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 221
FairOver: CREEK
1.2 MI NE PIERCEBURG, Crawford, IL
Built 2000 Load: 32.4 t ADT: 50
TR 76
FairOver: LITTLE CREEK
2.5 MI NE PIERCEBURG, Crawford, IL
Built 2015 Load: 32.4 t ADT: 50
TR-260
FairOver: BRANCH BRUSHY CREEK
3 MI S FLAT ROCK, Crawford, IL
Built 1979 Load: 32.4 t ADT: 20
TR-314
FairOver: SUGAR CREEK
O.5 MI NE HEATHSVILL, Crawford, IL
Built 1978 Load: 32.4 t ADT: 50
TR-365
FairOver: BRUSHY CREEK
2 MI S FLAT ROCK, Crawford, IL
Built 1982 Load: 32.4 t ADT: 50
TR-351
FairOver: CREEK
2 MI SW HEATHSVILLE, Crawford, IL
Built 1995 Load: 32.4 t ADT: 20
TR-304
FairOver: CREEK
1.7 MI SW HEATHSVILL, Crawford, IL
Built 1995 Load: 32.4 t ADT: 20
TR-312
FairOver: CREEK
1.2 MI S HEATHSVILLE, Crawford, IL
Built 1994 Load: 32.4 t ADT: 20
TR 217
FairOver: NO BUSINESS CREEK
4 MI N HEATHSVILLE, Crawford, IL
Built 1996 Load: 32.4 t ADT: 20
TR-351
FairOver: CREEK
SW HEATHSVILLE, Crawford, IL
Built 1995 Load: 32.4 t ADT: 20
TR325
FairOver: POERON CREEK
1 MI N HEATHSVILLE, Crawford, IL
Built 1996 Load: 32.4 t ADT: 20
TR 285
FairOver: BRUSHY CREEK
0.3 MI N FLAT ROCK, Crawford, IL
Built 1996 Load: 32.4 t ADT: 20
TR 341
FairOver: SUGAR CREEK
0.5 MI E HEATHSVILLE, Crawford, IL
Built 2000 Load: 32.4 t ADT: 20
TR 314
FairOver: NO BUSINESS CR
1 MI S RICHWOODS, Crawford, IL
Built 2000 Load: 32.4 t ADT: 50
TR 312
FairOver: CREEK
1 MI N HEATHSVILLE, Crawford, IL
Built 2004 Load: 32.4 t ADT: 20
TR 284
FairOver: TRIB BRUSHY CREEK
1.5 MI E FLATROCK, Crawford, IL
Built 2006 Load: 32.4 t ADT: 20
TR 293
FairOver: CREEK
1.5 MI N HEATHSVILLE, Crawford, IL
Built 2015 Load: 32.4 t ADT: 150
TR-185
FairOver: BENNET CREEK
1 MI SW STOY, Crawford, IL
Built 1979 Load: 32.4 t ADT: 375
TR-147
FairOver: BIG CREEK
1.5 MI N STOY, Crawford, IL
Built 1985 Load: 32.4 t ADT: 100
TR-185
FairOver: BRUSH CREEK
2 MI SE OBLONG, Crawford, IL
Built 1989 Load: 32.4 t ADT: 400
TR-110
FairOver: GRASSY CREEK
2.5 MI N STOY, Crawford, IL
Built 1994 Load: 32.4 t ADT: 100
TR 155
FairOver: DOGWOOD CREEK
1 MI N OBLONG, Crawford, IL
Built 2000 Load: 32.4 t ADT: 150
TR 107
FairOver: BIG CREEK
3.7 MI N STOY, Crawford, IL
Built 2001 Load: 32.4 t ADT: 20
TR 131
FairOver: WILLOW CREEK
2 MI NW OBLONG, Crawford, IL
Built 2004 Load: 32.4 t ADT: 50
TR 78
FairOver: BIG CREEK
3 MI SE OBLONG, Crawford, IL
Built 2006 Load: 32.4 t ADT: 50
TR 203
