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
I-39/US 51
FairOver: STREAM
2.38 MI N OF ILL 17, Marshall, IL
Built 1991 Load: 48.6 t ADT: 16,500
US 67
FairOver: CAMP CREEK
3 MI N OF INDUSTRY, McDonough, IL
Built 1924 Load: 48.6 t ADT: 2,300
US 136
FairOver: MUD CREEK
2.09 M W OF US 51, McLean, IL
Built 2009 Load: 48.6 t ADT: 3,000
I-55 (SB)
FairOver: BURLINGTN NORTHRN RR
1.8M N IL 16 INT., Montgomery, IL
Built 1973 Load: 48.6 t ADT: 13,250
IL 72
FairOver: BLACK WALNUT CREEK
2 MI. E. OF BYRON, Ogle, IL
Built 1994 Load: 48.6 t ADT: 3,350
ILL 251
FairOver: KYTE CREEK/Bike Path
0.6 MI. N. OF IL 38, Ogle, IL
Built 1996 Load: 48.6 t ADT: 7,350
ILL 8
FairOver: BIG HOLLOW CREEK
.75 MI N POTTSTOWN, Peoria, IL
Built 2010 Load: 48.6 t ADT: 2,750
VETERANS/IL 4 (NB)
FairOver: SPRING CREEK
.27M S JEFFRSN/IL125, Sangamon, IL
Built 1984 Load: 48.6 t ADT: 22,100
TR 223
FairOver: STREAM
1.0 MI NW STRASBURG, Shelby, IL
Built 2013 Load: 48.6 t ADT: 75
I 255 NB RMP 1609
FairOver: CANTEEN CREEK
.50 S MADISON CO LIN, St. Clair, IL
Built 1983 Load: 48.6 t ADT: 1,850
WB I-74
FairOver: DIVERSION CHANNEL
7/8 MI W OF ILL 116, Tazewell, IL
Built 1959 Load: 48.6 t ADT: 28,500
US 150
FairOver: LITTLE FARM CREEK
3M E 150 & 8 E.PEO., Tazewell, IL
Built 1992 Load: 48.6 t ADT: 5,000
I-74 (EB)
FairOver: STONY CREEK
S OF DANVILLE, Vermilion, IL
Built 1964 Load: 48.6 t ADT: 9,150
I-74 (WB)
FairOver: STONY CREEK
S OF DANVILLE, Vermilion, IL
Built 1964 Load: 48.6 t ADT: 9,150
IL 9 (FAP 697)
FairOver: CREEK
.4 MI E OF IL 1, Vermilion, IL
Built 1967 Load: 48.6 t ADT: 4,700
FAU 7045(Bowman Av
FairOver: STREAM
BOWMAN/ N. POLAND RD, Vermilion, IL
Built 1939 Load: 48.6 t ADT: 4,450
IL 148-FAP 726
FairOver: LITTLE WOLF CREEK
3.3 MI N OF I-57, Williamson, IL
Built 1958 Load: 48.6 t ADT: 6,150
9TH STREET
FairOver: KEITH CREEK
0.5 M N OF BROADWAY, Winnebago, IL
Built 1984 Load: 48.6 t ADT: 2,100
I 39/US 51
FairOver: E BRANCH PANTHER CK
2.5 MI N OF US 24, Woodford, IL
Built 1992 Load: 48.6 t ADT: 16,200
I57 RAMP #13.41
FairOver: DITCH
SW OF CHAMPAIGN, Champaign, IL
Built 2006 Load: 48.9 t ADT: 1,150
IL 59 & HORSE PAT
FairOver: POPLAR CREEK
.01 M S IL 58, Cook, IL
Built 1977 Load: 48.9 t ADT: 37,200
FAP 776 (ILL-142)
FairOver: TEN MILE CREEK
2.3 MI S ILL 14, Hamilton, IL
Built 1997 Load: 48.9 t ADT: 2,550
ILL 96
FairOver: DUGOUT CREEK
.5 MI E OF LOMAX, Henderson, IL
Built 1938 Load: 48.9 t ADT: 1,000
FAI 80 EB
FairOver: MUD CREEK
0.7 MI W JCT ILL 78, Henry, IL
Built 1961 Load: 48.9 t ADT: 8,800
FAI-57 NB
FairOver: LANGAN CREEK
2.22 MI S FAS 1322, Iroquois, IL
Built 2014 Load: 48.9 t ADT: 9,550
US 150
FairOver: SPOON RIVER TRIB.
