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 17 EB
GoodOver: Baker Creek/Exline Sloug
2.27 M E of I-57, Kankakee, IL
Built 1964 Load: 57.3 t ADT: 11,900
IL 4
GoodOver: SILVER CREEK
1.9MI S OF IL 140, Madison, IL
Built 2006 Load: 57.3 t ADT: 4,350
ILL 26
GoodOver: STRAWN RUN CREEK
IN LACON, Marshall, IL
Built 2001 Load: 57.3 t ADT: 2,500
IL 176
GoodOver: KISHWAUKEE RIVER
0.9 M W OF GEE RD, McHenry, IL
Built 2008 Load: 57.3 t ADT: 8,600
TR 547
GoodOver: Ditch
SW OF BELLFLOWER, McLean, IL
Built 2010 Load: 57.3 t ADT: 25
IL 154
GoodOver: ICRR
2.7 M E OF BALDWIN, Randolph, IL
Built 1994 Load: 57.3 t ADT: 2,950
IL ROUTE 92
GoodOver: STREAM
1.5 MI E ANDALUSIA, Rock Island, IL
Built 2006 Load: 57.3 t ADT: 4,450
US 51
GoodOver: DRAINAGE DITCH
3M N IL 16, Christian, IL
Built 2013 Load: 57.7 t ADT: 3,600
ASHLEY RD, FAU 597
GoodOver: SARATOGA CR
.99 MI N GRANVILLE R, Grundy, IL
Built 1960 Load: 57.7 t ADT: 700
CH 33
GoodOver: PECUMSAUGEM CREEK
N 33RD,E 910, LaSalle, IL
Built 2021 Load: 57.7 t ADT: 525
CO RD 16
GoodOver: CEDAR CREEK
N 2451,E 175, LaSalle, IL
Built 1973 Load: 57.7 t ADT: 2,150
IL 16
GoodOver: WEST SHOAL CREEK
.7M E LITCHFIELD LK, Montgomery, IL
Built 1924 Load: 57.7 t ADT: 6,600
I- 57 SB RMP STUEN
GoodOver: EAST BR HICKORY CRK
3.5 M E of US 30, Will, IL
Built 2015 Load: 57.7 t ADT: 2,750
STUNKELWB to I-57N
GoodOver: EAST BR HICKORY CR
0.2 M W Central Av, Will, IL
Built 2015 Load: 57.7 t ADT: 2,650
Drecksler Road
GoodOver: BLACK WALNUT CREEK
0.5 MI SO IL 50, Will, IL
Built 1962 Load: 57.7 t ADT: 1,350
TR 4
GoodOver: BR BLUE CR
250 EAST 1575 NORTH, Woodford, IL
Built 2020 Load: 57.7 t ADT: 250
IL 17 WB
GoodOver: Baker Creek/Exline Sloug
2.27 M E of I-57, Kankakee, IL
Built 1964 Load: 58.0 t ADT: 11,900
PRAIRIE ST
GoodOver: CEDAR CREEK
200 BLK N. PRAIRIE, Knox, IL
Built 1930 Load: 58.0 t ADT: 1,200
IL 146
GoodOver: BIG GRAND PIERRE CR
0.87 MI W HARDIN CO, Pope, IL
Built 2013 Load: 58.0 t ADT: 900
Canterbury Lane
GoodOver: Lily Cache Creek
0.25 MI NE LILY CACHE, Will, IL
Built 2021 Load: 58.0 t ADT: 3,350
POPLAR GROVE CREEK
GoodOver: BEAVER CREEK
1.0 MI S POPLAR GR, Boone, IL
Built 2023 Load: 58.3 t ADT: 2,550
FAP 332(IL 1)
GoodOver: STREAM
2 MI S WEST UNION, Clark, IL
Built 1995 Load: 58.3 t ADT: 2,700
FAP 828(IL 121)
GoodOver: STREAM
3 MI S OF US-45, Cumberland, IL
Built 2000 Load: 58.3 t ADT: 3,000
FAP 776 (IL 142)
GoodOver: CONTRARY CREEK
9.5 MI S IL 14, Hamilton, IL
Built 2009 Load: 58.3 t ADT: 2,100
TR 134
GoodOver: GREEN RIVER TRIB
3.7 MI W GENESEO, Henry, IL
Built 2020 Load: 58.3 t ADT: 75
TR 185
GoodOver: LICK CREEK
