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
CH 22A
FairOver: BUREAU CREEK
1.5 M W LAMOILLE, Bureau, IL
Built 1977 Load: 32.4 t ADT: 25
TOWNSHIP ROAD 321
FairOver: COAL CREEK
0.7 M SW OF BUDA, Bureau, IL
Built 1984 Load: 32.4 t ADT: 75
TR 302
FairOver: BR OF MASTERS CREEK
5 MI N OF DOVER, Bureau, IL
Built 1981 Load: 32.4 t ADT: 25
FAS 251
FairOver: ADAMS CREEK
IN CHERRY, Bureau, IL
Built 1997 Load: 32.4 t ADT: 1,000
TOWNSHIP ROAD 270
FairOver: SENACHWINE CREEK
5 MI SE OF TISKILWA, Bureau, IL
Built 1984 Load: 32.4 t ADT: 75
TR 256-D
FairOver: BUREAU CREEK
2 MI E OF TISKILWA, Bureau, IL
Built 1986 Load: 32.4 t ADT: 350
TR 236
FairOver: BUREAU CREEK
E. EDGE OF TISKILWA, Bureau, IL
Built 1995 Load: 32.4 t ADT: 350
TR 252
FairOver: SENACHWINE CREEK
3 MI. SE OF TISKILWA, Bureau, IL
Built 1994 Load: 32.4 t ADT: 25
TOWNSHIP ROAD 312
FairOver: BUREAU CREEK
4.5 M N MALDEN, Bureau, IL
Built 1982 Load: 32.4 t ADT: 25
TR 139
FairOver: BR. W. BUREAU CREEK
6 MI N OF WYANET, Bureau, IL
Built 1980 Load: 32.4 t ADT: 125
TR 269
FairOver: POND CREEK
1 MI. N. OF BUDA, Bureau, IL
Built 1999 Load: 32.4 t ADT: 25
TOWNSHIP ROAD 280
FairOver: BUREAU CREEK
2 M NW DOVER, Bureau, IL
Built 1981 Load: 32.4 t ADT: 200
TOWNSHIP ROAD 109
FairOver: MASTERS CREEK
1 MI W OF GREEN OAK, Bureau, IL
Built 1979 Load: 32.4 t ADT: 125
TOWNSHIP ROAD 58
FairOver: GREEN RIVER
4 MI SE THOMAS, Bureau, IL
Built 1979 Load: 32.4 t ADT: 50
TOWNSHIP ROAD 52
FairOver: HICKORY SMITH DITCH
4.5 MI NE OF MINERAL, Bureau, IL
Built 1980 Load: 32.4 t ADT: 25
TR 36
FairOver: HICKORY SMITH DITCH
3 MI. NE. MINERAL, Bureau, IL
Built 1995 Load: 32.4 t ADT: 25
TR-73A
FairOver: Crooked Creek
3.5 MI E NEW BEDFORD, Bureau, IL
Built 1977 Load: 32.4 t ADT: 50
TOWNSHIP ROAD 1
FairOver: GREEN RIVER
5 MI. N. NEW BEDFORD, Bureau, IL
Built 1982 Load: 32.4 t ADT: 75
TR 116
FairOver: WALNUT DITCH
3 MI NE NEW BEDFORD, Bureau, IL
Built 1988 Load: 32.4 t ADT: 10
TR 229A
FairOver: ADAMS CREEK
1 MI NW OF LADD, Bureau, IL
Built 1983 Load: 32.4 t ADT: 25
TR 214
FairOver: PLOW HOLLOW BRANCH
1.5 MI S OF TISKILWA, Bureau, IL
Built 2007 Load: 32.4 t ADT: 150
TR 1
FairOver: NORTH BUREAU CREEK
3 MI NE VAN ORIN, Bureau, IL
Built 1975 Load: 32.4 t ADT: 75
TOWNSHIP ROAD 82A
FairOver: GREEN RIVER
4 MI NW MANLIUS, Bureau, IL
Built 1982 Load: 32.4 t ADT: 50
TOWNSHIP RD 2
FairOver: KING CREEK
4 MI NW NEPONSET, Bureau, IL
Built 1979 Load: 32.4 t ADT: 75
TOWNSHIP ROAD 60B
FairOver: COAL CREEK
1 MI NW OF SHEFFIELD, Bureau, IL
Built 1988 Load: 32.4 t ADT: 200
