Total bridges
344
Public highway bridges in Kankakee County
County profile · official public datasets
Kankakee County, IL
344 public highway bridges tracked in the FHWA National Bridge Inventory: 40.1% rated Good, 53.5% Fair, 6.4% Poor.
- 344
- Public bridges
- 40.1%
- Good condition
- 6.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Kankakee County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 31%
- lowest Poor share in state
- 6.4%
- Poor-condition share
- 344
- public highway bridges
- 1982
- 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.
Kankakee County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Kankakee County ranks #32 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.4%). Kankakee County, Illinois contains 344 public highway bridges. Roughly 40.1% are rated “Good,” 53.5% “Fair,” and 6.4% “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
40.1%
138 of 344 rated 7-9
Fair condition
53.5%
184 of 344 rated 5-6
Poor condition
6.4%
22 of 344 rated 4 or below
In-state Poor-share rank
#32 of 102
Among Illinois counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 344 NBI-tracked bridges by lowest applicable component rating.
Good 40.1% (138)
Fair 53.5% (184)
Poor 6.4% (22)
Kankakee County's Poor-condition bridges carry 79,175 vehicle crossings a day
That is 10.2% of the county's reported daily bridge traffic on 6.4% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 3,599 crossings a day against 1,505 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 344 of 344 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
33.4% of Kankakee County's bridges have passed the 50-year mark
115 of the 344 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 40.1% 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 18.3% of the county's Poor-condition bridge traffic
FAI-57 SB over ILL 17, built 1955, carries 14,450 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 22-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 79,175 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Kankakee County's bridges were built
344 bridges with a recorded construction year, grouped by decade
- pre-1900 1
Built before 1900
1 bridges
- 1900s 1
1900–1909
1 bridges
- 1910s 3
1910–1919
3 bridges
- 1920s 2
1920–1929
2 bridges
- 1930s 7
1930–1939
7 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 22
1950–1959
22 bridges
- 1960s
1960–1969
48 bridges
- 1970s
1970–1979
64 bridges
- 1980s
1980–1989
82 bridges
- 1990s
1990–1999
42 bridges
- 2000s
2000–2009
40 bridges
- 2010s 21
2010–2019
21 bridges
- 2020s 10
2020–2029
10 bridges
What this shows Construction peaked in the 1980s, when 82 of the county's bridges still in the inventory were built, which is 23.8% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1982) matches the Illinois average (1979).
How Kankakee County compares with Illinois's closest counties by inventory size
The 5 Illinois counties nearest Kankakee County in number of bridges, with their condition splits. Its 6.4% Poor share is the 3rd-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1983 is in line with the group.
Showing the 5 closest of 101 Illinois counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Peoria County | 352 | 24.1% | 57.7% | 18.2% | 1983 |
| Macon County | 346 | 25.7% | 58.7% | 15.6% | 1984 |
| DuPage County | 344 | 37.5% | 54.4% | 8.1% | 1985 |
| Kankakee County (this page) | 344 | 40.1% | 53.5% | 6.4% | 1982 |
| Stephenson County | 342 | 61.1% | 36.3% | 2.6% | 1977 |
| Kane County | 336 | 48.2% | 45.5% | 6.3% | 1986 |
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 Kankakee 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 Kankakee County, both outside Illinois so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IL (344 bridges here).
- Shelby County, AL · 344 bridges
- Cumberland County, ME · 344 bridges
- Greene County, OH · 344 bridges
- Galveston County, TX · 344 bridges
Similar average build year
Nearest mean year-built outside IL (1982 here).
- Oklahoma County, OK · avg 1982 · 1,216 bridges
- Jackson County, MO · avg 1982 · 930 bridges
- Milwaukee County, WI · avg 1982 · 893 bridges
- Broward County, FL · avg 1982 · 686 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (344)
IL 115
GoodOver: Reddick Creek
1.7M N of CABERY, Kankakee, IL