2.8 M SE HETTICK, Macoupin, IL
Built 2007 Load: 58.3 t ADT: 20
IL 4
GoodOver: LAKE FORK CREEK
2.8 MI S JCT 4 & 40, Madison, IL
Built 2006 Load: 58.3 t ADT: 7,000
BEICH RD FAU 6371
GoodOver: LITTLE KICKAPOO CR
0.6 MI N 74 & 55, McLean, IL
Built 1995 Load: 58.3 t ADT: 1,400
IL 185
GoodOver: MCDAVID BRANCH
1 M NW COFFEEN, Montgomery, IL
Built 2016 Load: 58.3 t ADT: 1,900
IL 146
GoodOver: Little Grand Pierre
3 MI W HARDIN COUNTY, Pope, IL
Built 2013 Load: 58.3 t ADT: 900
IL 34/145
GoodOver: PANKEY BRANCH
0.5 MI S HARRISBURG, Saline, IL
Built 2022 Load: 58.3 t ADT: 5,350
IL 96
GoodOver: BURTON CREEK
1.4MI SE I 172/IL96, Adams, IL
Built 2003 Load: 58.6 t ADT: 2,400
IL 104
GoodOver: FISHHOOK CREEK
1.6 MI W PIKE CO LIN, Adams, IL
Built 2004 Load: 58.6 t ADT: 775
TR 148
GoodOver: UNNAMED STREAM
2.5 MI E OF BUDA, Bureau, IL
Built 1989 Load: 58.6 t ADT: 50
TR 178
GoodOver: STEVE BRANCH
3.0 MI SW SHOBONIER, Fayette, IL
Built 2023 Load: 58.6 t ADT: 50
Hillview Eldred Rd
GoodOver: STREAM
4.1 M N JCT 108, Greene, IL
Built 2011 Load: 58.6 t ADT: 400
IL 116 FAP 681
GoodOver: BR OF LANGAN CREEK
3.81 MI W OF I-57, Iroquois, IL
Built 2011 Load: 58.6 t ADT: 850
IL 71/FAP 627
GoodOver: SALT WELLS CR
4.3 MI E OF IL 178, LaSalle, IL
Built 2006 Load: 58.6 t ADT: 1,700
IL 71 (FAP 311)
GoodOver: Trib to Fox River
1.4 mi SW of US 52, LaSalle, IL
Built 2014 Load: 58.6 t ADT: 4,600
US 24 (FAP 317)
GoodOver: S. FORK VERMILION RV
FORREST- W OF IL 47, Livingston, IL
Built 2011 Load: 58.6 t ADT: 4,700
IL 47
GoodOver: S BR KISHWAUKEE RV
2.3 M N of I-90, McHenry, IL
Built 2011 Load: 58.6 t ADT: 25,200
I-355 SB
GoodOver: FIDDYMENT CREEK
.5M N OF IL7, Will, IL
Built 2007 Load: 58.6 t ADT: 71,300
IL 83
GoodOver: DRAINAGE DITCH
0.2 M N IL 38, DuPage, IL
Built 2021 Load: 59.0 t ADT: 62,900
N MARION ST
GoodOver: TRIB TO CRAB ORCHARD
1.21MI N OF FISHER, Jackson, IL
Built 2010 Load: 59.0 t ADT: 500
UNIONVILLE RD
GoodOver: MUD CREEK
6.9 MI E BROOKPORT, Massac, IL
Built 2022 Load: 59.0 t ADT: 350
IL 185
GoodOver: BAYOU CREEK
1.3 M SE COFFEEN, Montgomery, IL
Built 2016 Load: 59.0 t ADT: 1,800
COUNTY HIGHWAY 44
GoodOver: BR OF COPPERAS CREEK
2.6 M S OF ILL 92, Rock Island, IL
Built 1985 Load: 59.0 t ADT: 325
US-45
GoodOver: BEAVER CREEK
1 MI S SPRINGERTN RD, White, IL
Built 2012 Load: 59.0 t ADT: 1,750
TR 64
GoodOver: WALNUT CR
1 MI S METAMORA, Woodford, IL
Built 2017 Load: 59.0 t ADT: 275
US 45 (LAGRANGE RD
GoodOver: CROOKED CREEK
0.3 M N 107TH ST, Cook, IL
Built 2004 Load: 59.3 t ADT: 29,000
Showing 25,151-25,200 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 |