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
SOO RR
UnknownOver: US-20 (LAKE ST)
.9M E OF BRRNGTN RD, Cook, IL
Built 2002 ADT: 39,200
I- 90 WB SKYWAY
UnknownOver: I- 90,94 NB RYAN
DAN RYAN & SKYWAY, Cook, IL
Built 2004 ADT: 301,400
I- 90 EB SKYWAY
UnknownOver: I- 94 DAN RYAN
AT 65TH, Cook, IL
Built 2004 ADT: 301,400
IL 7
UnknownOver: US 45 (LA GRANGE RD)
3.9 M SE OF IL 83, Cook, IL
Built 2007 ADT: 35,700
76TH ST
UnknownOver: I- 94 DAN RYAN
2.4 M N US 12, Cook, IL
Built 2005 ADT: 252,900
I- 57 NB
UnknownOver: I- 94 WB RAMP I-57
0.09 M E OF IL 1, Cook, IL
Built 2007 ADT: 25,400
CERMAK RD (22ND ST
UnknownOver: I-294 TRI STATE
2 M N OF US 34, Cook, IL
Built 2005 ADT: 134,500
IL 68 (DUNDEE RD)
UnknownOver: US 14 (NW HWY)
3 M W OF IL 53, Cook, IL
Built 2008 ADT: 21,300
N&W RR
UnknownOver: 80TH AVE
AT 120TH P19, Cook, IL
Built 1900 ADT: 6,100
CN&W RR
UnknownOver: HOWARD ST
CLARK&HOWARD P1C,6, Cook, IL
Built 1900 ADT: 15,800
CTA
UnknownOver: HOWARD ST
0.25 M E CLARK, Cook, IL
Built 1900 ADT: 15,800
RR
UnknownOver: CRAWFORD AVE
0.25 M S CERMAK P4C, Cook, IL
Built 1900 ADT: 14,800
IC RR
UnknownOver: MAIN ST
0.61 M S US 30 P21, Cook, IL
Built 1900 ADT: 2,700
NS RR
UnknownOver: ASHLAND AVE
N 59TH ST P7C, Cook, IL
Built 1900 ADT: 19,900
WABASH RR
UnknownOver: ASHLAND AVE
S 74TH ST P7C, Cook, IL
Built 1900 ADT: 15,400
CRI&P RR
UnknownOver: MLKING DR
AT 92ND ST, Cook, IL
Built 1900 ADT: 8,200
C&NW RR
UnknownOver: TECHNY RD
0.5 M W ILL 43 P14, Cook, IL
Built 1900 ADT: 7,500
IC RR
UnknownOver: 138TH ST
P4,24, Cook, IL
Built 1954 ADT: 9,550
RR
UnknownOver: 171ST ST
0.75 M E WESTERN P2, Cook, IL
Built 1900 ADT: 10,800
RR
UnknownOver: 171ST ST
0.8 M E WESTERN P2, Cook, IL
Built 1900 ADT: 10,800
RR
UnknownOver: 171ST ST
0.85 M E WESTERN P2, Cook, IL
Built 1900 ADT: 10,800
RR
UnknownOver: 171ST ST
0.9 M E WESTERN P2, Cook, IL
Built 1900 ADT: 10,800
IC RR
UnknownOver: FLOSSMORE RD
0.25 M W WESTERN P2, Cook, IL
Built 1900 ADT: 7,700
IC RR
UnknownOver: VOLLMER RD
0.5 M W WSTERN P2, Cook, IL
Built 1951 ADT: 19,200
CC RR
UnknownOver: GARDNER RD
0.15 S ROOSEVELT P2, Cook, IL
Built 1900 ADT: 1,850
W.C. RR
UnknownOver: WASHINGTON BLVD
P20, Cook, IL
Built 1956 ADT: 5,700
C&NW RAILROAD
UnknownOver: EAST LAKE AVENUE
0.2 MI E PFINGSTEN, Cook, IL
Built 1978 ADT: 22,600
I.C.G. RR MAIN LIN
UnknownOver: SAUK TRAIL
1.2 MI E CICERO AVE, Cook, IL
Built 1983 ADT: 27,300
I.C.G.RR COMMUTER
UnknownOver: SAUK TRAIL
1.2 MI E CICERO AVE, Cook, IL
Built 1983 ADT: 27,300
LAKE COOK RD
UnknownOver: IL 53
0.5 M E OF HICKS RD, Cook, IL
Built 1989 ADT: 51,400
SANDERS RD SB
UnknownOver: I-294(TRI-STATE)
.54M N OF WILLOW RD, Cook, IL
Built 1988 ADT: 130,100
SOO LINE (METRA) R
UnknownOver: LAKE-COOK RD
0.30 MI W IL-43, Cook, IL
Built 1997 ADT: 33,100
C&NW RAILROAD
UnknownOver: LAKE COOK ROAD
0.3 MI W US 41, Cook, IL
Built 1997 ADT: 34,600
88TH AV (CORK)
UnknownOver: I-294
0.3 MI S IL-171, Cook, IL
Built 1992 ADT: 147,600
LAKE COOK RD
UnknownOver: IL 21 (MILWAUKEE)
2.1 M W I-94, Cook, IL
Built 1995 ADT: 33,400
PED/BIKE PATH
UnknownOver: IL 72
0.02M W OF ARL HTS R, Cook, IL
Built 1996 ADT: 26,600
Bartlett Road
UnknownOver: I-90
0.7 Mi E of IL59, Cook, IL
Built 2014 ADT: 141,600
I294NB CD ROAD B
UnknownOver: 147TH
0.6 Mi N of I-57, Cook, IL
Built 2014 ADT: 19,600
The 606
UnknownOver: LAWNDALE AV
1800 N 3700 W, Cook, IL
Built 1915
The 606
UnknownOver: MONTICELLO AV
1800 N 3630 W, Cook, IL
Built 1915
The 606
UnknownOver: CENTRAL PARK AV
1800 N 3600 W, Cook, IL
Built 1915 ADT: 8,750
The 606
UnknownOver: DRAKE AVENUE
1800 N 3530 W, Cook, IL
Built 1915
The 606
UnknownOver: ST. LOUIS AVENUE
1800 N 3500 W, Cook, IL
Built 1915
The 606
UnknownOver: KIMBALL AVENUE
1800 N 3400 W, Cook, IL
Built 1915 ADT: 9,850
The 606
UnknownOver: SPAULDING AVE
1800 N 3300 W, Cook, IL
Built 1915
The 606
UnknownOver: SAWYER AVENUE
1800 N 3230 W, Cook, IL
Built 1915
The 606
UnknownOver: KEDZIE AVENUE
1800 N 3200 W, Cook, IL
Built 1915 ADT: 12,600
The 606
UnknownOver: ALBANY AVENUE
1800 N 3100 W, Cook, IL
Built 1915
The 606
UnknownOver: WHIPPLE ST
1800N 3050W, Cook, IL
Built 1915
The 606
UnknownOver: HUMBOLDT BLVD
1800 N. 3000 W., Cook, IL
Built 1915 ADT: 9,650
Showing 1,101-1,150 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 |