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
IL 94
GoodOver: DEER CREEK
6.3M N US136,CARTHAG, Hancock, IL
Built 1994 Load: 38.9 t ADT: 2,000
TR 0311
GoodOver: LONG CREEK
0.5MI NO. CARTHAGE, Hancock, IL
Built 1989 Load: 38.9 t ADT: 75
IL 81
GoodOver: CAMP CREEK TRIB.
.7 MI W OF CAMBRIDGE, Henry, IL
Built 1994 Load: 38.9 t ADT: 1,650
WEST ROAD
GoodOver: TRIB OF SIX MILE CRK
DOWELL WEST CORP LIM, Jackson, IL
Built 2003 Load: 38.9 t ADT: 500
US 30
GoodOver: W BR BIG ROCK CREEK
.6 E OF DEKALB CO L, Kane, IL
Built 1984 Load: 38.9 t ADT: 5,050
US 30
GoodOver: E BR BIG ROCK CREEK
1.7M E OF KANE-DEK L, Kane, IL
Built 1984 Load: 38.9 t ADT: 5,300
Illinois Avenue
GoodOver: 7th Avenue Creek
0.10 MI S of IL 64, Kane, IL
Built 2021 Load: 38.9 t ADT: 700
Indiana Avenue
GoodOver: 7th Avenue Creek
0.15 MI S of IL 64, Kane, IL
Built 2021 Load: 38.9 t ADT: 1,800
South Avenue (MS40
GoodOver: 7th Avenue Creek
0.25 MI S of IL 64, Kane, IL
Built 2021 Load: 38.9 t ADT: 900
IL 1
GoodOver: SPRING CREEK
4.5 MI. S. IL 17, Kankakee, IL
Built 1993 Load: 38.9 t ADT: 4,450
ILL 17
GoodOver: HORSE CREEK
.7MI E OF HERCHER RD, Kankakee, IL
Built 1997 Load: 38.9 t ADT: 3,650
US 52
GoodOver: SARATOGA CR
4.8 MI W OF ILL 47, Kendall, IL
Built 2017 Load: 38.9 t ADT: 1,400
IL 43
GoodOver: N BR CHICAGO RIVER
0.3 M S OF IL 60, Lake, IL
Built 2003 Load: 38.9 t ADT: 16,400
IL 71
GoodOver: INTERMIT STREAM
5.90 MI E OF IL 178, LaSalle, IL
Built 2007 Load: 38.9 t ADT: 1,700
TR 314
GoodOver: BUCK CREEK
E 18, N 3450, LaSalle, IL
Built 1998 Load: 38.9 t ADT: 675
IL 17 FAP 41
GoodOver: DRAINAGE DITCH
3.4 MI E OF IL 47, Livingston, IL
Built 2007 Load: 38.9 t ADT: 2,300
TR-134B
GoodOver: Wolf Creek
2192N, 1710E, Livingston, IL
Built 2016 Load: 38.9 t ADT: 25
TR 32 (600E)
GoodOver: MOLE CREEK
4 Miles SE of Long Point, Livingston, IL
Built 2020 Load: 38.9 t ADT: 75
FAS-1464 (CH-16)
GoodOver: Prairie Creek Ditch
0.04 S County Line, Logan, IL
Built 2018 Load: 38.9 t ADT: 225
FAS 733(CH 20)
GoodOver: Macoupin Creek
.76 mi S TR 205, Macoupin, IL
Built 2012 Load: 38.9 t ADT: 450
Selmaville Road
GoodOver: CROOKED CREEK
3.5 MI S US-50, Marion, IL
Built 1984 Load: 38.9 t ADT: 2,550
TR 218C
GoodOver: VERMILION CREEK
0.5 MI W SALEM, Marion, IL
Built 1985 Load: 38.9 t ADT: 600
TR-388
GoodOver: FULTON CREEK
4.5 MI NE CARTTER, Marion, IL
Built 1988 Load: 38.9 t ADT: 225
TR-138
GoodOver: CROOKED CREEK
3 MI SE ODIN, Marion, IL
Built 1990 Load: 38.9 t ADT: 100
TR-58A
GoodOver: DEER CREEK
N OF PATOKA, Marion, IL
Built 1992 Load: 38.9 t ADT: 100
BOTTERMAN ROAD
GoodOver: UNAMED TRIB COON CRK
0.4 MI W SEEMAN RD, McHenry, IL
Built 2004 Load: 38.9 t ADT: 350
US 24/ FAP 317
GoodOver: ROOKS CREEK
5.12, McLean, IL
Built 1995 Load: 38.9 t ADT: 4,200
US 136/FAP 315
GoodOver: PRAIRIE CREEK
7.04 MI W OF US 51, McLean, IL
Built 2006 Load: 38.9 t ADT: 3,000
TR 97
GoodOver: TRIB EDWARDS RIVER
SE1/4 SEC32 T15NR2W, Mercer, IL
Built 2000 Load: 38.9 t ADT: 25
TR 24
GoodOver: LAKE FORK CREEK
3.6 MI NW WALSHVILLE, Montgomery, IL
Built 1983 Load: 38.9 t ADT: 50
LOWELL PARK ROAD
GoodOver: UNNAMED CREEK
SW EDGE OF MT MORRIS, Ogle, IL
Built 2005 Load: 38.9 t ADT: 950
FAS 1517(US 150)
GoodOver: MADDEN CREEK
.5 MI E OF MANSFIELD, Piatt, IL
Built 1993 Load: 38.9 t ADT: 1,650
TR 7A (OLD US 36)
GoodOver: NORFOLK SOUTHERN RR
S NEW HNBL BR E ABUT, Pike, IL
Built 1990 Load: 38.9 t ADT: 150
IL 96
GoodOver: HORTON CREEK
2M NW ROCKPORT, Pike, IL
Built 1991 Load: 38.9 t ADT: 1,100
ILL 106
GoodOver: E BRANCH KISER CREEK
7.5 MI SE BARRY, Pike, IL
Built 1994 Load: 38.9 t ADT: 1,600
FAS 1930
GoodOver: BARREN CREEK
1 MI NW BAY CITY, Pope, IL
Built 1967 Load: 38.9 t ADT: 125
RUBY YEWELL
GoodOver: FLICK BRANCH
3.9MI NW GOLCONDA, Pope, IL
Built 2017 Load: 38.9 t ADT: 25
TR 60
GoodOver: BRIAR CREEK
2 MI E OF PULASKI, Pulaski, IL
Built 1984 Load: 38.9 t ADT: 25
CH 16
GoodOver: MAXWELL CREEK
2 MILE S. EDEN, Randolph, IL
Built 1992 Load: 38.9 t ADT: 2,350
CH 62
GoodOver: MILL CR
5 MI SW OF MILAN, Rock Island, IL
Built 1986 Load: 38.9 t ADT: 950
NEW IL 13 EB
GoodOver: POSSUM TAIL BRANCH
2.1 MI E SAL/WMSN CL, Saline, IL
Built 1997 Load: 38.9 t ADT: 9,100
NEW IL 13 WB
GoodOver: POSSUM TAIL BRANCH
2.1 MI E SAL/WMSN CL, Saline, IL
Built 1997 Load: 38.9 t ADT: 9,100
US 45
GoodOver: PANKEY BRANCH
1 MI SW HARRISBURG, Saline, IL
Built 1992 Load: 38.9 t ADT: 4,400
TR 67A
GoodOver: TRIB TO BRUSH CREEK
0.7 MI E US RT 45, Saline, IL
Built 1986 Load: 38.9 t ADT: 25
CH-16 (Tuller Rd)
GoodOver: Stream
1.3 MI S US 45, Saline, IL
Built 2003 Load: 38.9 t ADT: 400
HAGAN ROAD
GoodOver: INDIAN CREEK
2 MI NW ELDORADO, Saline, IL
Built 2020 Load: 38.9 t ADT: 25
CH 23
GoodOver: LITTLE WABASH RIVER
3.9 MI W OF SIGEL, Shelby, IL
Built 1895 Load: 38.9 t ADT: 200
TR 138
GoodOver: TRIB FLAT BRANCH
2 MI W 2 MI N WESTEV, Shelby, IL
Built 1984 Load: 38.9 t ADT: 75
I-70 WB
GoodOver: KCSRR, CSXRR
QuadLevel 55/70WB to 70WB, St. Clair, IL
Built 2014 Load: 38.9 t ADT: 21,000
OLD IL 26
GoodOver: RICHLAND CREEK TRIB.
0.5 MI S ORANGEVILLE, Stephenson, IL
Built 1991 Load: 38.9 t ADT: 775
Showing 23,151-23,200 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |