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
FAI-55 & OR 66
GoodOver: WOODS RUN
5.20 MI S GARDNER, Grundy, IL
Built 1979 Load: 35.6 t ADT: 24,250
INDIAN TRAIL RD
GoodOver: HOG RUN
.25 MI W GONNAM RD, Grundy, IL
Built 1988 Load: 35.6 t ADT: 150
GRANDRIDGE RD CH C
GoodOver: JOHNNY RUN
0.65 MI E ILL RT 47, Grundy, IL
Built 2019 Load: 35.6 t ADT: 950
GARDNER Rd/FAS 292
GoodOver: GOOSEBERRY CREEK
0.07 MI E TR 120, Grundy, IL
Built 2005 Load: 35.6 t ADT: 1,550
IL 96
GoodOver: SIDE ROAD DITCH
1.4 MI E NIOTA, Hancock, IL
Built 2008 Load: 35.6 t ADT: 1,550
TR 156 B
GoodOver: SHOAL CREEK
4 MI SW OF M'BORO, Jackson, IL
Built 1979 Load: 35.6 t ADT: 50
NFSR 724
GoodOver: JOHNSON CREEK
0.1 MI. S. OF HWY 151, Jackson, IL
Built 2016 Load: 35.6 t ADT: 100
I-88
GoodOver: STREAM
7.3 M W IL-47, Kane, IL
Built 1972 Load: 35.6 t ADT: 31,700
WENMOTH RD
GoodOver: MILL CREEK
2.7 MI W BATAVIA, Kane, IL
Built 1977 Load: 35.6 t ADT: 5,050
LISBON CENTER RD
GoodOver: ROODS CK
0.3 MI E OF LINE RD, Kendall, IL
Built 1981 Load: 35.6 t ADT: 50
TR 268
GoodOver: LITTLERS CREEK
NE-31-T9NR4E, Knox, IL
Built 1997 Load: 35.6 t ADT: 10
ILL 23/IL 71 FAP 6
GoodOver: ILL MICH CANAL
LASALLE ST IN OTTAWA, LaSalle, IL
Built 1999 Load: 35.6 t ADT: 10,400
ILL 23 & 71
GoodOver: ILL MICH CANAL
COLUMBUS ST OTTAWA, LaSalle, IL
Built 1999 Load: 35.6 t ADT: 10,800
TR 75A
GoodOver: VERMILION R
1.25 MI SW CORNELL, Livingston, IL
Built 1920 Load: 35.6 t ADT: 50
TR 143
GoodOver: DEER CREEK TRIBUTARY
2 MI S LINCOLN, Logan, IL
Built 1989 Load: 35.6 t ADT: 125
TR 13
GoodOver: SUGAR CREEK
2 MI E UNION, Logan, IL
Built 1981 Load: 35.6 t ADT: 50
OLD IL 4
GoodOver: SHEARLES BR TRIBUTRY
1.6M S IL 4,S GIRARD, Macoupin, IL
Built 2010 Load: 35.6 t ADT: 150
MAIN ST
GoodOver: JUDY'S BRANCH
S. MERIDIAN RD, Madison, IL
Built 2008 Load: 35.6 t ADT: 4,200
KIN LOU RD-FAS 270
GoodOver: SKILLET FORK
1 MI W CLAY CO LN, Marion, IL
Built 1997 Load: 35.6 t ADT: 500
TR-280
GoodOver: CROOKED CREEK
2 MI SE SALEM, Marion, IL
Built 1977 Load: 35.6 t ADT: 225
TR-16
GoodOver: PRAIRIE CREEK
0.5 MI SW SANDOVAL, Marion, IL
Built 1985 Load: 35.6 t ADT: 225
TR-131
GoodOver: E FK KASKASKIA RIVER
3 MI SW PATOKA, Marion, IL
Built 1982 Load: 35.6 t ADT: 50
FAS-2789
GoodOver: LOST CREEK
0.5 MI S FORBES ST P, Marion, IL
Built 1992 Load: 35.6 t ADT: 350
NEW COLUMBIA ROAD
GoodOver: GURLEY DITCH
3 MI N ROUND KNOB, Massac, IL
Built 2014 Load: 35.6 t ADT: 650
US 150
GoodOver: KICKAPOO CREEK
5.1 MI N OF LEROY, McLean, IL
Built 1997 Load: 35.6 t ADT: 4,250
TR 462
GoodOver: N FORK SALT CREEK
3.0 MI NE LEROY, McLean, IL
Built 2021 Load: 35.6 t ADT: 150
TR 262/TOWANDA AVE
GoodOver: SIX MILE CREEK
3.0 MILE W TOWANDA, McLean, IL
Built 2006 Load: 35.6 t ADT: 900
NOKOMIS RD
GoodOver: SHOAL CREEK
7 MI. W NOKOMIS, Montgomery, IL
Built 2004 Load: 35.6 t ADT: 700
MERIDIAN RD
GoodOver: BRANCH STILLMAN CRK.
1.5MI S STILLMAN VAL, Ogle, IL
Built 1971 Load: 35.6 t ADT: 1,100
BROOKVILLE RD
GoodOver: EAGLE CREEK
5 MI. W. OF POLO, Ogle, IL
Built 1996 Load: 35.6 t ADT: 75
TR 18
GoodOver: PULASKI SLOUGH
2 MI SW OF PULASKI, Pulaski, IL
Built 1978 Load: 35.6 t ADT: 125
IL 71
GoodOver: INTERMITTENT STREAM
3.18 MI W OF IL 89, Putnam, IL
Built 2007 Load: 35.6 t ADT: 4,100
IL 34
GoodOver: GASSAWAY BRANCH
GALATIA, Saline, IL
Built 2019 Load: 35.6 t ADT: 2,750
FAP 332-US 45
GoodOver: DRAINAGE DITCH
IN ELDORADO, Saline, IL
Built 2007 Load: 35.6 t ADT: 10,900
FAS 898
GoodOver: POSSUM TAIL BRANCH
0.03 MI N ILL 13, Saline, IL
Built 1982 Load: 35.6 t ADT: 1,250
IL 29(WALNUT ST RD
GoodOver: SANGAMON R OVERFLOW
2.9M N IL 4/VETERANS, Sangamon, IL
Built 1997 Load: 35.6 t ADT: 6,950
TR 67 (5.87N ?)
GoodOver: WOLF CREEK
3.0 N DAWSON, Sangamon, IL
Built 1966 Load: 35.6 t ADT: 50
FAU 8153(CH 22)
GoodOver: LAKE SPRINGFIELD
2.0 MI NE CHATHAM, Sangamon, IL
Built 1991 Load: 35.6 t ADT: 6,900
IL 98
GoodOver: DILLON CREEK
1.24 M W OF FAI 155, Tazewell, IL
Built 2008 Load: 35.6 t ADT: 4,100
I-74 (EB)
GoodOver: SALT FORK VERM RIVER
W OF DANVILLE, Vermilion, IL
Built 1962 Load: 35.6 t ADT: 10,600
FAP 328 (US 45)
GoodOver: BRANCH OF DEER CREEK
3 MI N GEFF, Wayne, IL
Built 2008 Load: 35.6 t ADT: 2,600
CEDAR RD
GoodOver: LONG RUN CR
0.5 MI N OF 143RD ST, Will, IL
Built 1986 Load: 35.6 t ADT: 650
ILL 13
GoodOver: STREAM
ECL OF MARION, Williamson, IL
Built 1962 Load: 35.6 t ADT: 14,400
FAS 1900
GoodOver: GRASSY CREEK
7 MI S CARTERVILLE, Williamson, IL
Built 1942 Load: 35.6 t ADT: 1,950
TELEGRAPH RD
GoodOver: COOLIDGE CREEK
4 MI NE OF PECATONCA, Winnebago, IL
Built 2014 Load: 35.6 t ADT: 950
HARRISON AVE E B
GoodOver: CN & UP RR
1 MI E OF IL 251, Winnebago, IL
Built 2009 Load: 35.6 t ADT: 16,100
CH 1 (FAS 357)
GoodOver: TRIB TO SNAG CREEK
1 Mi E of Ill Rte 89, Woodford, IL
Built 2016 Load: 35.6 t ADT: 425
TR 46
GoodOver: BLACK CREEK TRIB
3 MI W OF OLIVE BRAN, Alexander, IL
Built 1994 Load: 36.0 t ADT: 25
FAS 253/CH 10
GoodOver: HICKORY CREEK
2.5 MI. N. MINERAL, Bureau, IL
Built 1949 Load: 36.0 t ADT: 200
IL 78
GoodOver: STREAM
2 MI S OF JO DAVIESS, Carroll, IL
Built 1993 Load: 36.0 t ADT: 625
Showing 22,401-22,450 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 |