Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near median Poor share
Illinois bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
Data updated May 2026
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges whose lowest applicable component is rated 0-4
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 - Poor-condition share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Illinois on the same metric.
RI
Rhode Island
7.69% top marginal rate
NE
Nebraska
7.73% top marginal rate
IL
Illinois
7.88% top marginal rate
MA
Massachusetts
7.96% top marginal rate
MO
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
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
PoorOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
PoorOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
PoorOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
PoorOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
IL3NB->255WB Rmp E
UnknownOver: 255SB->IL3SB Ramp B
NORTH OF COLUMBIA, Monroe, IL
Built 1982 ADT: 35,500
ILL 3 NB
UnknownOver: Palmer Rd/Palmer Crk
0.8 mi S of I-255, Monroe, IL
Built 1984 ADT: 6,950
IL 3 SB
UnknownOver: Palmer Rd/Palmer Crk
0.8 mi S of I-255, Monroe, IL
Built 1991 ADT: 4,800
IL 158
UnknownOver: IL 3
1 MI S COLUMBIA, Monroe, IL
Built 2012 ADT: 22,800
TR 7
UnknownOver: I-55
1.59M S CO. LINE, Montgomery, IL
Built 1970 ADT: 275
TR 17
UnknownOver: I-55
3.05M S SANGAMON CO., Montgomery, IL
Built 1970 ADT: 275
CH 17
UnknownOver: I-55
FARMERSVILLE INTERCH, Montgomery, IL
Built 1973 ADT: 31,000
TR 37
UnknownOver: I-55
1.5M S FRMERSVLE INT, Montgomery, IL
Built 1971 ADT: 550
CH 16
UnknownOver: I-55&W F R(FAS 1769)
E EDGE WAGGONER, Montgomery, IL
Built 1972 ADT: 550
IL 48/127
UnknownOver: I-55
I-55 / IL127/48 INT., Montgomery, IL
Built 1972 ADT: 28,800
IL 108
UnknownOver: I-55
IL 108/I-55 INTERCH., Montgomery, IL
Built 1973 ADT: 26,800
CH 24
UnknownOver: I-55
3M SO IL 108, Montgomery, IL
Built 1972 ADT: 26,500
TR 48
UnknownOver: I-55
2.4M N IL 16 INT., Montgomery, IL
Built 1973 ADT: 26,500
TR 235
UnknownOver: I-55
1.2M N IL 16 INT., Montgomery, IL
Built 1972 ADT: 26,500
IL 16
UnknownOver: I-55
LITCHFIELD INTERCHNG, Montgomery, IL
Built 1973 ADT: 26,500
TR 277
UnknownOver: I-55
1.7M S IL 16 INT., Montgomery, IL
Built 1973 ADT: 28,900
TR 1
UnknownOver: I-55
SANG/MONT CO LINE, Montgomery, IL
Built 1971 ADT: 400
UNION PACIFIC RR
UnknownOver: IL 16
SCHRAM CITY WCL, Montgomery, IL
Built 1923 ADT: 2,900
NORFOLK SOUTHERN R
UnknownOver: IL 127 (WEST ST)
.18M S IL48, RAYMOND, Montgomery, IL
Built 1934 ADT: 2,650
N&W RR
UnknownOver: TR 163A
.50MI SE HONEY BEND, Montgomery, IL
Built 1912 ADT: 25
RR
UnknownOver: TR 353
