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 72 A
FairOver: STREAM
.25 MI S OF CH 14, Edgar, IL
Built 1984 Load: 32.4 t ADT: 50
TR 213
FairOver: BUCK #7 DRAINAGE DIT
3 MI SE OF REDMON, Edgar, IL
Built 1995 Load: 32.4 t ADT: 50
TR 240
FairOver: BROUILLETTS CREEK
4.5 MI NW N ARM, Edgar, IL
Built 1984 Load: 32.4 t ADT: 75
TR 75
FairOver: CRABAPPLE CREEK BR
2 MI SE OF CHRISMAN, Edgar, IL
Built 1991 Load: 32.4 t ADT: 50
TR 95
FairOver: S BRANCH BROUILLETTS
.5 MI W OF EDGAR, Edgar, IL
Built 1995 Load: 32.4 t ADT: 25
TR 383
FairOver: S BRANCH CLEAR CREEK
3 MI E OF OLIVER, Edgar, IL
Built 1990 Load: 32.4 t ADT: 50
TR 355
FairOver: STREAM
1.5 MI SW ELBRIDGE, Edgar, IL
Built 1985 Load: 32.4 t ADT: 50
TR 220
FairOver: CLEAR CR TRIB
2.3 MI E OF OLIVER, Edgar, IL
Built 2001 Load: 32.4 t ADT: 50
TR 317
FairOver: INDIAN CREEK
3.5 MI SE VERMILION, Edgar, IL
Built 2011 Load: 32.4 t ADT: 50
TR 275 / 600th Roa
FairOver: Sugar Creek
2 MI SW VERMILION, Edgar, IL
Built 2015 Load: 32.4 t ADT: 50
TR 227
FairOver: HICKORY GROVE CREEK
3.0 MI E WARRINGTON, Edgar, IL
Built 1982 Load: 32.4 t ADT: 75
TR 18
FairOver: CATFISH CREEK
4 MI SW OF BROCTON, Edgar, IL
Built 1984 Load: 32.4 t ADT: 50
TR 74
FairOver: CATFISH CREEK
1.5 MI NW OF REDMON, Edgar, IL
Built 1985 Load: 32.4 t ADT: 25
TR 137A
FairOver: TRIB CATFISH CR
2 MI SE BROCTON, Edgar, IL
Built 2005 Load: 32.4 t ADT: 50
TR 42
FairOver: TRIB LITTLE EMBARRAS
1 MI SE OF BROCTON, Edgar, IL
Built 1998 Load: 32.4 t ADT: 50
TR 61
FairOver: BRUSHY FORK
3 MI S OF GRANDVIEW, Edgar, IL
Built 1978 Load: 32.4 t ADT: 50
TR 108
FairOver: W FORK BIG CREEK
3 MI SE OF GRANDVIEW, Edgar, IL
Built 1985 Load: 32.4 t ADT: 50
TR 169 A
FairOver: BROUILLETTS CREEK
1.5 MILE NE CLAYS DR, Edgar, IL
Built 1986 Load: 32.4 t ADT: 50
TR 68
FairOver: STREAM
4 MI E OF KANSAS, Edgar, IL
Built 1980 Load: 32.4 t ADT: 50
TR 233
FairOver: EAST DONICA CREEK
3.5 MI N OF KANSAS, Edgar, IL
Built 1991 Load: 32.4 t ADT: 25
TR 175 A
FairOver: DRAINAGE DITCH
5 MI N OF PARIS, Edgar, IL
Built 1993 Load: 32.4 t ADT: 50
TR 49
FairOver: CRABAPPLE CREEK
1.0 MI E CHRISMAN, Edgar, IL
Built 1981 Load: 32.4 t ADT: 50
TR 149
FairOver: SHILOH SPEC DRAINAGE
3 MI N OF REDMON, Edgar, IL
Built 1989 Load: 32.4 t ADT: 50
TR 116
FairOver: DRAINAGE DITCH
0.1 MI S OF METCALF, Edgar, IL
Built 1990 Load: 32.4 t ADT: 50
TR 105
FairOver: SHILOH DRAIN DITCH 3
3 MI S OF METCALF, Edgar, IL
Built 1999 Load: 32.4 t ADT: 50
TR 101 A
FairOver: BRUSHY FORK