TOWNSHIP ROAD 97
FairOver: MASTERS CREEK
5 MI SE OF OHIO, Bureau, IL
Built 1980 Load: 32.4 t ADT: 25
TR 300
FairOver: MASTERS CREEK
6 MI SE OF OHIO, Bureau, IL
Built 1989 Load: 32.4 t ADT: 25
TR 290
FairOver: MASTERS CREEK
2 MI SE OF OHIO, Bureau, IL
Built 1998 Load: 32.4 t ADT: 75
TOWNSHIP ROAD 324
FairOver: BRUSH CREEK
1.5 M NW OF DEPUE, Bureau, IL
Built 1984 Load: 32.4 t ADT: 50
TR 155
FairOver: BRUSH CREEK
1.5 M S OF ARLINGTON, Bureau, IL
Built 1981 Load: 32.4 t ADT: 50
TOWNSHIP ROAD 363
FairOver: SENACHWINE CREEK
5.5 MI S OF TISKILWA, Bureau, IL
Built 1980 Load: 32.4 t ADT: 25
TR 224
FairOver: BR OF SENACHWINE CR
4.5 M NW WHITEFIELD, Bureau, IL
Built 1983 Load: 32.4 t ADT: 10
TOWNSHIP ROAD 277
FairOver: BRANCH OF POND CREEK
0.5 MI S OF WYANET, Bureau, IL
Built 1980 Load: 32.4 t ADT: 50
TR 223A
FairOver: W. BUREAU CREEK
1.5 MI N OF WYANET, Bureau, IL
Built 2004 Load: 32.4 t ADT: 50
TR 204
FairOver: W. BUREAU CREEK
2.5 MI SE OF WYANET, Bureau, IL
Built 1989 Load: 32.4 t ADT: 50
TR223A
FairOver: MAPLE GROVE CREEK
1.5 MI N OF WYANET, Bureau, IL
Built 2004 Load: 32.4 t ADT: 50
TR 277
FairOver: W BUREAU CRK
2 MI SE OF WYANET, Bureau, IL
Built 2002 Load: 32.4 t ADT: 75
TOWNSHIP ROAD 99
FairOver: BUREAU CREEK
4 MI S OF VAN ORIN, Bureau, IL
Built 1982 Load: 32.4 t ADT: 75
TR 345
FairOver: SILVER CREEK
6 MI SE OF BUDA, Bureau, IL
Built 1977 Load: 32.4 t ADT: 50
FAS 253/CH 10
FairOver: ILL & MISS CANAL
1 MI N OF MINERAL, Bureau, IL
Built 1983 Load: 32.4 t ADT: 250
TR 92
FairOver: ARNOLD CREEK
1 MI SOUTH OF BRUSSE, Calhoun, IL
Built 1978 Load: 32.4 t ADT: 225
TR 92
FairOver: METZ CREEKBRANCH
1 MI SOUTHOF BRUSSEL, Calhoun, IL
Built 1981 Load: 32.4 t ADT: 175
FAS 769
FairOver: MICHAEL HOLLOW CREEK
4.75M E HAMBURG, Calhoun, IL
Built 1984 Load: 32.4 t ADT: 350
TR 87A
FairOver: METZ CREEK
0.5 W. BRUSSELS, Calhoun, IL
Built 1991 Load: 32.4 t ADT: 250
TR 39
FairOver: IRISH HOLLOW CREEK
1 1/2 NE HAMBURG, Calhoun, IL
Built 1992 Load: 32.4 t ADT: 50
TR65
FairOver: TURNER CREEK
1310N 1480E, Calhoun, IL
Built 1993 Load: 32.4 t ADT: 50
TR105
FairOver: CREEK
270N 2200E, Calhoun, IL
Built 1994 Load: 32.4 t ADT: 100
BELLEVIEW RD
FairOver: BELLEVIEW HOLLOW CK
1.3MI E OF IL 96, Calhoun, IL
Built 1999 Load: 32.4 t ADT: 275
FAS 755
FairOver: INDIAN CREEK
2.7 MI S OF HAMBURG, Calhoun, IL
Built 2001 Load: 32.4 t ADT: 225
TR 15
FairOver: BRANCH E. PATHER CK.
1.25 MI N BELLVIEW, Calhoun, IL
Built 2000 Load: 32.4 t ADT: 50
Showing 7,251-7,300 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.