1.3 M E COFFEEN, Montgomery, IL
Built 1900 ADT: 25
GATEWAY WESTERN RR
UnknownOver: BUS I72/IL104/MORTON
.5M E IL 267-JACKSNV, Morgan, IL
Built 1958 ADT: 10,400
NORFOLK SOUTHERN R
UnknownOver: OLD US 36
1M E I-72/US 36, Morgan, IL
Built 1948 ADT: 1,100
GATEWAY WESTERN RR
UnknownOver: ILL 104
REES STATION, Morgan, IL
Built 1908 ADT: 1,750
IL 267
UnknownOver: TR 967/KCS RR
.3M S JCT US 67, Morgan, IL
Built 1946 ADT: 175
IL 267/US 67/BL 67
UnknownOver: I-72/US 36
2.5M S IL104-JACKSVL, Morgan, IL
Built 1975 ADT: 9,950
TR 195
UnknownOver: FAI 72
1.8MI SW I72/OLD36, Morgan, IL
Built 1975 ADT: 9,950
FAI 72 EB
UnknownOver: ILL 104 & B&N RR
1.1MI SW I72/OLD36, Morgan, IL
Built 1975 ADT: 2,000
FAI 72 WB
UnknownOver: ILL 104 & B&N RR
1.1MI SW I72/OLD36, Morgan, IL
Built 1975 ADT: 2,000
BUS I72/OLD US 36
UnknownOver: FAI 72
I72/BUS I72 INT #68, Morgan, IL
Built 1975 ADT: 14,500
NSRR
UnknownOver: FAI 72
.4M NE I72/BUS I72, Morgan, IL
Built 1975 ADT: 14,500
TR 232
UnknownOver: FAI 72
1MI E I72/BUS I72, Morgan, IL
Built 1975 ADT: 14,500
TR 284
UnknownOver: FAI 72
2.5MI E I72/BUS I72, Morgan, IL
Built 1975 ADT: 14,500
TR 318
UnknownOver: FAI 72
2MI.NW. OF ALEXANDER, Morgan, IL
Built 1975 ADT: 14,500
FAS 614
UnknownOver: FAI 72
I-72 INT @ ALEXANDER, Morgan, IL
Built 1975 ADT: 14,500
TR 50
UnknownOver: FAI 72
1.4 MI E SCOTT CO, Morgan, IL
Built 1976 ADT: 8,800
CH 23
UnknownOver: FAI 72
2.2 MI E SCOTT CO, Morgan, IL
Built 1976 ADT: 8,800
FAI 72 WB
UnknownOver: US 67
2.75 MI W ILL 267, Morgan, IL
Built 1977 ADT: 5,200
FAI 72 EB
UnknownOver: US 67
2.75 MI W ILL 267, Morgan, IL
Built 1977 ADT: 5,200
FAI 72/US 36/US67
UnknownOver: MASSEY LANE TR 128
2.25 MI W IL 267, Morgan, IL
Built 1977 ADT: 700
FAI 72/US 36/US67
UnknownOver: MASSEY LANE TR 128
2.25 MI W IL 267, Morgan, IL
Built 1977 ADT: 700
TR 96
UnknownOver: US 67/IL 104
5.2MN US67/I72/US36, Morgan, IL
Built 1998 ADT: 5,450
US 67 SB
UnknownOver: IL104EB & 104WB RAMP
4.7M N US67/I72/US36, Morgan, IL
Built 1998 ADT: 1,400
US 67 NB
UnknownOver: IL104EB & 104WB RAMP
4.7M N US67/I72/US36, Morgan, IL
Built 1998 ADT: 225
TR 157
UnknownOver: US 67
3.9M N US67/I72/US36, Morgan, IL
Built 1998 ADT: 5,450
BUS I 72/MORTON AV
UnknownOver: US 67
2.6M N US67/I72/US36, Morgan, IL
Built 1998 ADT: 5,200
TR 187
UnknownOver: US 67
1.4M N US67/I72/US36, Morgan, IL
Built 1998 ADT: 5,200
FAS 579/CH 7
UnknownOver: US 67/IL 104
1.2 mi E of Chapin, Morgan, IL
Built 2012 ADT: 6,450
MOUND ROAD
UnknownOver: IL 104
.3M N MORTON-JACKSVL, Morgan, IL
Built 2011 ADT: 2,450
FAP 745(IL 104)
UnknownOver: Washington St
Meredosia, Morgan, IL
Built 2018 ADT: 325
Showing 2,951-3,000 of 27,743 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.