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 72
GoodOver: TYLER CREEK
2.2 M E of IL 47, Kane, IL
Built 2017 Load: 39.2 t ADT: 12,700
HILL AVE (AURORA)
GoodOver: WAUBANSEE CREEK
0.5 M N OF US 34, Kane, IL
Built 2003 Load: 39.2 t ADT: 17,400
AUSTIN AVENUE
GoodOver: INDIAN CREEK
.3MI S SHEFFER RD, Kane, IL
Built 2012 Load: 39.2 t ADT: 1,150
IL 115
GoodOver: Reddick Creek
1.7M N of CABERY, Kankakee, IL
Built 2016 Load: 39.2 t ADT: 775
TR 48
GoodOver: N BONFIELD BROOK
3.5 MI NW OF BONFIEL, Kankakee, IL
Built 1977 Load: 39.2 t ADT: 300
ILL 71
GoodOver: MORGAN CREEK
2.20 MI NE OF IL 126, Kendall, IL
Built 1997 Load: 39.2 t ADT: 11,700
GALENA RD/FAU 2502
GoodOver: BLACKBERRY CREEK
CH9 OVR BLACKBERRY, Kendall, IL
Built 2018 Load: 39.2 t ADT: 7,600
IL 22
GoodOver: INDIAN CREEK TRIB
0.1 MI EAST OF US 45, Lake, IL
Built 2009 Load: 39.2 t ADT: 20,600
TR 101
GoodOver: ROODS CREEK
N4201, E.2710, LaSalle, IL
Built 1992 Load: 39.2 t ADT: 300
TR-164
GoodOver: BRUSHY CREEK
2 MI W PINKSTAFF, Lawrence, IL
Built 1983 Load: 39.2 t ADT: 50
NEW HOLLAND-MIDDLE
GoodOver: SUGAR CK OVERFLOW
1.5 M S NEW HOLLAND, Logan, IL
Built 1963 Load: 39.2 t ADT: 600
FAS 551 CH 27 Dame
GoodOver: Spring Creek
3.1 Mi. NE Blue Moun, Macon, IL
Built 2020 Load: 39.2 t ADT: 175
IL 255 NB (FAP310N
GoodOver: FARMERS ACCESS RD
2 MI. SO. OF IL 143, Madison, IL
Built 1995 Load: 39.2 t ADT: 28,300
IL 255 SB (FAP310S
GoodOver: FARMERS ACCESS RD
2 MI. SO. OF IL 143, Madison, IL
Built 1995 Load: 39.2 t ADT: 28,300
MERIDIAN CONNECTOR
GoodOver: JUDY'S CREEK
.31 EAST OF 270, Madison, IL
Built 2001 Load: 39.2 t ADT: 2,350
FAS-1788
GoodOver: DUMS CREEK
1.5 MI E BRUBAKER, Marion, IL
Built 1961 Load: 39.2 t ADT: 300
TR 100A
GoodOver: TROUBLESOME CREEK
SW-35-T5NR4W, McDonough, IL
Built 2001 Load: 39.2 t ADT: 250
IL 176
GoodOver: KISHWAUKEE RIVER
2 M E OF IL 47, McHenry, IL
Built 2000 Load: 39.2 t ADT: 10,200
ALDEN ROAD
GoodOver: BR NIPPERSINK CREEK
0.2MI.N OF IL 173, McHenry, IL
Built 2010 Load: 39.2 t ADT: 2,300
059 TR 1
GoodOver: BIG APPLE BR
1.6 mi W CH 38, Morgan, IL
Built 2005 Load: 39.2 t ADT: 75
PINES ROAD
GoodOver: GALE CREEK
.94 MI W OF OREGON, Ogle, IL
Built 2005 Load: 39.2 t ADT: 1,900
IL 4-FAP 686
GoodOver: TRIB TO COX CREEK
0.6 MI N WILLISVILLE, Perry, IL
Built 2002 Load: 39.2 t ADT: 2,550
FAS 2599
GoodOver: WALNUT CREEK
.3M W IL 96, Pike, IL
Built 2001 Load: 39.2 t ADT: 300
FAS 2936 (UNMARKED
GoodOver: BRIAR CREEK
NCL-PULASKI, Pulaski, IL
Built 1992 Load: 39.2 t ADT: 950
IL 3
GoodOver: BLACK CREEK
W of WCL Red Bud, Randolph, IL
Built 1995 Load: 39.2 t ADT: 8,400
CH 5 - FAS 863
GoodOver: Little Mill Creek
3 Mi N Rockwood, Randolph, IL
Built 2020 Load: 39.2 t ADT: 225
FAS 899
GoodOver: UNNAMED CREEK
.4 M W C. MILLS RD, Saline, IL
Built 2014 Load: 39.2 t ADT: 375
IL 100
GoodOver: DUTCHMAN'S CREEK
E EDGE BROWNING, Schuyler, IL
Built 1989 Load: 39.2 t ADT: 600
TR 395
GoodOver: POLECAT CREEK
3.4 MI NE HERRICK, Shelby, IL
Built 1986 Load: 39.2 t ADT: 75
DUBLIN RD.