3.5 MI SSE HUME, Edgar, IL
Built 2003 Load: 32.4 t ADT: 25
TR 298 B
FairOver: COAL CREEK
3.0 MI NE VERMILION, Edgar, IL
Built 1977 Load: 32.4 t ADT: 50
TR 231
FairOver: STREAM
3.5 MI NE VERMILION, Edgar, IL
Built 1987 Load: 32.4 t ADT: 50
TR 223
FairOver: SUGAR CREEK BRANCH
1 MI E OF PARIS, Edgar, IL
Built 1990 Load: 32.4 t ADT: 50
TR 326
FairOver: STREAM
4 MI NE OF VERMILION, Edgar, IL
Built 1996 Load: 32.4 t ADT: 50
TR 237
FairOver: SUGAR CREEK
2.9 MI W VERMILION, Edgar, IL
Built 2005 Load: 32.4 t ADT: 350
TR 227 A
FairOver: TRIB TO SUGAR CREEK
.5 MI E OF PARIS, Edgar, IL
Built 1998 Load: 32.4 t ADT: 50
TR 326
FairOver: COAL CREEK
3 MI NE VERMILION, Edgar, IL
Built 2013 Load: 32.4 t ADT: 50
TR 327
FairOver: MIDDLE FK BIG CREEK
.25 MI E OF BELLRDGE, Edgar, IL
Built 1987 Load: 32.4 t ADT: 75
TR 327 A
FairOver: BIG CREEK
3.5 MI E BELL RIDGE, Edgar, IL
Built 1993 Load: 32.4 t ADT: 150
TR 327 A
FairOver: TRIBFLEMINGTON CREEK
1 MI E OF BELLRIDGE, Edgar, IL
Built 2003 Load: 32.4 t ADT: 75
TR 283
FairOver: TRIB CLEAR CREEK
3.2 MI SE PARIS, Edgar, IL
Built 2009 Load: 32.4 t ADT: 50
TR 27
FairOver: BROUILLETTS CREEK
3 MI N OF METCALF, Edgar, IL
Built 1982 Load: 32.4 t ADT: 50
TR 27
FairOver: BRUSHY FORK
3.0 MI N OF HUME, Edgar, IL
Built 1980 Load: 32.4 t ADT: 50
TR 52
FairOver: BRUSHY FORK
1.5 MI NW OF HUME, Edgar, IL
Built 1984 Load: 32.4 t ADT: 50
TR 52
FairOver: DRAINAGE DITCH
1 MI E OF MCCOWN, Edgar, IL
Built 1987 Load: 32.4 t ADT: 50
TR 27
FairOver: CLARK BRANCH
3 MI NE OF HUME, Edgar, IL
Built 1992 Load: 32.4 t ADT: 50
FAS-813
FairOver: CROOKED CREEK
0.75 MI NE WEST SALM, Edwards, IL
Built 1986 Load: 32.4 t ADT: 50
FAI-57 SB
FairOver: GREEN CREEK
1.5 MI S SHELBY C L, Effingham, IL
Built 1964 Load: 32.4 t ADT: 9,450
FAI-70 EB
FairOver: B & O RR(ABANDONED)
.2 MI W ALTAMONT INT, Effingham, IL
Built 1962 Load: 32.4 t ADT: 11,950
FAI-70 WB
FairOver: B & O RR(ABANDONED)
.2 MI W ALTAMONT INT, Effingham, IL
Built 1962 Load: 32.4 t ADT: 11,950
FAS 2701 (ILL-37)
FairOver: LITTLE WABASH RIVER
3 MI N MASON, Effingham, IL
Built 1981 Load: 32.4 t ADT: 2,100
FAI-70 WB
FairOver: SECOND CREEK
2.5 MI E ALTAMNT INT, Effingham, IL
Built 1961 Load: 32.4 t ADT: 11,850
FAI-70 EB
FairOver: SECOND CREEK
2.5 MI E ALTAMNT INT, Effingham, IL
Built 1961 Load: 32.4 t ADT: 11,850
FAI-70 EB
FairOver: LILY CREEK
3 MI W SW TRI-LEVEL, Effingham, IL
Built 1961 Load: 32.4 t ADT: 11,850
Showing 7,901-7,950 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.