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 (2 OF 5)
UnknownOver: PULASKI RD
1.51 M S ILL 64 P4C, Cook, IL
Built 1900 ADT: 18,300
C&NW RR (3 OF 5)
UnknownOver: PULASKI RD
1.52 M S ILL 64 P4C, Cook, IL
Built 1900 ADT: 18,300
C&NW RR (4 OF 5)
UnknownOver: PULASKI RD
1.53 M S ILL 64 P4C, Cook, IL
Built 1900 ADT: 18,300
C&NW RR (5 OF 5)
UnknownOver: PULASKI RD
1.54 M S ILL 64 P4C, Cook, IL
Built 1900 ADT: 18,300
LAKE ST CTA
UnknownOver: PULASKI RD
0.75 M N I290 P4C, Cook, IL
Built 1900 ADT: 18,300
PULASKI RD
UnknownOver: I-290 - IL 110 & CTA
2.7 M W US 34, Cook, IL
Built 1953 ADT: 205,000
CSX-RR
UnknownOver: PULASKI RD
0.4 M S I290 P4C, Cook, IL
Built 1900 ADT: 14,500
DOUGLAS PK CTA
UnknownOver: PULASKI RD
1.4 M S I290 P4C, Cook, IL
Built 1900 ADT: 13,300
PULASKI RD & RAMPS
UnknownOver: I- 55 STEVENSON
0.92 M S OF 31ST ST, Cook, IL
Built 1963 ADT: 154,400
CNS & CTA RR
UnknownOver: MCCORMICK BLVD
0.2 M N HOWARD P13, Cook, IL
Built 1900 ADT: 30,500
LAKE ST CTA
UnknownOver: SACRAMENTO BLVD
0.6 M N I290 P4C, Cook, IL
Built 1900 ADT: 17,700
SACRAMENTO BLVD
UnknownOver: I-290 - IL 110 & CTA
1.4 M W US 34, Cook, IL
Built 1953 ADT: 115,400
B&OCT RR
UnknownOver: SACRAMENTO BLVD
0.45 M S I290 P4C, Cook, IL
Built 1900 ADT: 11,600
GM&O RR
UnknownOver: CALIFORNIA BLVD
0.3 M S I55 P4C, Cook, IL
Built 1900 ADT: 13,900
IHB RR(NORTH)
UnknownOver: CALIFORNIA BLVD
1.82 M S I55 P6C, Cook, IL
Built 1937 ADT: 13,000
IHB RR (SOUTH)
UnknownOver: CALIFORNIA BLVD
1.84 M S I55 P6C, Cook, IL
Built 1937 ADT: 13,000
C&NW RR
UnknownOver: CLYBOURN AVE
1.66 M NW ILL 64 P3C, Cook, IL
Built 1900 ADT: 10,300
B&OCT RR
UnknownOver: CANAL ST
0.96 M N I55 P5C, Cook, IL
Built 1900 ADT: 15,800
AT&SF RR
UnknownOver: CANAL ST
0.34 M S I55 P5C, Cook, IL
Built 1900 ADT: 13,100
CHB RR
UnknownOver: MORGAN ST
2.5 M N US 12&20 P4, Cook, IL
Built 1900 ADT: 1,350
CRI&P RR
UnknownOver: VINCINNES AVE
0.8 M N US 12&20 P4, Cook, IL
Built 1900 ADT: 8,550
WESTERN AVE(GREGOR
UnknownOver: VERMONT ST
JUST E WESTERN, Cook, IL
Built 1967 ADT: 8,600
WESTERN AVE
UnknownOver: CAL SG CHNL&RR&BRDWY
1.5 M N IL 83, Cook, IL
Built 1966 ADT: 4,300
C&NW RR
UnknownOver: ASHLAND AVE
0.9 M N I290 P5C, Cook, IL
Built 1900 ADT: 18,600
LAKE ST CTA
UnknownOver: ASHLAND AVE
0.62 M N I290 P5C, Cook, IL
