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 12
FairOver: MCKEE CREEK
1.5 MI N COLUMBUS, Adams, IL
Built 1978 Load: 32.4 t ADT: 725
CH 5
FairOver: BURTON CREEK
IN BURTON, Adams, IL
Built 1978 Load: 32.4 t ADT: 650
CH 12
FairOver: BEAR CREEK
3.5 MI N COATSBURG, Adams, IL
Built 1981 Load: 32.4 t ADT: 350
FAS 432
FairOver: FISH HOOK CREEK
2.5 MI NE KINGSTON, Adams, IL
Built 1981 Load: 32.4 t ADT: 125
CH 11
FairOver: FIGLEY BR
3.5 MI S. CAMP POINT, Adams, IL
Built 1982 Load: 32.4 t ADT: 750
CH 1
FairOver: HIGGIN'S CREEK
1.0 MI. SE OF LIMA, Adams, IL
Built 1983 Load: 32.4 t ADT: 200
CH 14 - FAS 432
FairOver: S FK CEDAR / CREEK
4ME GOLDEN, Adams, IL
Built 1985 Load: 32.4 t ADT: 275
FAS 583/CH 18
FairOver: CEDAR CREEK
1.3MI. E LA PRAIRIE, Adams, IL
Built 1987 Load: 32.4 t ADT: 500
CH 10
FairOver: MC CRANEY CREEK
3.4MI E PLAINVILLE, Adams, IL
Built 1990 Load: 32.4 t ADT: 200
CH 14
FairOver: FISH HOOK CREEK
1.5 MI SW SILOAM SPR, Adams, IL
Built 1992 Load: 32.4 t ADT: 150
CH 1
FairOver: BEAR CREEK
3.6 MI W LORAINE, Adams, IL
Built 2000 Load: 32.4 t ADT: 100
CH-6
FairOver: DRAINAGE DITCH
3.2 MI W URSA, Adams, IL
Built 1994 Load: 32.4 t ADT: 100
CH 6
FairOver: DRAINAGE DITCH
2.5 MI W URSA, Adams, IL
Built 1994 Load: 32.4 t ADT: 100
FAS 592/CH22
FairOver: MCCRANEY CREEK
7 MI E. PAYSON, Adams, IL
Built 1995 Load: 32.4 t ADT: 250
CH 10
FairOver: BEEBE CREEK
3.2 MI W BEVERLY, Adams, IL
Built 1995 Load: 32.4 t ADT: 150
TR 375
FairOver: MILL CREEK
3.3 MI E QUINCY, Adams, IL
Built 1985 Load: 32.4 t ADT: 500
TR 76
FairOver: MILL CRK
2.5 MI SO QUINCY, Adams, IL
Built 1986 Load: 32.4 t ADT: 225
TR 205
FairOver: SAND BRANCH
3.4 SO MENDON, Adams, IL
Built 1986 Load: 32.4 t ADT: 25
TR 443
FairOver: COAL CREEK
4.7 MI E LIBERTY, Adams, IL
Built 1985 Load: 32.4 t ADT: 50
TR 214
FairOver: MILL CREEK
3.6 MI NE QUINCY, Adams, IL
Built 1986 Load: 32.4 t ADT: 50
TR 450
FairOver: GRINDSTONE CREEK
1.0 MI NE KINGSTON, Adams, IL
Built 1986 Load: 32.4 t ADT: 50
TR 242
FairOver: TOURMEAL CREEK
1.25 MI E BURTON, Adams, IL
Built 1986 Load: 32.4 t ADT: 100
TR 577
FairOver: MCCRANEY CREEK
4.5 E PLAINVILLE, Adams, IL
Built 1986 Load: 32.4 t ADT: 25
TR 246
FairOver: THURMAN CREEK
1 MI S LORAINE, Adams, IL
Built 1988 Load: 32.4 t ADT: 100
TR 601
FairOver: PIGEON CREEK
4.4 MI E FALL CREEK, Adams, IL
Built 1987 Load: 32.4 t ADT: 25
TR 175
FairOver: URSA CREEK
1.4M SW URSA, Adams, IL