Built 2016 Load: 39.2 t ADT: 775
TR 48
GoodOver: N BONFIELD BROOK
3.5 MI NW OF BONFIEL, Kankakee, IL
Built 1977 Load: 39.2 t ADT: 300
I-57 SB
GoodOver: IL 50
I-57 & IL 50 INTRCHG, Kankakee, IL
Built 2012 Load: 40.2 t ADT: 14,450
IL 115
GoodOver: Reddick Creek
1.1M N of CABERY, Kankakee, IL
Built 2016 Load: 41.5 t ADT: 775
I-57 NB
GoodOver: RR & DrainageDitch
0.9 M N of IL 17, Kankakee, IL
Built 2023 Load: 41.8 t ADT: 14,450
IL 115
GoodOver: Gar Creek
2 M SW of Kankakee, Kankakee, IL
Built 2017 Load: 42.8 t ADT: 2,400
CH-3
GoodOver: KANKAKEE RIVER
AROMA PARK, Kankakee, IL
Built 1914 Load: 45.4 t ADT: 2,800
I-57 SB
GoodOver: Kankakee River
2.9 M N. of US 45/52, Kankakee, IL
Built 2015 Load: 45.7 t ADT: 11,650
IL 102
GoodOver: Rock Creek
6.5 M NW of US 45/52, Kankakee, IL
Built 2016 Load: 45.7 t ADT: 4,800
6000 N RD
GoodOver: I-57 SB & NB
3.2 M. N. of IL 50, Kankakee, IL
Built 2017 Load: 46.3 t ADT: 2,050
ILL 17
GoodOver: BULL CREEK
5.0 M SE OF JCT 1&17, Kankakee, IL
Built 2002 Load: 46.7 t ADT: 4,900
Waldron Rd
GoodOver: I-57
3.4 M N US 45&54, Kankakee, IL
Built 2023 Load: 46.7 t ADT: 4,200
Indian Oak 5000N C
GoodOver: I-57
2.2 MI N IL 50, Kankakee, IL
Built 2019 Load: 47.3 t ADT: 6,200
IL 17
GoodOver: Granary Creek
1.25mi E of Essex Rd, Kankakee, IL
Built 2021 Load: 48.0 t ADT: 2,950
TR 220
GoodOver: LITTLE BEAVER CR
2 MI SE OF ST ANNE, Kankakee, IL
Built 1974 Load: 52.2 t ADT: 75
IL 17
GoodOver: E Branch of Horse Cr
0.2M E ofHerscher Rd, Kankakee, IL
Built 2022 Load: 52.5 t ADT: 3,650
I-57 NB
GoodOver: Grinnell Rd 1000Rd N
0.95mi N of IL 17, Kankakee, IL
Built 2023 Load: 56.1 t ADT: 14,450
IL 17 EB
GoodOver: Baker Creek/Exline Sloug
2.27 M E of I-57, Kankakee, IL
Built 1964 Load: 57.3 t ADT: 11,900
IL 17 WB
GoodOver: Baker Creek/Exline Sloug
2.27 M E of I-57, Kankakee, IL
Built 1964 Load: 58.0 t ADT: 11,900
ILL 115
GoodOver: HORSE CREEK
15.1 MI W OF US 45, Kankakee, IL
Built 2004 Load: 65.1 t ADT: 2,000
US 45/52
GoodOver: N. Branch of Rock Cr
1.5M N of Manteno Rd/CH 9, Kankakee, IL
Built 2023 Load: 82.3 t ADT: 5,900
Armour Rd (FAU 617
GoodOver: IL Central RR
0.3 M W of IL 50, Kankakee, IL
Built 2024 Load: 89.1 t ADT: 8,050
CH 6
PoorOver: WILEY CR
6.3 MI NW KANKAKEE, Kankakee, IL
Built 1964 Load: 0.0 t ADT: 750
CH 17
PoorOver: EXLINE SL
5.85 MI NE MANTENO, Kankakee, IL
Built 1961 Load: 2.6 t ADT: 1,050
CH 14
PoorOver: TRIM CR.
1.16 MI NE MOMENCE, Kankakee, IL
Built 1980 Load: 7.1 t ADT: 1,200
TR 175
PoorOver: CREEK
2.25 MI NE ST. ANNE, Kankakee, IL
Built 1970 Load: 10.4 t ADT: 75
FAS 1301 & CH 41
PoorOver: GRANARY CREEK
2.2 MI N OF ILL 17, Kankakee, IL
Built 1976 Load: 12.6 t ADT: 625
CH 13
PoorOver: PIKE CR
1.1 MI NE MOMENCE, Kankakee, IL
Built 1960 Load: 15.2 t ADT: 850
ILL.17
PoorOver: HORSE CR.
0.7 M E UNION HILL, Kankakee, IL
Built 1958 Load: 19.1 t ADT: 2,950
TR 54
PoorOver: STREAM
2 M E OF HERSCHER, Kankakee, IL
Built 1978 Load: 19.4 t ADT: 50
CH 3
PoorOver: DEER CR
3 MI W ST ANNE, Kankakee, IL
Built 1969 Load: 22.0 t ADT: 475
CH 12
PoorOver: HORSE CR
3 MI N HERSCHER, Kankakee, IL
Built 1979 Load: 29.2 t ADT: 1,850
TR 13A
PoorOver: BULL CREEK
6 M NE OF GRANT PARK, Kankakee, IL
Built 1978 Load: 29.8 t ADT: 275
CH 54
PoorOver: TOWER CR
1.5 MI W OF MOMENCE, Kankakee, IL
Built 1975 Load: 31.1 t ADT: 3,050
CH 37
PoorOver: IROQUOIS R
5.3 MI W ST. ANNE, Kankakee, IL
Built 1979 Load: 32.4 t ADT: 1,150
TR 87A
PoorOver: SOLDIERS CREEK
0.25 MI E OF I-57, Kankakee, IL
Built 1971 Load: 34.3 t ADT: 2,350
MANTENO RD
PoorOver: I-57
MANTENO INTER, Kankakee, IL
Built 1964 Load: 35.0 t ADT: 9,550
FAI-57 SB
PoorOver: Norfolk & So. RR / Ditch
0.9 MI N ILL 17, Kankakee, IL
Built 1954 Load: 35.3 t ADT: 14,450
US 45 & 52
PoorOver: I-57
JCT I-57 & US 45&52, Kankakee, IL
Built 1962 Load: 36.0 t ADT: 9,100
ILL 115
PoorOver: CRANE CREEK
.2MI W OF BUCKINGHAM, Kankakee, IL
Built 1982 Load: 42.4 t ADT: 900
FAI-57 NB
PoorOver: ILL RTE 17
ILL 17 INTER, Kankakee, IL
Built 1955 Load: 45.0 t ADT: 11,650
FAI-57 SB
PoorOver: ILL 17
ILL RTE 17 INTER, Kankakee, IL
Built 1955 Load: 45.0 t ADT: 14,450
TR 39
PoorOver: TOWER CREEK
3.5 MI SE WHITAKER, Kankakee, IL
Built 1977 Load: 45.0 t ADT: 75
ILL 17
PoorOver: REDDICK RUN CR.
0.9 M E OF REDDICK, Kankakee, IL
Built 1959 Load: 56.1 t ADT: 2,300
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.