Built 1900 ADT: 18,600
ASHLAND AVE
UnknownOver: I-290 - IL 110 & CTA
1 M W IL 1, Cook, IL
Built 1954 ADT: 172,800
B&OCT RR
UnknownOver: ASHLAND AVE
1.07 M S I290 P5C, Cook, IL
Built 1900 ADT: 21,600
C&NW RR
UnknownOver: ASHLAND AVE
1.14 M S I290 P5C, Cook, IL
Built 1900 ADT: 21,600
AT&SF RR
UnknownOver: ASHLAND AVE
0.5 M N I55 P5C, Cook, IL
Built 1900 ADT: 23,200
C&J RR
UnknownOver: ASHLAND AVE
1.35 M S I55 P7C, Cook, IL
Built 1900 ADT: 25,200
IHB RR
UnknownOver: ASHLAND AVE
2.4 M S I55 P7C, Cook, IL
Built 1900 ADT: 20,100
NYC RR
UnknownOver: LUTHER KING DR
0.2 M N I90 P7C, Cook, IL
Built 1900 ADT: 7,950
PC RR
UnknownOver: LUTHER KING DR
0.1 M N I90 P7C, Cook, IL
Built 1900 ADT: 7,950
IC RR
UnknownOver: INDIANA AVE
2.3 M N ILL 83 P4,8C, Cook, IL
Built 1900 ADT: 17,200
CHGO RD-S PARK AVE
UnknownOver: I- 80,294 TRI STATE
1.5 M S US 6, Cook, IL
Built 1958 ADT: 147,000
IHB RR
UnknownOver: COTTAGE GROVE
0.1 M N US 12&20 P8C, Cook, IL
Built 1900 ADT: 9,950
BURNHAM AVE VIAD
UnknownOver: STATE ST & RRS & RIV
0.6 M N SIBLEY AVE, Cook, IL
Built 1976 ADT: 8,000
LAKE COOK RD
UnknownOver: US 41 EDENS
1.2 M N IL 68, Cook, IL
Built 1950 ADT: 71,300
TOWER RD
UnknownOver: I- 94, US41 EDENS
5.5 M N IL 58, Cook, IL
Built 1949 ADT: 104,400
GLENVIEW RD
UnknownOver: I- 94 EDENS
2 M N IL 58, Cook, IL
Built 1949 ADT: 123,400
OLD ORCHARD RD
UnknownOver: I- 94 EDENS
1.5 M N IL 58, Cook, IL
Built 1950 ADT: 114,100
CHURCH ST
UnknownOver: I- 94 EDENS
0.5 M N IL 58, Cook, IL
Built 1950 ADT: 128,500
LINCOLN AVE
UnknownOver: I- 94 EDENS
3.5 M N US 14, Cook, IL
Built 1950 ADT: 130,700
OAKTON ST
UnknownOver: I- 94 EDENS
3 M N US 14, Cook, IL
Built 1950 ADT: 130,700
C&NW RR
UnknownOver: TOUHY AVE
1.8 M E I294 P11, Cook, IL
Built 1941 ADT: 24,300
PRATT AVE
UnknownOver: I- 94 EDENS
1 M N US 14, Cook, IL
Built 1949 ADT: 131,500
DEVON AVE
UnknownOver: I- 94 EDENS
0.5 M N US 14, Cook, IL
Built 1949 ADT: 131,500
C&NW RR
UnknownOver: LAWRENCE AVE
0.05 M W I90 P2C, Cook, IL
Built 1951 ADT: 9,850
LAWRENCE AVE
UnknownOver: I- 90 JFK & CTA
0.6 M NW IL 50, Cook, IL
Built 1958 ADT: 138,300
SOO (AMTK) RR
UnknownOver: LAWRENCE AVE
0.1 M W ILL 50 P2C, Cook, IL
Built 1951 ADT: 22,100
Showing 651-700 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |