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
TR 54 A
FairOver: FREEDWELL BRANCH
3 MI NW OF SIDELL, Vermilion, IL
Built 1990 Load: 32.4 t ADT: 50
TR 90 A
FairOver: BAUM BRANCH
2.5 MI N SIDELL, Vermilion, IL
Built 1990 Load: 32.4 t ADT: 50
CH 11
FairOver: STREAM
3.5 MI N OF MUNCIE, Vermilion, IL
Built 1991 Load: 32.4 t ADT: 125
FAS 1507(TR 249)
FairOver: GLENBURN CREEK
1 MI N OF OAKWOOD, Vermilion, IL
Built 2000 Load: 32.4 t ADT: 450
TR 216
FairOver: BUTLER BRANCH
0.5 MI NW OF CATLIN, Vermilion, IL
Built 1993 Load: 32.4 t ADT: 50
TR 44
FairOver: WHISKEY CREEK
1.7 MI SE OF RANKIN, Vermilion, IL
Built 2002 Load: 32.4 t ADT: 50
TR 275
FairOver: LICK CREEK
1 MI E OF DANVILLE, Vermilion, IL
Built 1994 Load: 32.4 t ADT: 225
TR 27
FairOver: STREAM
3 MI S CHENEYVILLE, Vermilion, IL
Built 2000 Load: 32.4 t ADT: 50
TR 315
FairOver: JORDAN CREEK
2.5 MI NE FAIRMOUNT, Vermilion, IL
Built 1998 Load: 32.4 t ADT: 50
TR 217
FairOver: STREAM
2120 N 1400 E, Vermilion, IL
Built 2000 Load: 32.4 t ADT: 550
TR 443
FairOver: YANKEE BRANCH
2 MI N OF HUMRICK, Vermilion, IL
Built 2000 Load: 32.4 t ADT: 100
TR 12
FairOver: SALT FORK RIVER TRIB
5 MI W OF FAIRMOUNT, Vermilion, IL
Built 1998 Load: 32.4 t ADT: 50
TR 365
FairOver: OLIVE BRANCH
5.5 MI SW FAIRMOUNT, Vermilion, IL
Built 2010 Load: 32.4 t ADT: 50
TR 6 A
FairOver: SALT FORK
1.5 MI NE OF HOMER, Vermilion, IL
Built 1993 Load: 32.4 t ADT: 50
TR 383
FairOver: FAYETTE CREEK
4 MI S OF CATLIN, Vermilion, IL
Built 2000 Load: 32.4 t ADT: 50
TR 35
FairOver: STREAM
4.5 MI NE ROSSVILLE, Vermilion, IL
Built 1995 Load: 32.4 t ADT: 75
TR 41
FairOver: MIDDLE BRANCH
5 MI NE ROSSVILLE, Vermilion, IL
Built 1991 Load: 32.4 t ADT: 50
TR 421
FairOver: LITTLE VERMILION RIV
3.5 MI NE ALLERTON, Vermilion, IL
Built 1993 Load: 32.4 t ADT: 20
TR 445
FairOver: FREEDWELL BRANCH
2 MI NW OF SIDELL, Vermilion, IL
Built 1994 Load: 32.4 t ADT: 20
TR 13
FairOver: STREAM
2 MI SE EAST LYNN, Vermilion, IL
Built 1994 Load: 32.4 t ADT: 20
TR 344
FairOver: PAINTER CREEK
2 MI NW OF BISMARCK, Vermilion, IL
Built 1994 Load: 32.4 t ADT: 75
TR 13
FairOver: FOUNTAIN CREEK TRIB
2 MI SE OF EAST LYNN, Vermilion, IL
Built 1993 Load: 32.4 t ADT: 50
TR 443
FairOver: LITTLE VERMILION RIV
3 MI N OF HUMRICK, Vermilion, IL
Built 1995 Load: 32.4 t ADT: 100
TR 28
FairOver: GOODALL BRANCH
3 MI E OF ALLERTON, Vermilion, IL
Built 1995 Load: 32.4 t ADT: 75
TR 147
FairOver: STREAM
3 MI N DANVILLE, Vermilion, IL
Built 1996 Load: 32.4 t ADT: 75
TR 145
FairOver: STREAM
1.5 MI S JAMESBURG, Vermilion, IL
Built 1995 Load: 32.4 t ADT: 200
TR 6
FairOver: STONY CREEK
4 MI NW FITHIAN, Vermilion, IL
Built 2005 Load: 32.4 t ADT: 50
TR 397
FairOver: BAUM CREEK
2.5 MI SW JAMAICA, Vermilion, IL
Built 1994 Load: 32.4 t ADT: 50
FAS 511(CH 16)
FairOver: LITTLE VERMILION RIV
.6 MI S INDIANOLA, Vermilion, IL
Built 1995 Load: 32.4 t ADT: 300
TR 41
FairOver: STREAM
1 MI E OF ROSSVILLE, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 50
TR 261
FairOver: STREAM
1 MI N OF FITHIAN, Vermilion, IL
Built 2001 Load: 32.4 t ADT: 125
CH3
FairOver: STREAM
3/4 MI N ALVIN, Vermilion, IL
Built 2003 Load: 32.4 t ADT: 600
TR 261
FairOver: STREAM
2.4 MI NW FITHIAN, Vermilion, IL
Built 2006 Load: 32.4 t ADT: 125
FAS 496(CH 14)
FairOver: MIDDLE BRANCH
3 MI E ROSSVILLE, Vermilion, IL
Built 2010 Load: 32.4 t ADT: 400
CH 3
FairOver: EAST BRANCH TRIB
2 MI N OF ALVIN, Vermilion, IL
Built 2001 Load: 32.4 t ADT: 350
TR 130
FairOver: LITTLE VERMILION RIV
2 MI SW INDIANOLA, Vermilion, IL
Built 1994 Load: 32.4 t ADT: 50
TR 174
FairOver: DRAINAGE DITCH
4 MI W HOOPESTON, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 50
TR 106
FairOver: SALT FORK
2.5 MI SW OAKWOOD, Vermilion, IL
Built 2002 Load: 32.4 t ADT: 50
TR 84 A
FairOver: STREAM
1 MI NE FAIRMOUNT, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 50
CH 1
FairOver: W BRANCH NORTH FORK
2 MI N OF HENNING, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 425
TR 432
FairOver: EAST BRANCH
5 MI NE OF ALVIN, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 25
TR 389
FairOver: BAUM BRANCH
3 MI SW JAMAICA, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 100
TR 60
FairOver: STREAM
2 MI E OF RANKIN, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 50
TR 420
FairOver: STREAM
3 MI SE RIDGEFARM, Vermilion, IL
Built 2001 Load: 32.4 t ADT: 75
TR 10
FairOver: SALT FORK
5 MI NW FAIRMOUNT, Vermilion, IL
Built 2000 Load: 32.4 t ADT: 50
TR 317
FairOver: SALT FORK TRIB
3 MI NW OF CATLIN, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 275
TR 317
FairOver: SALT FORK TRIB
3.5 MI W OF CATLIN, Vermilion, IL
Built 1999 Load: 32.4 t ADT: 275
TR 324
FairOver: STREAM
E EDGE VERM GROVE CE, Vermilion, IL
Built 1996 Load: 32.4 t ADT: 75
TR 135
FairOver: STREAM
6 MI SW OF POTOMAC, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 50
TR 164
FairOver: SWANK CREEK
2 MI N OF INDIANOLA, Vermilion, IL
Built 1997 Load: 32.4 t ADT: 50
Showing 9,751-9,800 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.