Built 1988 Load: 32.4 t ADT: 50
TR 488
FairOver: WALNUT FORK
1.9 MI NW KELLERVILL, Adams, IL
Built 1988 Load: 32.4 t ADT: 100
TR 40
FairOver: BUEL BRANCH
1.0 MI W LIMA, Adams, IL
Built 1987 Load: 32.4 t ADT: 100
TR 471A
FairOver: TOUR MEAL CREEK
2.8 MI W LIBERTY, Adams, IL
Built 1989 Load: 32.4 t ADT: 75
TR 162
FairOver: FALL CREEK
1.2 MI E FALL CREEK, Adams, IL
Built 1989 Load: 32.4 t ADT: 75
TR 309
FairOver: MCKEE CREEK
3.1MI SE COLUMBUS, Adams, IL
Built 1990 Load: 32.4 t ADT: 125
TR 488
FairOver: WALNUT FORK
2.7MI NW KELLERVILLE, Adams, IL
Built 1990 Load: 32.4 t ADT: 100
TR 496
FairOver: BR CEDAR CREEK
1 MI E LA PRARIE, Adams, IL
Built 1991 Load: 32.4 t ADT: 50
TR 103A
FairOver: JENKINS CREEK
2.0 MI W MARCELLINE, Adams, IL
Built 1991 Load: 32.4 t ADT: 75
TR 89
FairOver: BALDWIN BRANCH
2.2MI NE MENDON, Adams, IL
Built 1993 Load: 32.4 t ADT: 125
TR 184
FairOver: MILL CREEK
2.0 MI S FOWLER, Adams, IL
Built 1991 Load: 32.4 t ADT: 100
TR 130
FairOver: MILL CREEK
1.6 MI SE QUINCY, Adams, IL
Built 1992 Load: 32.4 t ADT: 200
TR 175
FairOver: INDIAN GRAVE DITCH
3.5MI SW URSA, Adams, IL
Built 1994 Load: 32.4 t ADT: 50
TR 87
FairOver: SOUTH FORK CREEK
4 MI E GOLDEN, Adams, IL
Built 1997 Load: 32.4 t ADT: 25
TR 315
FairOver: CURL CREEK
4.25MI SW CLAYTON, Adams, IL
Built 1997 Load: 32.4 t ADT: 50
RIDGEWOOD DR
FairOver: CURTIS CREEK
CITY OF QUINCY, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
N 18TH ST
FairOver: CEDAR CREEK
N 18TH ST, Adams, IL
Built 2002 Load: 32.4 t ADT: 3,150
QUINSIPPI ISLAND R
FairOver: QUINCY BAY
SE SEC34 T15 R9W, Adams, IL
Built 2013 Load: 32.4 t ADT: 200
FAP 312-IL 146
FairOver: MISSISSIPPI RIVER
EAST CAPE GIRARDEAU, Alexander, IL
Built 2003 Load: 32.4 t ADT: 9,350
TR 73
FairOver: WOLF CREEK
3.5 MI N OF OLIVE BR, Alexander, IL
Built 1988 Load: 32.4 t ADT: 10
TR 41A
FairOver: TRIB SEXTON CREEK
6 MI E OF MCCLURE, Alexander, IL
Built 1977 Load: 32.4 t ADT: 10
FAI 70 EB
FairOver: E FORK SHOAL CREEK
2.7 MI E POCAHONTAS, Bond, IL
Built 1967 Load: 32.4 t ADT: 13,100
FAI 70 WB
FairOver: E FORK SHOAL CREEK
2.7 MI E POCAHONTAS, Bond, IL
Built 1967 Load: 32.4 t ADT: 13,100
IL 140
FairOver: Trib to Shoal Creek
1.75mi E Old Ripley, Bond, IL
Built 1931 Load: 32.4 t ADT: 2,050
IL 140
FairOver: LITTLE SILVER CR BR
3.1mi E of IL 160, Bond, IL
Built 2007 Load: 32.4 t ADT: 1,600
Showing 7,151-7,200 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.