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
I-88
UnknownOver: I294WB & IL38WB RMPS
.3M SO OF IL56, Cook, IL
Built 1960 ADT: 27,000
ROOSEVELT RD
UnknownOver: METRA ELECTRIC RR
1200S.& 200E., Cook, IL
Built 1996 ADT: 1,000
I-294 RAMPS I-55
UnknownOver: JOLIET RD
0.3 M NW I-55, Cook, IL
Built 2002 ADT: 12,500
MCFETRIDGE DRIVE
UnknownOver: LAKE SHORE DRIVE
1326S 400E, Cook, IL
Built 1996 ADT: 136,900
LAKE SHORE DRIVE
UnknownOver: 18TH DRIVE
1800 S Lake Shore Dr, Cook, IL
Built 1996 ADT: 3,000
NB LAKE SHORE DRIV
UnknownOver: TAXI RAMP
2200 S Lake Shore Dr, Cook, IL
Built 1996 ADT: 5,300
CN RR (east track)
UnknownOver: PALATINE ROAD
.38M W of Wolf Rd, Cook, IL
Built 2015 ADT: 32,200
I- 55 EB TO I-94 N
UnknownOver: THROOP ST
0.7 MI. SW I-90,94, Cook, IL
Built 1999 ADT: 2,350
I- 55 EB TO I-94 N
UnknownOver: ARCHER AVE & QUARRY
0.3 M SW I-90,94, Cook, IL
Built 1999 ADT: 22,600
I- 55 EB TO I-94 N
UnknownOver: HALSTED ST
SOUTH SIDE OF I-55, Cook, IL
Built 1997 ADT: 12,100
I- 55 EB TO I-94 S
UnknownOver: HALSTED ST
SOUTH SIDE OF I-55, Cook, IL
Built 1997 ADT: 12,100
I- 55 EB STEVENSON
UnknownOver: ARCHER AV &QUARRY ST
0.3 M SW I-94, Cook, IL
Built 1999 ADT: 22,600
I- 55 WB STEVENSON
UnknownOver: ARCHER AV &QUARRY ST
0.3 M SW I-94, Cook, IL
Built 2000 ADT: 22,600
I- 55 STEVENSON
UnknownOver: DES PLAINES RIVER
0.9 M E OF US 45, Cook, IL
Built 2000 ADT: 2,650
OGDEN AVE
UnknownOver: IL 50 (CICERO AVE)
1.9 MI S OF I-290, Cook, IL
Built 1999 ADT: 37,000
RR - BNSF
UnknownOver: OGDEN AVE
0.1 M E OF IL 50, Cook, IL
Built 2001 ADT: 19,800
FLY-OVER RAMP
UnknownOver: SB I-294
.1M SO 127TH, Cook, IL
Built 2000 ADT: 133,500
US 12,45 SB MANNHE
UnknownOver: I-190 JFK
1 M N LAWRENCE, Cook, IL
Built 2006 ADT: 105,800
US 12,45 NB MANNHE
UnknownOver: I-190 JFK
1 M N LAWRENCE, Cook, IL
Built 2005 ADT: 105,800
SERVICE RD
UnknownOver: OGDEN AVE
EAST OF IL 50, Cook, IL
Built 1999 ADT: 19,800
I- 94 SB BISHOP FO
UnknownOver: 103RD ST
2 M SE OF I-57, Cook, IL
Built 2001 ADT: 15,400
I- 94 NB BISHOP FO
UnknownOver: 103RD ST
2 M SE OF I-57, Cook, IL
Built 2001 ADT: 15,400
TRI-STATE294
UnknownOver: Golf Road
2.1 MI S. US 45, Cook, IL
Built 1999 ADT: 29,400
GREEN BAY ROAD
UnknownOver: HAZEL AVE
0.34 M SE IL-68, Cook, IL
Built 1995 ADT: 600
RR - CN
UnknownOver: US 6 (159TH ST)
0.61 M W IL 1, Cook, IL
Built 2007 ADT: 34,100
RR - METRA & CN
