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 206
GoodOver: NORTH HENDERSON CR
SW-21-T13NR2W, Mercer, IL
Built 1996 Load: 34.7 t ADT: 50
LEVEE RD TR 28
GoodOver: CARR CREEK
ROAD DIST NO.5, Monroe, IL
Built 1983 Load: 34.7 t ADT: 125
IL 17
GoodOver: MUD RUN CREEK
1.7 MI E OF IL 40, Peoria, IL
Built 1995 Load: 34.7 t ADT: 650
FAS 386 (TAYLOR RD
GoodOver: KICKAPOO CR OVERFLOW
SW 1/4 19 KICKAPOO, Peoria, IL
Built 1977 Load: 34.7 t ADT: 3,000
I-74 (EB)
GoodOver: NS Railway & Madden Cree
.5 MI W MANSFIELD, Piatt, IL
Built 1970 Load: 34.7 t ADT: 10,750
IL 48(FAP 760)
GoodOver: STREAM
4 MI N OF I-72, Piatt, IL
Built 1987 Load: 34.7 t ADT: 1,250
ILL 34
GoodOver: STREAM
2 MI SE FRANKLIN CO, Saline, IL
Built 2004 Load: 34.7 t ADT: 2,100
CH 23
GoodOver: LITTLE SALINE RIVER
4.8 MI E OF US 45, Saline, IL
Built 1965 Load: 34.7 t ADT: 125
TR 74
GoodOver: WOLF RUN CREEK
1 MI. E BLUFFS, Scott, IL
Built 1981 Load: 34.7 t ADT: 75
FAP 766(IL 32)
GoodOver: STREAM
0.5 MI N. STRASBURG, Shelby, IL
Built 1991 Load: 34.7 t ADT: 3,650
IL 4/13
GoodOver: ICRR
2.9 mi S of IL 4/13 Jct, Washington, IL
Built 1996 Load: 34.7 t ADT: 4,900
FAS RT 831
GoodOver: LITTLE MUDDY RIVER
0.20 MI WEST RADOM, Washington, IL
Built 1982 Load: 34.7 t ADT: 625
IL 78
GoodOver: FRENCH CREEK
S EDGE MORRISON, Whiteside, IL
Built 2015 Load: 34.7 t ADT: 2,150
Danne Road (TR 221
GoodOver: Branch Plum Creek
0.7 M E of Klemme Rd, Will, IL
Built 2020 Load: 34.7 t ADT: 525
STELLAR LN
GoodOver: RETENTION POND
1.3M E IL59 OFF 127T, Will, IL
Built 2003 Load: 34.7 t ADT: 75
RIVER ROAD
GoodOver: HACKEY CREEK
.2 MI S CHERRY VALLY, Winnebago, IL
Built 1995 Load: 34.7 t ADT: 225
HARRISON AVE W B
GoodOver: CN & UP RR
1 MI E OF IL 251, Winnebago, IL
Built 2007 Load: 34.7 t ADT: 16,100
FAI 70A
GoodOver: MISSISSIPPI RIVER
RIVER CROSSING MAIN, St. Clair, IL
Built 2014 Load: 34.8 t ADT: 44,300
FAI 172 NB
GoodOver: MILL CREEK
.8MI S I172/IL96, Adams, IL
Built 1981 Load: 35.0 t ADT: 4,875
IL 173
GoodOver: BR. BEAVER CREEK
2.7 MI. E. OF IL 76, Boone, IL
Built 2000 Load: 35.0 t ADT: 4,100
TR 208
GoodOver: Branch of Little Crk
1.25 MI S FAS 584, Brown, IL
Built 2021 Load: 35.0 t ADT: 50
IL 100
GoodOver: CRATER CREEK
N OF MICHAEL MP 6.3, Calhoun, IL
Built 1996 Load: 35.0 t ADT: 1,350
FAS 516
GoodOver: Salt Fork River
0.5 MI NE of Sidney, Champaign, IL
Built 2021 Load: 35.0 t ADT: 725
IL 58
GoodOver: SALT CREEK
1 M E IL 53, Cook, IL
Built 1928 Load: 35.0 t ADT: 32,800
FAU 8324 -TRIMBLE
GoodOver: STREAM
0.75 MI NE ROBINSON, Crawford, IL
