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
UnknownOver: IL 38
0.1 M E IL 83, DuPage, IL
Built 1965 ADT: 48,900
IL 83
UnknownOver: IL 38
2 M W COOK CO LINE, DuPage, IL
Built 1972 ADT: 48,900
IL 83 SB
UnknownOver: IL 56
0.1 M S IL 38, DuPage, IL
Built 1972 ADT: 22,500
IL 83 NB
UnknownOver: IL 56
IL 83 OVER IL 56, DuPage, IL
Built 1972 ADT: 22,500
US 20
UnknownOver: IL 83
1.25 M N OF IL 64, DuPage, IL
Built 1969 ADT: 52,800
55TH ST
UnknownOver: IL 83
1.5 M S US 34, DuPage, IL
Built 1967 ADT: 53,900
EJ&E RR
UnknownOver: ILL 56
05 MI W OF RTE 59, DuPage, IL
Built 1941 ADT: 22,600
SOO RR
UnknownOver: ILL 19
1M.W.OF MEDINAH RD., DuPage, IL
Built 1900 ADT: 15,500
C&NW RR
UnknownOver: ILL RTE 53
0.27 S ST CHARLES RD, DuPage, IL
Built 1900 ADT: 20,800
I-355 NB
UnknownOver: ROHLWING RD
0.5 M N IL53 & US 20, DuPage, IL
Built 1970 ADT: 17,300
I-355 SB
UnknownOver: ROHLWING RD
0.5 M N IL 53 & US20, DuPage, IL
Built 1970 ADT: 17,300
31ST ST
UnknownOver: IL 83
1 M S I-88 EW TOLL, DuPage, IL
Built 1974 ADT: 61,300
IL 83
UnknownOver: IL 19
2 M S COOK CO LINE, DuPage, IL
Built 1972 ADT: 23,000
EMROY AVE
UnknownOver: I-290
0.5 M N OF IL 64, DuPage, IL
Built 1985 ADT: 130,900
HIGHLAND AVE
UnknownOver: IL 56 (BUTTERFIELD)
0.48 M N OF I-88, DuPage, IL
Built 1987 ADT: 13,300
IL 83
UnknownOver: RR - BNSF, BRLGTN RD
0.7 M S OF US 34, DuPage, IL
Built 1986 ADT: 850
PRAIRIE PATH
UnknownOver: IL 83
0.3 M S STCHAS RD, DuPage, IL
Built 1989 ADT: 61,200
IL 83
UnknownOver: US 34
1.5 M W OF I-294, DuPage, IL
Built 1986 ADT: 23,000
IL 38
UnknownOver: IL 53
IL 38 & IL 53, DuPage, IL
Built 1989 ADT: 16,800
PRAIRIE PATH
UnknownOver: IL59
.5 MI NO OF IL-64, DuPage, IL
Built 1993 ADT: 27,900
I-88 EB
UnknownOver: WINFIELD RD
.25MI N.OF DIEHL RD, DuPage, IL
Built 1992 ADT: 16,900
I-88 WB
UnknownOver: WINFIELD ROAD
.25MI N.OF DIEHL RD, DuPage, IL
Built 1992 ADT: 16,900
IL 390 EB EOH
UnknownOver: MEACHAM/MEDINAH RDS
EAST OF ROSELLE RD, DuPage, IL
Built 1992 ADT: 16,500
US 20
UnknownOver: IL 390 ELGIN-OHARE
EAST OF BARRINGTON R, DuPage, IL
Built 1992 ADT: 24,300
CHICAGO AVE
UnknownOver: IL 83
0.5 M S OF US 34, DuPage, IL
Built 1991 ADT: 66,500
IL 56
UnknownOver: I-355
1 M E OF IL 53, DuPage, IL
Built 1988 ADT: 79,200
IL 64
UnknownOver: I-355
0.2 M W OF IL 53, DuPage, IL
Built 1988 ADT: 119,400
IL 390 WB EOH
UnknownOver: MEACHAM/MEDINAH RD
EAST OF ROSELLE RD, DuPage, IL
Built 1992 ADT: 16,500
RR - CP
UnknownOver: IL 19
JUST E OF YORK RD, DuPage, IL
Built 2014 ADT: 26,500
PED OVERPASS
UnknownOver: US 20 (LAKE ST)
.55M W of Roselle Rd, DuPage, IL
Built 2012 ADT: 30,000
IL 53 (ROHLWING R
UnknownOver: IL 390 ELGIN-O'HARE
0.5 M W of I-290, DuPage, IL
Built 2014 ADT: 23,500
I-290 WB 2 IL 390W
UnknownOver: I-290 & IL 390 EOH
AT 1290 ELGIN INTERC, DuPage, IL
Built 2015 ADT: 450
I-290 WB TO IL 390
UnknownOver: I-290SB 2 IL 390 EB
Just E of I290, DuPage, IL
Built 2016 ADT: 14,500
I-290 EB TO IL 390
UnknownOver: IL 390WB TO I-290SB
0.04 M S of Devon, DuPage, IL
Built 2016 ADT: 7,000
I-290 EB TO IL 390
UnknownOver: I-290 & IL 390
0.041 M S of DEVON, DuPage, IL
Built 2016 ADT: 17,800
WB IL390
UnknownOver: I290
100' N of Thorndale, DuPage, IL
Built 2016 ADT: 159,600
EB IL390 to NBI290
UnknownOver: I-290
250' S of Thorndale, DuPage, IL
Built 2016 ADT: 150,800
22ND ST (CERMAK RD
UnknownOver: I- 88,I-294 RAMPS
0.3 M W OF I-294, DuPage, IL
Built 1958 ADT: 22,000
I- 55 NB TO I-355
UnknownOver: I- 55
1 M W OF LEMONT RD, DuPage, IL
Built 2007 ADT: 77,600
IL 59 NB
UnknownOver: I- 88 EW TOLL-IL 110 CKC
1.2M S IL56, DuPage, IL
Built 2014 ADT: 131,500
IL 59 SB
UnknownOver: I- 88 EW TOLL-IL 110 CKC
1.2M S OF IL56, DuPage, IL
Built 2014 ADT: 105,400
I- 55
UnknownOver: LEMONT RD
1.5 M NW OF WILL CO, DuPage, IL
Built 2022 ADT: 19,600
MEACHAM GROVE TRAI
UnknownOver: ROSELLE ROAD
0.35 MI N US 20, DuPage, IL
Built 2004 ADT: 10,900
IL PRAIRIE PATH
UnknownOver: UPRR, WESLEY ST, FRO
0.46 MI N of IL RT38, DuPage, IL
Built 2010 ADT: 1,000
ILLINOIS PRAIRIE P
UnknownOver: TAYLOR AVENUE
0.6 MI E Main Street, DuPage, IL
Built 2001 ADT: 800
SOO LINE/METRA RR
UnknownOver: COUNTY FARM ROAD
.06 MI S IL-20, DuPage, IL
Built 1990 ADT: 16,200
UNION PACIFIC RR
UnknownOver: COUNTY FARM ROAD
0.8 MI N ILL 38, DuPage, IL
Built 2002 ADT: 15,300
ILL.PRAIRIE PATH B
UnknownOver: FERRY ROAD
.1 MI W IL59, DuPage, IL
Built 2004 ADT: 5,000
GREAT WESTERN TRAI
UnknownOver: GRACE STREET
1 MI S OF NORTH AVE, DuPage, IL
Built 2012 ADT: 5,300
GREAT WESTERN TRAI
UnknownOver: ST. CHARLES ROAD
.25MI E OF GRACE ST, DuPage, IL
Built 2012 ADT: 14,500
Showing 1,651-1,700 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 |