GoodOver: YELLOW CR BRANCH
2 MI. N. PEARL CTY, Stephenson, IL
Built 1966 Load: 39.2 t ADT: 575
MS7955(STRATFORD D
GoodOver: FARM CREEK
NW-14-T26NR3W, Tazewell, IL
Built 2020 Load: 39.2 t ADT: 225
ILL 119(FAP 711)
GoodOver: N FORK VERMILION RIV
2 MI E OF IL 1, Vermilion, IL
Built 2013 Load: 39.2 t ADT: 1,350
OLD US 34
GoodOver: CEDAR CR TRIB
.5 MI E OF MONMOUTH, Warren, IL
Built 2002 Load: 39.2 t ADT: 450
IL 40
GoodOver: ROCK RIVER
STERLING & ROCK FALL, Whiteside, IL
Built 2012 Load: 39.2 t ADT: 19,800
WOLF RD
GoodOver: MARLEY CREEK
0.88 M S COOK CTY, Will, IL
Built 1995 Load: 39.2 t ADT: 8,000
Kankakee Co Line R
GoodOver: Pike Creek
2.1 MI E of Sollitt, Will, IL
Built 2023 Load: 39.2 t ADT: 1,450
Lily Cache Rd
GoodOver: Lily Cache Creek
0.1 M N Caton Farm R, Will, IL
Built 2020 Load: 39.2 t ADT: 1,800
ILL 166
GoodOver: S FORK SALINE RIVER
3.6 MI S OF ILL 13, Williamson, IL
Built 1991 Load: 39.2 t ADT: 2,100
CS 1108-CHAMPIONS
GoodOver: UNNAMED STREAM
KOKOPELLI SUBDVSION, Williamson, IL
Built 1996 Load: 39.2 t ADT: 600
PECATONICA RD
GoodOver: DRAINAGE DITCH
S. EDGE PECATONICA, Winnebago, IL
Built 1996 Load: 39.2 t ADT: 4,350
HOLVERSON RD
GoodOver: S BR OF OTTER CREEK
1MI W OF DURAND, Winnebago, IL
Built 2012 Load: 39.2 t ADT: 50
WELDON RD
GoodOver: UNNAMED STREAM
0.2 MI N OF US 20, Winnebago, IL
Built 1985 Load: 39.2 t ADT: 300
SEMINARY ST
GoodOver: KEITH CREEK
0.5 MI N OF 15TH AVE, Winnebago, IL
Built 2021 Load: 39.2 t ADT: 1,150
ILL 127
GoodOver: JACKSON CREEK
NEAR NCL OF TAMMS, Alexander, IL
Built 1990 Load: 39.5 t ADT: 1,150
TR 13
GoodOver: TRIB TO BEARCAT CK.
.74 MI S PANAMA, Bond, IL
Built 1996 Load: 39.5 t ADT: 25
TR 82 Reno Road
GoodOver: Elm Point Branch
0.9 Mi N of Reno, Bond, IL
Built 2018 Load: 39.5 t ADT: 100
IL 40 FAP 646
GoodOver: SPOON CREEK TRIB 1
2.3 MI N OF STARK CO, Bureau, IL
Built 1985 Load: 39.5 t ADT: 1,100
FAS 522(CH 12)
GoodOver: DITCH
N OF BONGARD RD, Champaign, IL
Built 1984 Load: 39.5 t ADT: 400
FAP 709 (US 136)
GoodOver: BIG DITCH
1.75 MI W OF RANTOUL, Champaign, IL
Built 2007 Load: 39.5 t ADT: 2,850
TR 30 C
GoodOver: LONE TREE CREEK
0.2 MI S OF FOOSLAND, Champaign, IL
Built 1969 Load: 39.5 t ADT: 50
Showing 23,251-23,300 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 |