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 43 (HARLEM AVE
UnknownOver: I- 80
0.5 M S 183RD ST, Cook, IL
Built 1967 ADT: 100,400
W.C.RR
UnknownOver: ILL 19 (IRVING PK)
0.6 M E I294, Cook, IL
Built 1900 ADT: 28,000
SOO (AMTK) RR
UnknownOver: ILL 19 (IRVING PK)
0.5 M W I94&90 P2C, Cook, IL
Built 1900 ADT: 19,700
C&NW RR
UnknownOver: ILL 19 (IRVING PK)
0.4 M W I94, Cook, IL
Built 1900 ADT: 19,700
C&NW RR
UnknownOver: ILL 19 (IRVING PK)
0.1 M W I90&94 P2C, Cook, IL
Built 1900 ADT: 28,800
C&NW RR
UnknownOver: ILL 19 (IRVING PK)
1 M E CHGO RIV P3C, Cook, IL
Built 1900 ADT: 29,000
US 12,45 MANNHEIM
UnknownOver: IL 64 (NORTH AVE)
0.7 M N US 20, Cook, IL
Built 1931 ADT: 40,900
EJ&E RR
UnknownOver: ILL 58
1 M W ILL 59 P7, Cook, IL
Built 1900 ADT: 11,800
C&NW RR
UnknownOver: ILL 58
0.7 M E US 45 P11, Cook, IL
Built 1900 ADT: 21,000
SOO (WICT) AMTK. R
UnknownOver: GOLF ROAD
0.5 M E ILL 43 P13, Cook, IL
Built 1900 ADT: 33,400
C&NW RR (WEST)
UnknownOver: DEMPSTER ST
0.5 W SHERIDAN P6, Cook, IL
Built 1900 ADT: 950
CTA (EAST)
UnknownOver: DEMPSTER ST
0.5 W SHERIDAN P6, Cook, IL
Built 1900 ADT: 950
CMSTP+P RR + CTA
UnknownOver: SHERIDAN RD
0.2 M N DEVON P1C, Cook, IL
Built 1900 ADT: 17,200
US 14 (PETERSON AV
UnknownOver: I- 94 EDENS
0.5 M S DEVON, Cook, IL
Built 1948 ADT: 137,900
C&NW RR
UnknownOver: US 14 (PETERSON AV)
0.7 M E I94 P2C, Cook, IL
Built 1900 ADT: 25,800
C&NW RR
UnknownOver: US 14 (PETERSON AV)
1 M E I94 P2C, Cook, IL
Built 1900 ADT: 25,800
C&NW RR
UnknownOver: US 14 (PETERSON AV)
0.7 M E WESTERN P3C, Cook, IL
Built 1900 ADT: 21,800
CTA
UnknownOver: BRYN MAWR AVE
0.25 M W LSD P3C, Cook, IL
Built 1900 ADT: 11,450
IL 53 SB
UnknownOver: US 12 (RAND RD)
0.5 M S IL 68, Cook, IL
Built 1965 ADT: 30,800
IL 53 FAP 342
UnknownOver: Anderson Dr MS 3240
1 M S US 12, Cook, IL
Built 1965 ADT: 1,500
IL 53 NB
UnknownOver: PALATINE RD
1.9 S IL 68, Cook, IL
Built 1964 ADT: 37,000
IL 53 NB
UnknownOver: US 14 NW HWY & UP RR
1 M S PALATINE RD, Cook, IL
Built 1964 ADT: 18,300
IL 53 NB
UnknownOver: INDUSTRIAL AVE
0.5 M N EUCLID, Cook, IL
Built 1963 ADT: 4,150
IL 53 NB
UnknownOver: KIRCHOFF RD
0.5 M S EUCLID, Cook, IL
Built 1963 ADT: 7,800
IL 53 NB
UnknownOver: IL 62 ALGONQUIN RD
0.3 M N I-90 NW TOLL, Cook, IL
Built 1962 ADT: 25,200
CRI&P RR
UnknownOver: US 6 (159TH ST)
