Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near national median SD
Illinois bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
- 7.9%
- Structurally deficient
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges rated 0-4
Structurally Deficient
7.9%
2,186 bridges flagged for repair priority
0.9pp vs national avg 7.0%
Illinois vs national bridge condition
Illinois — Good condition share 41.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Illinois — Structurally deficient share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Illinois (FHWA NBI)
Counties (102)
Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222
Illinois vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.
44
Rhode Island
7.69% top marginal rate
31
Nebraska
7.73% top marginal rate
17
Illinois
7.88% top marginal rate
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by composite NBI rating. Each is inspected at least every 24 months.
FAS 1599
PoorOver: DRAINAGE CANAL
2.2 MI E MEYER, Adams, IL
Built 1980 Load: 0.6 t ADT: 200
CH 15
PoorOver: E FK MAZONRIVER
0.05 MI W CH 16, Grundy, IL
Built 1977 Load: 1.0 t ADT: 1,400
MOOSE RD - TR 240
Structurally DeficientOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
Structurally DeficientOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
Structurally DeficientOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
Structurally DeficientOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
IL 56 WB
UnknownOver: I-88 E-W TOLL RD.
3.5 MI W OF IL 31, Kane, IL
Built 1972 ADT: 31,700
IL 72
UnknownOver: I- 90
3.0 M E OF IL 47, Kane, IL
Built 2015 ADT: 73,600
Tyrrell Road
UnknownOver: I-90 Jane Addams Tol
I90 .9 MI S OF IL72, Kane, IL
Built 2015 ADT: 73,600
RANDALL ROAD
UnknownOver: I-88 (EW TOLLWAY)
1 MI N INDIAN TRAIL, Kane, IL
Built 1958 ADT: 71,200
RANDALL ROAD
UnknownOver: INTERSTATE 90
I90 2.5M W ILL 31, Kane, IL
Built 1958 ADT: 101,700
I90 EB ON-OFF RP
UnknownOver: I90 (NW TOLL)
1.7 M S MCHENRY CO L, Kane, IL
Built 1958 ADT: 57,000
I-88 WB
UnknownOver: FOX R - RR - IL 25
W OF ILL 31, Kane, IL
Built 1958 ADT: 7,700
IL31 RMP TO I88WB
UnknownOver: I-88 E-W TOLL
0.2MI W OF IL31, Kane, IL
Built 2008 ADT: 82,700
I-90 EB
UnknownOver: US 20
4 MI W OF IL 47, Kane, IL
Built 2013 ADT: 8,600
Powers Rd
UnknownOver: I90
1.5 Mi NW of IL 72, Kane, IL
Built 2013 ADT: 73,600
I 90 WB
UnknownOver: US 20
4 MI W IL 47, Kane, IL
Built 2014 ADT: 8,600
Mitchell Road
UnknownOver: I-88_REAGAN_MEM_TOLL
0.8 M E. of Il. 25, Kane, IL
Built 2015 ADT: 82,700
I-88 EB
UnknownOver: FOX R - RR - IL 25
0.1MI E OF IL 31, Kane, IL
Built 2008 ADT: 7,700
ILL CENTRAL GULF R
UnknownOver: NOLAN ROAD
4.2 M W OF ILL 31, Kane, IL
Built 1900 ADT: 3,200
Farnsworth Avenue
UnknownOver: I-88
1.8 Mi E. of Ill. 25, Kane, IL
Built 2016 ADT: 100,200
Church Road
UnknownOver: I-88
1.5 Mi. E. Fox River, Kane, IL
Built 2014 ADT: 82,700
COUNTY LINE RD
UnknownOver: I-88 E.W.TOLL RD
0.6 MI N HARTER RD, Kane, IL
Built 1972 ADT: 31,700
DAUBERMAN RD
UnknownOver: I-88 E-W TOLL RD.
1.1 MI N HARTER RD, Kane, IL
Built 1972 ADT: 31,700
BLISS RD.
UnknownOver: I-88 E-W TOLL RD.
0.25 MI N DENNY RD, Kane, IL
Built 1972 ADT: 31,700
Sandwald Road
UnknownOver: Interstate 90
I90 1.5 M W of IL 47, Kane, IL
Built 2013 ADT: 57,800
Hennig Road
UnknownOver: I-90
I-90 2M W of ILL 47, Kane, IL
Built 2014 ADT: 57,800
Brier Hill Road
UnknownOver: Interstate 90
I-90 1.4M E of US 20, Kane, IL
Built 2013 ADT: 57,800
Harmony Road
UnknownOver: Interstate 90
I-90 1M W of US 20, Kane, IL
Built 2014 ADT: 57,000
I-90
UnknownOver: SLEEPY HOLLOW RD
.25 MI E RANDALL RD, Kane, IL
Built 2014 ADT: 9,000
I-90
UnknownOver: SLEEPY HOLLOW RD
.25 M E RANDALL RD, Kane, IL
Built 2014 ADT: 9,000
Deerpath Road
UnknownOver: I-88
I-88 3.3M W ILL 25, Kane, IL
Built 2021 ADT: 52,500
I-90 (WB)
UnknownOver: Ill. Rte. 31
1.5 Mi. W. of IL 25, Kane, IL
Built 2015 ADT: 25,600
I-90 (EB)
UnknownOver: Illinois Route 31
1.5 Mi W. of Il 25, Kane, IL
Built 2016 ADT: 21,000
I-90 (EB)
UnknownOver: Fox River/Duncan Ave
1 Mi. E. Ill. 31, Kane, IL
Built 2015 ADT: 3,000
I-90 (WB)
UnknownOver: Fox River/Duncan Ave
1 Mi. E. of IL 31, Kane, IL
Built 2015 ADT: 3,000
US 30
UnknownOver: RIVER ST(MONTGOMERY)
4.5 M E OF IL 47, Kane, IL
Built 1958 ADT: 300
US 30
UnknownOver: FOX RIVER & IL 25
US RTE 30 & FOX RIV, Kane, IL
Built 1957 ADT: 7,900
K B & S RR
UnknownOver: I-57
3.7 M N OF RTE 45&52, Kankakee, IL
Built 1953 ADT: 23,300
FAI-57 NB
UnknownOver: ILL RTE 17
ILL 17 INTER, Kankakee, IL
Built 1955 ADT: 10,800
FAI-57 SB
UnknownOver: ILL 17
ILL RTE 17 INTER, Kankakee, IL
Built 1955 ADT: 15,200
FAI-57 SB
UnknownOver: GRINNELL RD FAU 6221
0.95 MI N ILL 17, Kankakee, IL
Built 1954 ADT: 2,700
IL 17/FAP 41
UnknownOver: KKK RIVER & PK RD
100 FT W US 45/52, Kankakee, IL
Built 1957 ADT: 125
RR BRIDGE
UnknownOver: WATER ST.US 45
KANKAKEE, Kankakee, IL
Built 1900 ADT: 3,250
US 45 & 52
UnknownOver: I-57
JCT I-57 & US 45&52, Kankakee, IL
Built 1962 ADT: 23,300
MANTENO RD
UnknownOver: I-57
MANTENO INTER, Kankakee, IL
Built 1964 ADT: 33,800
STEGER RD
UnknownOver: I-57
3.2 MI N MANTENO INT, Kankakee, IL
Built 1963 ADT: 33,800
LAKE MANTENO RD
UnknownOver: I-57
1.1 MI N MANTENO RD, Kankakee, IL
Built 1963 ADT: 33,800
7000N RD/MS 1025
UnknownOver: I-57
4.2 M N ILL 50, Kankakee, IL
Built 1963 ADT: 27,400
FAU 6223/OTTO RD
UnknownOver: I-57 & I C G RR
3.4 MI N CHEBANSE IN, Kankakee, IL
Built 1968 ADT: 19,400
CON-RAIL CORP.
UnknownOver: US 45-52
3 BLOCKS N OF COURT, Kankakee, IL
Built 1960 ADT: 19,100
IC RR
UnknownOver: US45 &52 RIVER ST
KANKAKEE, Kankakee, IL
Built 1900 ADT: 4,900
FAU 6189/RIVER RD
UnknownOver: I-57
2.3 ML N OF 45 & 52, Kankakee, IL
Built 1993 ADT: 23,300
ARMOUR RD/FAU 6176
UnknownOver: FAI 057
3.2 MI N OF ILL 17, Kankakee, IL
Built 2002 ADT: 28,900
North Street
UnknownOver: I-57
2.0 MI N OF IL 17, Kankakee, IL
Built 2018 ADT: 28,900
I-57 SB
UnknownOver: IL 50
I-57 & IL 50 INTRCHG, Kankakee, IL
Built 2012 ADT: 24,000
Showing 2,151-2,200 of 27,743 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |