEN RD
FairOver: COON CK
NE SEC19 T42N R6E, Kane, IL
Built 1999 Load: 38.6 t ADT: 325
MIDDLETON ROAD
FairOver: VIRGIL DITCH NO 3
3 MI S BURLINGTON, Kane, IL
Built 1980 Load: 38.6 t ADT: 150
Harmony Road
FairOver: Interstate 90
I-90 1M W of US 20, Kane, IL
Built 2014 Load: 39.9 t ADT: 1,950
US 30
FairOver: RIVER ST(MONTGOMERY)
4.5 M E OF IL 47, Kane, IL
Built 1958 Load: 39.9 t ADT: 31,600
US 20 EB (LARKIN)
FairOver: US 20 WB
2.6 M W OF IL 31, Kane, IL
Built 1961 Load: 40.2 t ADT: 7,200
IL 31
FairOver: MILL CREEK
1.1 M N OF IL 56, Kane, IL
Built 1935 Load: 40.2 t ADT: 21,500
STEARNS RD
FairOver: FOX RIVER
0.6 MI W OF IL25, Kane, IL
Built 2010 Load: 40.2 t ADT: 15,400
RANDALL ROAD
FairOver: I-88 (EW TOLLWAY)
1 MI N INDIAN TRAIL, Kane, IL
Built 1958 Load: 40.5 t ADT: 16,200
IL 25 (BROADWAY)
FairOver: INDIAN CREEK
3 M S OF IL 56, Kane, IL
Built 1956 Load: 40.8 t ADT: 18,900
IL 38
FairOver: FOX RIVER
IL 38 & FOX RIVER, Kane, IL
Built 1992 Load: 41.5 t ADT: 25,600
MONTGOMERY ROAD
FairOver: WAUBONSIE CREEK
0.3 MI NW US RTE 34, Kane, IL
Built 1977 Load: 41.5 t ADT: 10,450
FABYAN PARKWAY
FairOver: MILL CREEK
.1M W KANENVILLE RD, Kane, IL
Built 2008 Load: 42.4 t ADT: 10,250
WATERFORD DR
FairOver: WAUBONSIE CREEK
.3M N OF US34, Kane, IL
Built 1995 Load: 42.4 t ADT: 5,800
KESLINGER ROAD
FairOver: TRIBUTARY TO MILL CR
500 W OF BUNKER RD, Kane, IL
Built 2013 Load: 43.1 t ADT: 7,100
IL 25
FairOver: POPLAR CREEK
0.4 M S OF US 20, Kane, IL
Built 1989 Load: 43.1 t ADT: 15,900
IL31 RMP TO I88WB
FairOver: I-88 E-W TOLL
0.2MI W OF IL31, Kane, IL
Built 2008 Load: 43.1 t ADT: 1,800
GALENA BLVD
FairOver: BLACKBERRY CREEK
1.25 M E OF IL 56, Kane, IL
Built 1995 Load: 43.4 t ADT: 14,400
ASHLAND AVENUE
FairOver: W BRANCH OF FOX RV
400 FT W ILL RTE 25, Kane, IL
Built 1961 Load: 45.0 t ADT: 6,600
IL 38
FairOver: RR - UP
2.9 M W OF IL 47, Kane, IL
Built 1964 Load: 45.7 t ADT: 8,650
IL 25
FairOver: RR - UP
0.5 M S OF IL 38, Kane, IL
Built 1965 Load: 45.7 t ADT: 6,550
MC CORNACK ROAD
FairOver: TYLER CREEK
0.7 MI N BIG TIMBER, Kane, IL
Built 1959 Load: 46.0 t ADT: 475
IL 25
FairOver: Stearns Road Trail
0.01 M N STERNS RD, Kane, IL
Built 2009 Load: 46.7 t ADT: 14,900
PLANK ROAD
FairOver: PINGREE CREEK
2.3 MI W UDINA, Kane, IL
Built 2001 Load: 48.3 t ADT: 5,400
Lyle Avenue
FairOver: Sandy Creek
0.15 Mi. N Highland Ave., Kane, IL
Built 1985 Load: 48.3 t ADT: 2,100
US 30
FairOver: IL 31 & BNSF RR
3.3 M NW OF US 34, Kane, IL
Built 1958 Load: 49.9 t ADT: 31,600
ORCHARD GATEWAY BL
FairOver: E RUN BLACKBERRY CRE
0.29 MI E ORCHARD RD, Kane, IL
Built 2006 Load: 50.2 t ADT: 6,100
IL 47 & US-30
FairOver: ROB ROY CREEK
2.9 M S OF IL 56, Kane, IL
Built 1989 Load: 50.5 t ADT: 20,200
BOLCUM ROAD
FairOver: FERSON CREEK
0.8 MI W RANDALL RD, Kane, IL
Built 2011 Load: 51.5 t ADT: 4,700
DOWNER PLACE
FairOver: FOX RIVER W. BRANCH
1000 FT W ILL RTE 25, Kane, IL
Built 1924 Load: 51.5 t ADT: 3,550
IL 31
FairOver: RR - BNSF
0.5 M S OF US 30, Kane, IL
Built 1960 Load: 52.8 t ADT: 14,200
ANDERSON RD
FairOver: UNION PACIFIC RR
1 MI S of IL 38, Kane, IL
Built 2016 Load: 53.5 t ADT: 4,050
DOWNER PLACE
FairOver: FOX RIVER E. BRANCH
400 FT W ILL RTE 25, Kane, IL
Built 1924 Load: 54.4 t ADT: 3,550
IL 31
FairOver: RR - CN
3.2 M S OF US 20, Kane, IL
Built 1955 Load: 55.1 t ADT: 6,250
IL 31
FairOver: RR - METRA
0.8 M S OF I-90, Kane, IL
Built 1952 Load: 56.4 t ADT: 21,000
OWENS ROAD
FairOver: BIG ROCK CREEK
2 MI W KANEVILLE, Kane, IL
Built 1900 Load: 63.8 t ADT: 50
IL 56 EB
FairOver: BLACKBERRY CREEK
.4M N OF GALENA BLVD, Kane, IL
Built 1958 Load: 67.4 t ADT: 14,800
Read our methodology - how this data is sourced, computed, and verified.
Related
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.