0.2 M W ILL 50 P3, Cook, IL
Built 1900 ADT: 29,100
UP (CSXT) SOO RR
UnknownOver: US 6 (159TH ST)
1.3 M E ILL 1 P24, Cook, IL
Built 1941 ADT: 37,600
US 6 (159TH ST)
UnknownOver: I- 94 BISHOP FORD
0.7 E COTTAGE GROVE, Cook, IL
Built 1947 ADT: 138,700
39TH ST (PERSHING)
UnknownOver: RACINE AVE & RR
1.3 W I-94, Cook, IL
Built 1936 ADT: 2,450
C&WI RR
UnknownOver: 39TH ST
0.3 W I90&94 P5C,7C, Cook, IL
Built 1900 ADT: 15,800
39TH ST (PERSHING)
UnknownOver: I- 90,94 DAN RYAN
1.7 M S I-55, Cook, IL
Built 1962 ADT: 315,000
PC RR
UnknownOver: 39TH ST
0.1 E I90&94 P5C,7C, Cook, IL
Built 1900 ADT: 10,100
IL 50 (CICERO AVE
UnknownOver: I- 90 JFK & CTA
AT WILSON, Cook, IL
Built 1958 ADT: 138,300
C&NW RR
UnknownOver: ILL 50 (CICERO AVE)
0.13 M N MONTRSE P2C, Cook, IL
Built 1900 ADT: 16,200
SOO (AMTK) RR
UnknownOver: ILL 50 (CICERO AVE)
0.15 M N MONTRSE P2C, Cook, IL
Built 1900 ADT: 16,200
SOO RR
UnknownOver: ILL 50 (CICERO AVE)
0.4 M N ILL 64 P2C, Cook, IL
Built 1900 ADT: 25,800
LAKE ST CTA
UnknownOver: ILL 50 (CICERO AVE)
1 M N I290 P4C, Cook, IL
Built 1900 ADT: 26,600
IL 50 (CICERO AVE
UnknownOver: I-290 - IL 110 & CTA
AT 600 S PAGE, Cook, IL
Built 1954 ADT: 181,400
RR - BNSF
UnknownOver: IL 50 (CICERO AVE)
1.9 M S I-290, Cook, IL
Built 1964 ADT: 37,000
RR - BNSF
UnknownOver: 26TH ST
0.1 M E IL 50, Cook, IL
Built 1964 ADT: 10,150
RR - BNSF
UnknownOver: IL 50 (CICERO AVE)
0.1 M N I-55, Cook, IL
Built 1963 ADT: 50,400
GM&O RR
UnknownOver: ILL 50 (CICERO AVE)
0.1 M S I55 P6C,23, Cook, IL
Built 1963 ADT: 58,700
IHB RR
UnknownOver: ILL 50 (CICERO AVE)
0.52 N 55TH P6C, Cook, IL
Built 1955 ADT: 48,700
BRC RR
UnknownOver: ILL 50 (CICERO AVE)
0.5 N 55TH P6C,23, Cook, IL
Built 1955 ADT: 48,700
IL 50 (CICERO AVE
UnknownOver: I-294 TRI STATE TOLL
0.1 M N 127TH, Cook, IL
Built 1958 ADT: 133,000
CRI&P RR
UnknownOver: ILL 50 (CICERO AVE)
0.2 M N US 6 P3, Cook, IL
Built 1900 ADT: 25,700
N&W RR
UnknownOver: ILL 83 (CAL SAG RD)
0.05 M E ILL 7 P19, Cook, IL
Built 1900 ADT: 13,000
CRI&P RR(WEST)
UnknownOver: BROADWAY
0.1 M W WESTERN P26, Cook, IL
Built 1900 ADT: 4,300
CRI&P RR(EAST)
UnknownOver: BROADWAY
0.09 W WESTERN P26, Cook, IL
Built 1900 ADT: 4,300
RR - IHB
UnknownOver: US 12,20 (95TH ST)
0.2 M W IL 43, Cook, IL
Built 1961 ADT: 28,500
Showing 451-500 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 |