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
FORREST HILL AVE
UnknownOver: I-74
3/8 MI N GALE INTER, Peoria, IL
Built 2003 ADT: 40,700
NEBRASKA AVE
UnknownOver: I-74
.5 MI W UNIVERSITY, Peoria, IL
Built 2006 ADT: 43,800
I-474 EB
UnknownOver: IL 116
0.27 MI N CLOSEN RD, Peoria, IL
Built 2023 ADT: 3,850
I-474 WB
UnknownOver: IL 116
0.27 M N CLOSEN RD, Peoria, IL
Built 2023 ADT: 3,850
MACARTHUR HWY
UnknownOver: R B GARRETT AVE
NE1/4Sec8 T18N R8E, Peoria, IL
Built 2018 ADT: 2,100
ATSF(004554S)
UnknownOver: ILL 29
IL 29 N CHILLI, Peoria, IL
Built 1900 ADT: 6,400
ATSF(004553K)
UnknownOver: ILL 29-FAP 318
SW-16-T11NR9E, Peoria, IL
Built 1900 ADT: 6,400
ATSF(004594P)
UnknownOver: FAP 661 (ILL 90 &91)
5 MI N DUNLAP, Peoria, IL
Built 1900 ADT: 2,750
BNSF(004617U)
UnknownOver: FAP 22 (ILL 78)
IL 78 AT LAURA, Peoria, IL
Built 1900 ADT: 2,600
P&PU RR (604054B)
UnknownOver: US 150
PEORIA JOURNAL BLDG., Peoria, IL
Built 1950 ADT: 25,800
C&NW RR (175564T)
UnknownOver: KICKAPOO CREEK ROAD
SEC 25 LIMESTONE TWP, Peoria, IL
Built 1912 ADT: 1,900
AT&SF RR (004584J)
UnknownOver: N. HAMPTON RD
NW-24-T11NR8E, Peoria, IL
Built 1906 ADT: 75
BN RR (094070Y)
UnknownOver: CEMETERY ROAD
SW-5-T9NR6E, Peoria, IL
Built 1900 ADT: 200
AT&SF RR (004601X)
UnknownOver: SLANE R.D.
NE-19-T11NR7E, Peoria, IL
Built 1905 ADT: 50
AT&SF RR (004599Y)
UnknownOver: FEUCHT ROAD
W LN NWQTR 21T11NR7E, Peoria, IL
Built 1905 ADT: 50
C&NW RR (175543A)
UnknownOver: TR 317
SEC 23 T7N,R7E, Peoria, IL
Built 1926 ADT: 25
UP 748462K
UnknownOver: CHARTER OAK ROAD
MP 73.9, Peoria, IL
Built 2006 ADT: 9,000
AT&SF RR (004603L)
UnknownOver: PRINCEVILLE-JUBILEE
NE-24-T11NR6E, Peoria, IL
Built 2005 ADT: 1,600
US 51-FAP322
UnknownOver: CHSTNT-CNIC-OAK-ALLEY
NEAR DOWNTWN DUQUOIN, Perry, IL
Built 1997 ADT: 250
MO PAC RR
UnknownOver: TR 108
2.5M SW PINCKNYVILLE, Perry, IL
Built 1900 ADT: 10
ICG RR
UnknownOver: TR 128 B
SW OF PINCKNEYVILLE, Perry, IL
Built 1900 ADT: 200
ICG RR
UnknownOver: TR 318
2.0M SE OF DUBOIS, Perry, IL
Built 1900 ADT: 25
ICG RR
UnknownOver: ILL 13-154
PINCKNEYVILLE, Perry, IL
Built 1938 ADT: 6,650
IL 10 (FAP 721)
UnknownOver: I-72
NE OF WHITE HEATH, Piatt, IL
Built 1969 ADT: 14,500
N&S RR
UnknownOver: FAP 756
W EDGE OF MONTICELLO, Piatt, IL
Built 1900 ADT: 5,500
SBI 10 (FAS 1532)
UnknownOver: I-72
W OF WHITE HEATH, Piatt, IL
Built 1962 ADT: 225
TR 87
UnknownOver: I-72
4 MI NE MONTICELLO, Piatt, IL
Built 1962 ADT: 13,900
FAS 1532 (TR 154)
UnknownOver: I-72
E OF WHITE HEATH, Piatt, IL
Built 1962 ADT: 13,400
TR 80
UnknownOver: I-74
3 MI E OF US 54, Piatt, IL
Built 1970 ADT: 21,500
TR 96
UnknownOver: I-74
2 MI W MANSFIELD, Piatt, IL
Built 1970 ADT: 21,500
FAS 495
UnknownOver: I-74
N OF MANSFIELD, Piatt, IL
Built 1969 ADT: 22,800
ILL 48(FAP 760)
UnknownOver: I-72
1 MI W OF CISCO, Piatt, IL
Built 1975 ADT: 11,400
CH 17
UnknownOver: I-72
AT CISCO, Piatt, IL
Built 1975 ADT: 11,400
TR 16
UnknownOver: I-72
2 MI E OF CISCO, Piatt, IL
Built 1975 ADT: 11,400
TR 40 A
UnknownOver: I-72
2 MI W MONTICELLO, Piatt, IL
Built 1975 ADT: 11,400
FAU 7531
UnknownOver: I-72
.5 MI NW MONTICELLO, Piatt, IL
Built 1975 ADT: 10,900
TR 54
UnknownOver: I-72
.5 MI NW MONTICELLO, Piatt, IL
Built 1975 ADT: 10,900
ILL 105(FAP 741)
UnknownOver: I-72
N OF MONTICELLO, Piatt, IL
Built 1975 ADT: 13,900
N&S RR
UnknownOver: CH 4(BRIDGE ST)
W EDGE OF MONTICELLO, Piatt, IL
Built 1900 ADT: 350
N&S RR
UnknownOver: CH 6(MARION)
0.1 MI W OF FAS 540, Piatt, IL
Built 1900 ADT: 1,450
IL 104
UnknownOver: Illinois River
Meredosia, Pike, IL
Built 2018 ADT: 175
ICG RR
UnknownOver: ILL 100
.30 MI W PEARL ILL., Pike, IL
Built 1935 ADT: 300
TR 20 (600E)
UnknownOver: I-72
1.97M E I-172, Pike, IL
Built 1986 ADT: 9,400
TR 36 (850E)
UnknownOver: I-72 / US 36
1.0M W IL96/HULL INT, Pike, IL
Built 1987 ADT: 9,400
IL 96
UnknownOver: I-72
I-72/IL96 INT (HULL), Pike, IL
Built 1987 ADT: 9,400
TR 52
UnknownOver: I-72
2.1M E HULL INTCHG, Pike, IL
Built 1988 ADT: 9,400
I-72 EB
UnknownOver: TR 62
3.3M E HULL INTCHG, Pike, IL
Built 1987 ADT: 25
I-72 WB
UnknownOver: TR 62
3.3M E HULL INTCHG, Pike, IL
Built 1987 ADT: 25
I-72 EB
UnknownOver: TR 70A
3.7M W BARRY INTCHG, Pike, IL
Built 1989 ADT: 25
I-72 WB
UnknownOver: TR 70A
3.7M W BARRY INTCHG, Pike, IL
Built 1989 ADT: 25
Showing 3,101-3,150 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |