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
C&NW RR
UnknownOver: JFK XWAY FEEDER
0.3 M E I90&94 P5C, Cook, IL
Built 1958 ADT: 80,400
I- 90,94 EB TO OHI
UnknownOver: I- 90,94 JFK
0.1 M NW GRAND, Cook, IL
Built 1961 ADT: 199,900
IC RR
UnknownOver: INDIANA AVE
JUST N 16TH P5C, Cook, IL
Built 1900 ADT: 2,950
CTA
UnknownOver: INDIANA AVE
JUST S 40TH P7C, Cook, IL
Built 1900 ADT: 2,950
CTA
UnknownOver: INDIANA AV
JUST S 59TH P7C, Cook, IL
Built 1900 ADT: 2,500
B&OCT RR
UnknownOver: ILL 171(ARCHER AV)
S OF 63RD ST P10, Cook, IL
Built 1939 ADT: 28,400
US 20 WB
UnknownOver: US 20 VILLA ST
1 M E KANE CO, Cook, IL
Built 1961 ADT: 7,700
US 34 (OGDEN AVE)
UnknownOver: I-294 TRI STATE TOLL
AT DU PAGE CO, Cook, IL
Built 1958 ADT: 173,800
BN RR
UnknownOver: US 34 (OGDEN AVE)
0.3 M E US 45 P10, Cook, IL
Built 1900 ADT: 28,200
US 34 (OGDEN AVE)
UnknownOver: RR - IHB
0.4 M E US 45, Cook, IL
Built 1931 ADT: 3,750
CC RR
UnknownOver: US34 OGDEN AV
AT AUSTIN BLVD P16, Cook, IL
Built 1900 ADT: 22,600
IHB RR
UnknownOver: OGDEN AVE
0.25 E ILL 50 P4C,16, Cook, IL
Built 1900 ADT: 19,800
IHB RR
UnknownOver: OGDEN AVE
0.28 M E IL50 P4C,16, Cook, IL
Built 1900 ADT: 19,800
CTA
UnknownOver: OGDEN AVE
0.5 M NE CERMAK P4C, Cook, IL
Built 1900 ADT: 17,700
PC RR
UnknownOver: US 34 (OGDEN AVE)
W WESTERN AVE P4C, Cook, IL
Built 1900 ADT: 19,900
PC RR
UnknownOver: US 34 (OGDEN AVE)
W WESTERN AVE P4C, Cook, IL
Built 1900 ADT: 19,900
C&NW RR
UnknownOver: US 34 (OGDEN AVE)
W WESTERN AVE P4C, Cook, IL
Built 1900 ADT: 19,900
OGDEN AVE
UnknownOver: I-290 - IL 110 & CTA
E DAMEN AVE, Cook, IL
Built 1953 ADT: 189,400
US 14 (NW HWY)
UnknownOver: IL 58 (WOLF RD)
1.5 M E IL 83, Cook, IL
Built 1933 ADT: 19,800
C.W.RR
UnknownOver: US 14 (NW HWY)
0.7 M NW US 45 P11, Cook, IL
Built 1900 ADT: 10,900
SOO(WICT) AMTK. RR
UnknownOver: FOSTER AVE
0.3 M W ILL 50 P2C, Cook, IL
Built 1900 ADT: 21,700
SOO (WICT) AMTK. R
UnknownOver: ELSTON AVE
NW FOSTER AVE P2C, Cook, IL
Built 1900 ADT: 14,200
FOSTER AVE
UnknownOver: I- 94 EDENS
AT IL 50, Cook, IL
Built 1956 ADT: 133,600
C&NW RR
UnknownOver: FOSTER AVE
0.1 M E I94 P2C, Cook, IL
Built 1900 ADT: 23,800
C&NW RR
UnknownOver: FOSTER AVE US 41
1 M W LSD P3C, Cook, IL
Built 1900 ADT: 15,100
CTA ELEVATED
UnknownOver: FOSTER AVE US 41
0.4 M W LSD P3C, Cook, IL
