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
WOLF RD.
FairOver: FEEHANVILLE DITCH
0.68M.N.OF CENTRAL, Cook, IL
Built 1991 Load: 32.4 t ADT: 14,600
I- 90,94 JFK
FairOver: AIR
BETW LOGAN & WESTERN, Cook, IL
Built 1960 Load: 32.4 t ADT: 215,600
IL 64 (NORTH AVE)
FairOver: ADDISON CREEK
0.3 M W US 45, Cook, IL
Built 1999 Load: 32.4 t ADT: 34,800
LAKE SHORE DRIVE
FairOver: Field Museum Concour
1140 S Lake Shore Dr, Cook, IL
Built 1996 Load: 32.4 t ADT: 128,500
LAKE SHORE DRIVE
FairOver: 17TH ST CONCOURSE
400 E 1700 S, Cook, IL
Built 1996 Load: 32.4 t ADT: 135,600
123RD ST & PULASKI
FairOver: STONEY CREEK
AT PULASKI RD., Cook, IL
Built 1974 Load: 32.4 t ADT: 8,400
BARRINGTON RD
FairOver: E BRANCH POPLAR CK
0.5 M S OF IL 72, Cook, IL
Built 1985 Load: 32.4 t ADT: 29,900
IL 50 (CICERO AVE
FairOver: BUTTERFIELD CREEK
0.5 M S VOLLMER RD, Cook, IL
Built 2003 Load: 32.4 t ADT: 16,800
127TH ST
FairOver: NAVAJO CREEK
0.1 M E OF IL 43, Cook, IL
Built 2003 Load: 32.4 t ADT: 12,300
WOOD ST
FairOver: CAL UNION DITCH
0.2 M S US 6, Cook, IL
Built 2003 Load: 32.4 t ADT: 7,600
ROBERTS ROAD
FairOver: STONY CREEK
0.3 M N 111TH P19, Cook, IL
Built 1932 Load: 32.4 t ADT: 14,400
CENTRAL RD
FairOver: Land and Salt Creek
0.56MI W Roselle Rd, Cook, IL
Built 2018 Load: 32.4 t ADT: 6,250
175th Street
FairOver: Cherry Creek
0.5 MI E. of Kedzie Ave, Cook, IL
Built 1976 Load: 32.4 t ADT: 12,300
SCHOENBECK RD
FairOver: MCDONALD CREEK
0.7 M N PALATINE P25, Cook, IL
Built 1961 Load: 32.4 t ADT: 4,200
GARDNER RD
FairOver: ADDISON CR
0.2 M S ROOSEVELTP20, Cook, IL
Built 1957 Load: 32.4 t ADT: 1,850
FAU-2831 (Kedzie A
FairOver: Midlothian Creek
0.4M.S.OF 135TH ST., Cook, IL
Built 1958 Load: 32.4 t ADT: 10,700
HINTZ ROAD
FairOver: WHEELING DRN DITCH
0.1M E WOLF ROAD, Cook, IL
Built 1994 Load: 32.4 t ADT: 8,850
TECHNY ROAD
FairOver: N. BR CHICAGO RIVER
0.4 M E IL43 P14, Cook, IL
Built 1993 Load: 32.4 t ADT: 7,500
SAUK TRAIL
FairOver: REICHART CREEK
0.2M.W.OF IL-394, Cook, IL
Built 1989 Load: 32.4 t ADT: 18,300
WOLF RD.
