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: WILLOW RD
2.2 M E I294 P14, Cook, IL
Built 1948 ADT: 31,700
WILLOW RD
UnknownOver: RR - METRA
1 M W IL 43, Cook, IL
Built 1942 ADT: 2,200
WILLOW RD
UnknownOver: I- 94, US41 EDENS
4.4 M N IL 58, Cook, IL
Built 1949 ADT: 113,400
WILLOW SPRINGS RD
UnknownOver: I- 55 STEVENSON
1 M W US 45, Cook, IL
Built 1963 ADT: 130,900
WILLOW SPRINGS RD
UnknownOver: I-294 TRI STATE TOLL
0.2 M S I-55, Cook, IL
Built 1958 ADT: 139,900
LAKE AVE
UnknownOver: I- 94 EDENS
2.7 M N IL 58, Cook, IL
Built 1950 ADT: 114,000
CRAWFORD AVE
UnknownOver: I- 80
1.2 M E IL 50, Cook, IL
Built 1967 ADT: 58,900
DEVON AVE
UnknownOver: I-290
1.3 M N of IL 19, Cook, IL
Built 2014 ADT: 178,400
C&NW RR
UnknownOver: CENTRAL RD
0.1 M E I294 P11,14, Cook, IL
Built 1900 ADT: 10,600
C&NW RR
UnknownOver: GRAND AVE
0.4 M E I294 P9, Cook, IL
Built 1900 ADT: 23,200
AT&SF RR
UnknownOver: STEPHEN ST
N OF LEMONT P8, Cook, IL
Built 1900 ADT: 1,900
SAUK TRAIL
UnknownOver: I- 57
1.6 M S US 30, Cook, IL
Built 1966 ADT: 100
183RD ST
UnknownOver: I- 80
0.5 M SW I-57, Cook, IL
Built 1963 ADT: 90,800
183RD ST
UnknownOver: I- 57
0.5 M S I-80, Cook, IL
Built 1965 ADT: 75,700
CMSTP&P RR
UnknownOver: LAWRENCE AVE
0.2 M E I294 P9, Cook, IL
Built 1900 ADT: 18,400
W.C.RR
UnknownOver: LAWRENCE AVE
0.21 M E I294 P9, Cook, IL
Built 1900 ADT: 18,400
COUNTY LINE RD
UnknownOver: I- 55 STEVENSON
2.6 M W US 45, Cook, IL
Built 1959 ADT: 152,500
US 20 WB (LAKE ST)
UnknownOver: IL 64 (NORTH AVE)
2 M N US 45, Cook, IL
Built 1931 ADT: 28,700
C&NW RR
UnknownOver: US 20 (LAKE ST)
1.81 M W US 45 P20, Cook, IL
Built 1900 ADT: 23,000
C&NW RR
UnknownOver: US 20 (LAKE ST)
1.77 M W US 45 P20, Cook, IL
Built 1927 ADT: 23,000
C&NW RR
UnknownOver: US 20 (LAKE ST)
1.76 M W US 45 P20, Cook, IL
Built 1900 ADT: 23,000
C&NW RR
UnknownOver: US 20 (LAKE ST)
1.75 M W US 45 P20, Cook, IL
Built 1927 ADT: 23,000
IHB RR (WEST)
UnknownOver: US 20 (LAKE ST)
0.75 M E US 45 P20, Cook, IL
Built 1900 ADT: 20,100
IHB RR (EAST)
UnknownOver: US 20 (LAKE ST)
0.78 M E US 45 P20, Cook, IL
Built 1900 ADT: 20,100
WISC.CENTRAL RR
UnknownOver: LAKE ST
0.8 M W ILL 43 P20, Cook, IL
Built 1900 ADT: 9,700
IHB RR
UnknownOver: WASHINGTON BLVD
0.3 M E IL 50 P4C, Cook, IL