FairOver: FREEPORT CREEK
2.5 MI S OBLONG, Crawford, IL
Built 2005 Load: 32.4 t ADT: 100
TR 199
FairOver: LITTLE CREEK
1.5 MI S STOY, Crawford, IL
Built 2007 Load: 32.4 t ADT: 175
TR-21
FairOver: MUDDY CREEK
1.1 MI NW ANNAPOLIS, Crawford, IL
Built 1978 Load: 32.4 t ADT: 50
TR-190
FairOver: S FK RACCOON CREEK
3.6 MI E ANNAPOLIS, Crawford, IL
Built 1981 Load: 32.4 t ADT: 100
TR-85
FairOver: BIG CREEK
1.7 MI S EATON, Crawford, IL
Built 1998 Load: 32.4 t ADT: 75
TR-85
FairOver: STREAM
3.5 MI NW ROBINSON, Crawford, IL
Built 1994 Load: 32.4 t ADT: 50
TR 140
FairOver: BIG CREEK
2 MI N EATON, Crawford, IL
Built 1999 Load: 32.4 t ADT: 125
TR 45
FairOver: ELM CREEK
2 MI N EATON, Crawford, IL
Built 2001 Load: 32.4 t ADT: 20
TR 45
FairOver: CREEK
2 MI N EATON, Crawford, IL
Built 2009 Load: 32.4 t ADT: 20
TR-210
FairOver: SUGAR CREEK
2 MI W TRIMBLE, Crawford, IL
Built 1980 Load: 32.4 t ADT: 20
TR-210
FairOver: CREEK
2 MI SW TRIMBLE, Crawford, IL
Built 1980 Load: 32.4 t ADT: 20
TR-179
FairOver: LITTLE CREEK
1.5 MI W ROBINSON, Crawford, IL
Built 1983 Load: 32.4 t ADT: 150
TR-207
FairOver: HONEY CREEK
2 MI S ROBINSON, Crawford, IL
Built 1983 Load: 32.4 t ADT: 100
TR-149
FairOver: BENNETT CREEK
2 MI NW ROBINSON, Crawford, IL
Built 1986 Load: 32.4 t ADT: 550
TR-101
FairOver: SUGAR CREEK
0.5 MI W TRIMBLE, Crawford, IL
Built 1986 Load: 32.4 t ADT: 225
TR-130
FairOver: BENNET CREEK
1 MI E STOY, Crawford, IL
Built 1992 Load: 32.4 t ADT: 50
TR 120
FairOver: CREEK
2 MI S EATON, Crawford, IL
Built 2001 Load: 32.4 t ADT: 20
TR 202
FairOver: SUGAR CREEK
2.5 MI W TRIMBLE, Crawford, IL
Built 2006 Load: 32.4 t ADT: 400
CH 18(FAS 674)
FairOver: LAKE MATTOON
2.5 MI N NEOGA, Cumberland, IL
Built 1958 Load: 32.4 t ADT: 1,100
TR 33 B
FairOver: HURRICANE CREEK
2.5 MI NW UNION CT, Cumberland, IL
Built 1977 Load: 32.4 t ADT: 125
TR 59
FairOver: MUDDY CREEK
3.5 MI NW TOLEDO, Cumberland, IL
Built 1977 Load: 32.4 t ADT: 150
TR 181
FairOver: SPRING POINT CREEK
2.0 MI SW ROSYLN, Cumberland, IL
Built 1979 Load: 32.4 t ADT: 100
TR 52
FairOver: LONG POINT CREEK
6 MI W TOLEDO, Cumberland, IL
Built 1978 Load: 32.4 t ADT: 100
TR 268
FairOver: BIRCH CREEK
1 MI SE VEVAY PARK, Cumberland, IL
Built 1978 Load: 32.4 t ADT: 75
TR 183
FairOver: CROOKED CREEK
1 MI NW OF JEWETT, Cumberland, IL
Built 1979 Load: 32.4 t ADT: 50
Showing 7,751-7,800 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.