FairOver: RELOC.FLAG CREEK
0.2M.N.OF I-55, Cook, IL
Built 1991 Load: 32.4 t ADT: 9,850
143RD STREET
FairOver: TINLEY CREEK
0.3 M W OF RIDGELAND, Cook, IL
Built 1997 Load: 32.4 t ADT: 20,300
ASHLAND AVE
FairOver: S BR CHICAGO RIVER
2605 S & 1600 W, Cook, IL
Built 1938 Load: 32.4 t ADT: 23,200
CANAL ST
FairOver: S BR CHICAGO RIVER
500 W & 2021 S, Cook, IL
Built 1948 Load: 32.4 t ADT: 15,800
DAMEN AVE
FairOver: S BR CHICAGO RIVER
2725 S DAMEN AV, Cook, IL
Built 1930 Load: 32.4 t ADT: 21,900
W MONROE ST
FairOver: S BR CHICAGO RIV
378 W & 100 S, Cook, IL
Built 1919 Load: 32.4 t ADT: 4,650
N WELLS ST
FairOver: MAIN BR CHICAGO RIV
200 W & 309 N, Cook, IL
Built 1922 Load: 32.4 t ADT: 10,500
ADDISON ST
FairOver: N BR CHICAGO RIVER
3600 N & 2700 W, Cook, IL
Built 1920 Load: 32.4 t ADT: 19,100
CAMPBELL
FairOver: SALT CREEK
0.6 E 53/2.4 N 62P18, Cook, IL
Built 1970 Load: 32.4 t ADT: 2,350
NORMAL AVE
FairOver: AUBURN PARK LAGOON
7825S 500W, Cook, IL
Built 1923 Load: 32.4 t ADT: 500
EGGLESTON AVE
FairOver: AUBURN PARK LAGOON
7750S 430W, Cook, IL
Built 1923 Load: 32.4 t ADT: 225
PULASKI ROAD
FairOver: BNSF RAILROAD TRACKS
3800S 4000W, Cook, IL
Built 1928 Load: 32.4 t ADT: 18,800
PULASKI RD
FairOver: RR Track&Parking Lot
3900 S & 4000 W, Cook, IL
Built 1928 Load: 32.4 t ADT: 37,700
CLARK ST
FairOver: UNUSED LAND
200W.& 1200S., Cook, IL
Built 1921 Load: 32.4 t ADT: 11,500
N HALSTED ST
FairOver: N BR CANAL
1047 N Halsted, Cook, IL
Built 2011 Load: 32.4 t ADT: 12,050
PARK DRIVE
FairOver: PARKING GARAGE
350E-400NTO500N, Cook, IL
Built 1990 Load: 32.4 t ADT: 1,000
W TAYLOR ST
FairOver: SERVICE ROAD
400W & 1000S, Cook, IL
Built 2006 Load: 32.4 t ADT: 6,650
Commerce Drive
FairOver: W Br. of Salt Creek
.1 M W Plum Grove Rd, Cook, IL
Built 1997 Load: 32.4 t ADT: 1,450
FULLERTON PARKWAY
FairOver: LINCOLN PK LAGOON
2400 N. & 100 E., Cook, IL
Built 2012 Load: 32.4 t ADT: 21,300
Homan Avenue
FairOver: Stoney Creek
0.1 MI N 127TH ST, Cook, IL
Built 1967 Load: 32.4 t ADT: 825
LOIS DR
FairOver: SALT CREEK
2 E 53/ .25 N 58 P5C, Cook, IL
Built 1982 Load: 32.4 t ADT: 950
I-90 SKYWAY
FairOver: CHGO.SHORT LINE RR
0.13 M SE COMM AV, Cook, IL
Built 1958 Load: 32.4 t ADT: 28,700
LASALLE DR
FairOver: SHARED USE PATH
1716 N 78 W, Cook, IL
Built 1980 Load: 32.4 t ADT: 21,500
WELLS ST
FairOver: Parking Area
200W.& 340N., Cook, IL
Built 1989 Load: 32.4 t ADT: 10,500
NORMAL AVE
FairOver: AUBURN PARK LAGOON
7850S 500W, Cook, IL
Built 1923 Load: 32.4 t ADT: 500
EGGLESTON AVENUE
FairOver: AUBURN PARK LAGOON
7800S 430W, Cook, IL
Built 1923 Load: 32.4 t ADT: 225
WASHINGTON ST
FairOver: STREET CAR TUNNEL
100N&500W.TO540 W., Cook, IL
Built 1989 Load: 32.4 t ADT: 9,600
ROOSEVELT ROAD
FairOver: LAND
1200S 30W TO 100W, Cook, IL
Built 1995 Load: 32.4 t ADT: 20,200
ROOSEVELT RD
FairOver: PLYMOUTH COURT
1200S 30W, Cook, IL
Built 1995 Load: 32.4 t ADT: 20,200
JACKSON BOULEVARD
FairOver: PEDESTRIAN UNDERPASS
300S 3700W, Cook, IL
Built 1996 Load: 32.4 t ADT: 7,900
NORTH DAMEN AVENUE
FairOver: N BRCH CHICAGO RIVER
2600 N., 2000 W., Cook, IL
Built 1999 Load: 32.4 t ADT: 10,150
Showing 7,651-7,700 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.