Built 1900 ADT: 8,850
C&NW RR
UnknownOver: WARREN BLVD
2.8 M E IL 50 P4C, Cook, IL
Built 1900 ADT: 3,400
WASHINGTON BLVD
UnknownOver: I- 90,94 JFK
0.5 M N I-290, Cook, IL
Built 1956 ADT: 225,700
RANDOLPH ST
UnknownOver: I- 90,94 JFK
0.6 M N I-290, Cook, IL
Built 1956 ADT: 217,500
C&NW RR
UnknownOver: WASHINGTON BLVD
2.8 M E ILL 50 P4C, Cook, IL
Built 1900 ADT: 4,100
ELSTON AVE
UnknownOver: I- 94 EDENS
0.6 M N I-90,94, Cook, IL
Built 1957 ADT: 133,600
C&NW RR
UnknownOver: ELSTON AVE
0.2 M SE I94 P2C, Cook, IL
Built 1900 ADT: 13,800
C&NW RR
UnknownOver: ELSTON AVE
0.8 M NW ILL 64 P3C, Cook, IL
Built 1900 ADT: 8,250
C&NW RR (NORTH)
UnknownOver: ASHLAND AVE
0.1 M N I90&94 P3C, Cook, IL
Built 1900 ADT: 26,200
C&NW RR (SOUTH)
UnknownOver: ASHLAND AVE
0.09 M N I90&94 P3C, Cook, IL
Built 1900 ADT: 26,200
GTW RR
UnknownOver: INDIANA AVE
0.04 M S US 6 P24, Cook, IL
Built 1900 ADT: 12,600
THORTON/VINCENNES
UnknownOver: I- 80, 294
1.2 M E IL 1, Cook, IL
Built 1958 ADT: 147,000
GLENWOOD DYER RD
UnknownOver: IL 394
3.1 M S I-80, Cook, IL
Built 1954 ADT: 49,300
CMSTP&P RR
UnknownOver: ILL 64 (NORTH AVE)
0.2 M E IL 50 P2C,4C, Cook, IL
Built 1900 ADT: 21,800
C&NW RR
UnknownOver: ILL 64 (NORTH AVE)
0.25 M E ILL50 P2C,4, Cook, IL
Built 1900 ADT: 21,800
SOO (AMTK) RR
UnknownOver: ILL 64 (NORTH AVE)
1.3 M E IL 50 P2C,4C, Cook, IL
Built 1900 ADT: 22,800
C&NW RR
UnknownOver: ILL 64 (NORTH AVE)
0.1 M E I94 P3C,5C, Cook, IL
Built 1900 ADT: 28,500
CERMAK RD (22ND ST
UnknownOver: RR - IHB & GARDNER
0.8 M E US 45, Cook, IL
Built 1961 ADT: 1,550
CERMAK RD (22ND ST
UnknownOver: 25TH AVE
1 M E US 45, Cook, IL
Built 1961 ADT: 7,450
BRC RR (WEST)
UnknownOver: CERMAK (22ND ST)
0.2 M E IL 50 P4C,16, Cook, IL
Built 1900 ADT: 15,100
BRC RR (EAST)
UnknownOver: CERMAK (22ND ST)
0.22 M E IL50 P4C,16, Cook, IL
Built 1900 ADT: 15,100
BN RR
UnknownOver: CERMAK (22ND ST)
1.7 M E ILL 50 P4C, Cook, IL
Built 1900 ADT: 13,600
RR
UnknownOver: CERMAK (22ND ST)
0.19 M W WESTERN P4C, Cook, IL
Built 1900 ADT: 13,300
RR
UnknownOver: CERMAK (22ND ST)
0.17 M W WESTERN P4C, Cook, IL
Built 1900 ADT: 13,300
RR
UnknownOver: CERMAK (22ND ST)
0.15 M W WESTERN P4C, Cook, IL
Built 1900 ADT: 13,300
Showing 551-600 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 |