3.8 MI W JCT 180/150, Knox, IL
Built 2003 Load: 48.9 t ADT: 1,100
I-72 (EB)
FairOver: SPRING CREEK
1.25 MI E FORSYTH, Macon, IL
Built 1975 Load: 48.9 t ADT: 6,150
I-72 (WB)
FairOver: SPRING CREEK
1.25 MI E FORSYTH, Macon, IL
Built 1975 Load: 48.9 t ADT: 6,150
FAP 730 US 51
FairOver: PEDESTRIAN WALKWAY
1.93 MI SO OF I-55, McLean, IL
Built 1983 Load: 48.9 t ADT: 23,500
IL 16
FairOver: BRUSH CREEK
1.35M W IL16/127 JCT, Montgomery, IL
Built 1968 Load: 48.9 t ADT: 6,650
FAI 55 and FR's
FairOver: SHOP CREEK TRIB
.76 Mi N IL 108, Montgomery, IL
Built 1942 Load: 48.9 t ADT: 26,800
ILL 128(FAP 770)
FairOver: WILBORN CREEK
1.25 MI S BETHANY RD, Moultrie, IL
Built 1980 Load: 48.9 t ADT: 2,300
ILL 72
FairOver: STILLMAN CREEK
.13 MI E MERIDIAN RD, Ogle, IL
Built 1930 Load: 48.9 t ADT: 3,850
IL 106
FairOver: PIGEON CREEK
3.6M W IL96/HULL, Pike, IL
Built 1965 Load: 48.9 t ADT: 1,350
IL 26/FAS 2370
FairOver: CLEAR CREEK
7.95 MI S OF IL 71, Putnam, IL
Built 2001 Load: 48.9 t ADT: 800
CH 16
FairOver: POND CREEK
0.1 MI E STONEFORT, Saline, IL
Built 1983 Load: 48.9 t ADT: 250
CH 33 (FAS 656)
FairOver: LITTLE WABASH RIVER
2 MI W OF NEOGA, Shelby, IL
Built 2013 Load: 48.9 t ADT: 1,250
IL 117
FairOver: WALNUT CR
1.26 MI S OF US 24, Woodford, IL
Built 2005 Load: 48.9 t ADT: 8,700
IL 133 (FAP 749)
FairOver: LITTLE EMBARRAS R
2.0 MI E OF OAKLAND, Coles, IL
Built 2007 Load: 49.2 t ADT: 2,000
IL 171 NB TO I-55
FairOver: SAN & SHIP CANAL
1 M N ARCHER AVE, Cook, IL
Built 1981 Load: 49.2 t ADT: 14,500
I-90 SKYWAY
FairOver: GROUND SE COMM AVE
0.06 M SE COMM AV, Cook, IL
Built 1958 Load: 49.2 t ADT: 28,700
FAP-328 (US-45)
FairOver: BISHOP CREEK
5 MI S ILL-37 JCT, Effingham, IL
Built 1977 Load: 49.2 t ADT: 3,150
ILL 14
FairOver: BIG MUDDY RIVER
1.8 MI E BUCKNER, Franklin, IL
Built 1923 Load: 49.2 t ADT: 6,750
FAI 80 NB
FairOver: MINERAL CREEK
0.7 MI N JCT US 6, Henry, IL
Built 1965 Load: 49.2 t ADT: 10,800
US 6
FairOver: SPRING CREEK
3.8 MI. E. OF IL 82, Henry, IL
Built 2001 Load: 49.2 t ADT: 2,400
I-55 NB
FairOver: KICKAPOO CREEK
.5 N IL10 NW LINCOLN, Logan, IL
Built 1973 Load: 49.2 t ADT: 15,150
IL 9
FairOver: SHAW CREEK
0.75 MI E OF ILL 41, McDonough, IL
Built 2010 Load: 49.2 t ADT: 800
FAI 72 EB
FairOver: MAUVAISE TERRE CR
0.8MI SW I72/BUS I72, Morgan, IL
Built 1975 Load: 49.2 t ADT: 4,975
FAI 72 WB
FairOver: MAUVAISE TERRE CR
0.8MI SW I72/BUS I72, Morgan, IL
Built 1975 Load: 49.2 t ADT: 4,975
WOOSUNG RD
FairOver: SEVENMILE BRANCH
4.0 MI NW DIXON, Ogle, IL
Built 2010 Load: 49.2 t ADT: 100
Showing 13,201-13,250 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.