UnknownOver: US 6 (159TH ST)
0.62 MI W IL-1, Cook, IL
Built 2010 ADT: 34,100
IL 171 (ARCHER AVE
UnknownOver: US 12,20,45 LAGRANGE
0.5 M SW I-294, Cook, IL
Built 2003 ADT: 1,900
I-290 EB CD-IL 110
UnknownOver: WOLF RD
1 M W US 45, Cook, IL
Built 2001 ADT: 12,500
I-290 EB CD-IL 110
UnknownOver: HILLSIDE DR
0.7 M W US 12, Cook, IL
Built 2002 ADT: 3,650
US 12,20,45 MANNHE
UnknownOver: I-290 IKE - IL 110 CKC
0.5 M N IL 38, Cook, IL
Built 2000 ADT: 133,500
WESTCHESTER BLVD
UnknownOver: I-290 IKE - IL 110 CKC
3.7 M W IL 43, Cook, IL
Built 2002 ADT: 28,300
PALATINE RD
UnknownOver: IL 21,US 45 MILWKE
1.2 M W I-294, Cook, IL
Built 2005 ADT: 30,500
WENTWORTH AVE
UnknownOver: I- 80,94
2.8 M E OF IL 394, Cook, IL
Built 2004 ADT: 206,200
I- 80,94 KINGERY
UnknownOver: BURNHAM AVE
2.3 M E IL 394, Cook, IL
Built 2004 ADT: 9,500
I- 80,94 KINGERY
UnknownOver: BIKEWAY AVE (RR AVE)
1.8 M E IL 394, Cook, IL
Built 2004 ADT: 3,350
IL 83 (TORRENCE)
UnknownOver: I- 80,94 KINGERY
1.2 M E IL 394, Cook, IL
Built 2005 ADT: 142,800
I- 94 SB TO I-80 E
UnknownOver: I- 80 WB
0.9 M W OF IL-83, Cook, IL
Built 2004 ADT: 132,100
IL 394 NB
UnknownOver: I- 80 KINGERY
I-80 & 94 INTERCH, Cook, IL
Built 2006 ADT: 132,100
IL 394 SB
UnknownOver: I- 80 KINGERY
1.6 M S OF US 6, Cook, IL
Built 2006 ADT: 165,600
THORNTON-LANSING R
UnknownOver: IL 394
.5 MI S. I80/294, Cook, IL
Built 2005 ADT: 89,200
IL 394 NB
UnknownOver: I- 94 EB & THORN CR
ILL 394 I80/294 INT., Cook, IL
Built 2005 ADT: 73,500
170TH ST
UnknownOver: I- 94 BISHOP FORD
1 M S OF US 6, Cook, IL
Built 2004 ADT: 73,500
I- 94 WB TO IL 394
UnknownOver: I- 80,94
RAMP WB TO SB, Cook, IL
Built 2006 ADT: 165,600
I- 80,294 EB TO NB
UnknownOver: I- 80,94 & IL 394
I-80 & 94 INTERCH, Cook, IL
Built 2006 ADT: 89,200
PALATINE RD
UnknownOver: IL 83 (ELMHURST RD)
0.5 M S IL 68, Cook, IL
Built 2005 ADT: 14,900
US 12,45 MANNHEIM
UnknownOver: RR - METRA, CP, RDS
2.0 M S IL 19, Cook, IL
Built 2010 ADT: 4,900
RR - CN
UnknownOver: US 6 (159TH ST)
0.58 M W IL 1, Cook, IL
Built 2010 ADT: 34,100
RR - CN (ACCESS RD
UnknownOver: US 6 (159TH ST)
0.56 M W IL 1, Cook, IL
Built 2010 ADT: 34,100
RR - CN (ACCESS RD
UnknownOver: US 6 (159TH ST)
0.53 M W OF IL 1, Cook, IL
Built 2010 ADT: 34,100
RR - CN
UnknownOver: US 6 (159TH ST)
0.49 M W IL 1, Cook, IL
Built 2010 ADT: 34,100
Showing 1,051-1,100 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 |