Built 1900 ADT: 14,100
US 20 (LAKE ST)
UnknownOver: IL 59 (SUTTON RD)
0.8 M S OF IL 19, Cook, IL
Built 1990 ADT: 36,700
LAKE SHORE DR
UnknownOver: MICHIGAN AVE NB
1100 N. & 100 E., Cook, IL
Built 1964 ADT: 10,000
CHINATOWN RAMP SB
UnknownOver: I- 55 STEVENSON
0.6 M E I-94, Cook, IL
Built 1965 ADT: 86,900
CHINATOWN RAMP NB
UnknownOver: I- 55 STEVENSON
0.7 M E I-94, Cook, IL
Built 1965 ADT: 86,900
US 30 (LINCOLN HWY
UnknownOver: IL 394
AT 210TH ST, Cook, IL
Built 1954 ADT: 26,800
UP (CSXT) SOO RR
UnknownOver: US 30 (LINCOLN HWY)
2.8 M W ILL 394 P2, Cook, IL
Built 1900 ADT: 18,000
US 30 (LINCOLN HWY
UnknownOver: I- 57
0.6 M E IL 50, Cook, IL
Built 1966 ADT: 79,300
C&NW RR
UnknownOver: WESTERN AVE
0.1 M N I94 P, Cook, IL
Built 1900 ADT: 26,900
B&OCT RR
UnknownOver: ASHLAND AVE
1 M S 127TH P4,24, Cook, IL
Built 1900 ADT: 17,700
B&OCT RR
UnknownOver: ASHLAND AVE
1.1 M S 127TH P4,24, Cook, IL
Built 1900 ADT: 17,700
B&OCT RR
UnknownOver: ASHLAND AVE
1.11 M S 127 P24, Cook, IL
Built 1934 ADT: 17,700
B&OCT RR
UnknownOver: ASHLAND AVE
AT 139TH ST P24, Cook, IL
Built 1900 ADT: 9,900
B&OCT RR
UnknownOver: ASHLAND AVE
N OF 141ST P24, Cook, IL
Built 1900 ADT: 9,900
PC RR
UnknownOver: CRAWFORD AVE
0.5 M S US 30 P21, Cook, IL
Built 1900 ADT: 20,000
EJ&E RR
UnknownOver: CRAWFORD AVE
0.8 M S US 30 P21, Cook, IL
Built 1900 ADT: 20,000
IL 43 (WAUKEGAN R
UnknownOver: I- 94 EDENS SPUR
0.5 M N IL 68, Cook, IL
Built 1958 ADT: 54,800
SOO (WICT) AMTK. R
UnknownOver: ILL 43 (WAUKEGAN RD)
.75 M N GOLF RD P13, Cook, IL
Built 1935 ADT: 18,900
IL 43 (HARLEM AVE
UnknownOver: I- 90 JFK & CTA
0.7 M N FOSTER AVE, Cook, IL
Built 1958 ADT: 174,500
CTA & UPRR
UnknownOver: ILL 43 (HARLEM AV)
1 M N I290 P16,20, Cook, IL
Built 1900 ADT: 32,500
IL 43 (HARLEM AVE
UnknownOver: I-290 & IL 110/CTA/RR
0.5 M N IL 38, Cook, IL
Built 1957 ADT: 143,300
C&IW RR
UnknownOver: ILL 43 (HARLEM AVE)
0.6 M N I55 P10,23, Cook, IL
Built 1900 ADT: 35,500
AT&SF RR
UnknownOver: ILL 43 (HARLEM AVE)
0.55 N I55 P10,23, Cook, IL
Built 1900 ADT: 35,500
IL 43 (HARLEM AVE
UnknownOver: I- 55 STEVENSON
0.47 MI N OF ARCHER, Cook, IL
Built 1964 ADT: 124,500
IL 43 (HARLEM AVE
UnknownOver: US 12,20 (95TH ST)
0.6 M N I-294, Cook, IL
Built 1961 ADT: 28,500
Showing 401-450 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 |