Built 2010 Load: 35.0 t ADT: 3,050
TR 54
GoodOver: Dogwood Creek
0.5 Mi. SE Oblong, Crawford, IL
Built 2019 Load: 35.0 t ADT: 100
TR 52
GoodOver: STREAM
3.5 MI NE WAYNESVILL, De Witt, IL
Built 1983 Load: 35.0 t ADT: 50
TR-263
GoodOver: FULFER CREEK
2 MI SW GILMORE, Effingham, IL
Built 1988 Load: 35.0 t ADT: 50
FAS 1934
GoodOver: HOGTHIEF CREEK
3.5M N ELIZABETHTOWN, Hardin, IL
Built 1991 Load: 35.0 t ADT: 325
TR 379
GoodOver: BR. S. EDWARDS RIVER
3.0 MI W BISHOP HILL, Henry, IL
Built 1978 Load: 35.0 t ADT: 75
US 52
GoodOver: MARTINTON DITCH NO 3
2.55 MI E OF IL 1, Iroquois, IL
Built 2015 Load: 35.0 t ADT: 1,700
TR 188
GoodOver: PRAIRIE CR
2 MI E L'ERABLE, Iroquois, IL
Built 1975 Load: 35.0 t ADT: 50
CH 4 OVER PIKE CR
GoodOver: PIKE CREEK
3.25 MI W SBI 1, Iroquois, IL
Built 2022 Load: 35.0 t ADT: 425
TR 221
GoodOver: TALBOTT HOLLOW DITCH
SW 1/4 SEC 11-9-4, Jackson, IL
Built 1982 Load: 35.0 t ADT: 50
Fairground Rd /CH
GoodOver: Boyer Creek
4.3 Mi N of IL 16, Jersey, IL
Built 2021 Load: 35.0 t ADT: 200
TWP RD 111
GoodOver: DUTCHMAN CREEK
NW1/4 SEC30 T12S,R3E, Johnson, IL
Built 1976 Load: 35.0 t ADT: 225
US 30
GoodOver: SUGAR GROVE BR
0.5 M E of Dugan Rd, Kane, IL
Built 2015 Load: 35.0 t ADT: 11,900
TR 183
GoodOver: DEER CREEK
5.25 MI SW ST ANNE, Kankakee, IL
Built 1974 Load: 35.0 t ADT: 175
FOX RIVER DRIVE
GoodOver: HOLLENBACK CREEK
CH1 OVER HOLLENBACK, Kendall, IL
Built 1953 Load: 35.0 t ADT: 2,600
CH. 23
GoodOver: Vermillion River
E 651, N 2525, LaSalle, IL
Built 2017 Load: 35.0 t ADT: 900
IL 26
GoodOver: 3 MILE BRANCH
2.9 MI. N. OF US 30, Lee, IL
Built 2000 Load: 35.0 t ADT: 2,050
I-88 (E-W TOLLWAY)
GoodOver: STREAM
4 MI E WHIT'SD CO LN, Lee, IL
Built 1972 Load: 35.0 t ADT: 15,700
TR-39
GoodOver: BROUGHTON CREEK
3290E,2900N, Livingston, IL
Built 1994 Load: 35.0 t ADT: 50
FAU 8877/NEW POAG
GoodOver: ICG & CONRAIL RR
1 MI. S. HARFORD, Madison, IL
Built 1988 Load: 35.0 t ADT: 5,500
TR-201
GoodOver: CROOKED CREEK
1 MI NE SALEM, Marion, IL
Built 1981 Load: 35.0 t ADT: 325
TR-64
GoodOver: LOST CREEK
2 MI NW ODIN, Marion, IL
Built 1983 Load: 35.0 t ADT: 50
TR-278
GoodOver: SOUTH CREEK
1.5 MI N CARTTER, Marion, IL
Built 1984 Load: 35.0 t ADT: 100
TR-116
GoodOver: DAVIDSON CREEK
3 MI N ODIN, Marion, IL
Built 1987 Load: 35.0 t ADT: 125
TR-297
GoodOver: BRANCH FULTON CREEK
3 MI S IUKA, Marion, IL
Built 1992 Load: 35.0 t ADT: 75
FAS-371 (CH-12)
GoodOver: BNSF RR
2.5MI NW OF WASHBURN, Marshall, IL
Built 1999 Load: 35.0 t ADT: 725
Showing 22,251-22,300 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 |