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
TR 87A (TH-D10)
GoodOver: N BRANCH CROW CREEK
1.5 Mi W of Toluca, Marshall, IL
Built 2019 Load: 48.9 t ADT: 150
IL 47
GoodOver: KISHWAUKEE RIVER
4.7M S of US14, McHenry, IL
Built 2021 Load: 48.9 t ADT: 18,600
HEMMINGSON ROAD
GoodOver: TRIB S BR KSHWKE RVR
.55 MI E OLSEN RD, McHenry, IL
Built 1940 Load: 48.9 t ADT: 500
IL 64
GoodOver: ELKHORN CREEK
0.7 MILES E OF 52, Ogle, IL
Built 2002 Load: 48.9 t ADT: 625
ILL 34
GoodOver: TRIB TO GIBBON CREEK
1.1 MI S SALINE CO, Pope, IL
Built 1991 Load: 48.9 t ADT: 2,350
FAS 1645 (IL 123)
GoodOver: Ditch
0.14 mi E IL 29, Sangamon, IL
Built 2021 Load: 48.9 t ADT: 525
TR 365
GoodOver: MITCHELL CREEK TRIB
2.5 MI NW COWDEN, Shelby, IL
Built 1986 Load: 48.9 t ADT: 75
US 20
GoodOver: YELLOW CREEK
0.1 MI E JO DAV. CO., Stephenson, IL
Built 1995 Load: 48.9 t ADT: 5,750
IL 50
GoodOver: ROCK CR (MID XING)
0.6 M S PAULING RD, Will, IL
Built 1958 Load: 48.9 t ADT: 5,700
JOLIET STREET
GoodOver: HICKORY CREEK
0.1M NO.PATTERSON RD, Will, IL
Built 1954 Load: 48.9 t ADT: 700
PLAINFIELD-NAPERVI
GoodOver: SPRING BROOK CREEK
0.1MI S 95TH STREET, Will, IL
Built 1940 Load: 48.9 t ADT: 7,100
I-80 EB
GoodOver: MAPLE GROVE CREEK
2 MI N WYANET, Bureau, IL
Built 1963 Load: 49.2 t ADT: 9,500
I-80 WB
GoodOver: MAPLE GROVE CREEK
2 MI N WYANET, Bureau, IL
Built 1963 Load: 49.2 t ADT: 9,500
IL 78
GoodOver: Panther Creek
SW Chandlerville CL, Cass, IL
Built 2012 Load: 49.2 t ADT: 1,450
IL 125
GoodOver: TRIB TO LOST CREEK
2.2 M E BLUFFSRD, Cass, IL
Built 2009 Load: 49.2 t ADT: 3,500
CH-1 (FAS-645)
GoodOver: COTTON CREEK
9.5 MI SO TALORVILLE, Christian, IL
Built 1988 Load: 49.2 t ADT: 2,200
I-90 WB
GoodOver: Salt Creek
1 Mi E. Ill Rte 53, Cook, IL
Built 2015 Load: 49.2 t ADT: 70,650
I-90 EB
GoodOver: Salt Creek
1 Mi E. Ill Rte 53, Cook, IL
Built 2015 Load: 49.2 t ADT: 141,300
TR 24 (250E)
GoodOver: BEAR CREEK
1.6 MI S. GARRETT, Douglas, IL
Built 2023 Load: 49.2 t ADT: 375
TR-537
GoodOver: HURRICANE CREEK
2.5 MI W PITTSBURG, Fayette, IL
Built 1978 Load: 49.2 t ADT: 100
TR-51 Kinsman Rd
GoodOver: Armstrong Run
.69 S Dupont Road, Grundy, IL
Built 2014 Load: 49.2 t ADT: 125
US 136
GoodOver: HAMILTON SLOUGH
.1M E KEOKUK BRIDGE, Hancock, IL
Built 1954 Load: 49.2 t ADT: 10,500
MAKANDA ROAD
GoodOver: DRURY CREEK
IN MAKANDA, Jackson, IL
Built 1985 Load: 49.2 t ADT: 500
US 52
GoodOver: TOMAHAWK CREEK
5.84 MI E ILL 251, LaSalle, IL
Built 1997 Load: 49.2 t ADT: 1,500
CH 6 FAS 345
GoodOver: W FORK MAZON RIVER
1.7 MI N OF ODELL, Livingston, IL
Built 1999 Load: 49.2 t ADT: 225
IL 203
GoodOver: NSRR, UPRR, Access Rd
2.4mi N of I-55/70, Madison, IL
Built 1992 Load: 49.2 t ADT: 13,000
IL 255 NB & Ramp C
GoodOver: UPRR, KCSRR
0.25mi NW of Humbert Rd, Madison, IL
Built 2010 Load: 49.2 t ADT: 9,850
LAKE ARGYLE PARK
GoodOver: STREAM
LAKE ARGYLE ST PK, McDonough, IL
Built 2011 Load: 49.2 t ADT: 75
TR 517
GoodOver: W FORK SALT CR
3.5 MI SE DOWNS, McLean, IL
Built 2018 Load: 49.2 t ADT: 75
ADMIRAL TROST RD
GoodOver: WILSON CR. MSS 1296
CITY OF COLUMBIA, Monroe, IL
Built 2007 Load: 49.2 t ADT: 1,150
IL 127
GoodOver: BEARCAT CREEK
2.3 M N BOND COUNTY, Montgomery, IL
Built 2008 Load: 49.2 t ADT: 2,450
IL 78
GoodOver: FORK INDIAN CREEK
2.8 MI S CASS CO LIN, Morgan, IL
Built 2004 Load: 49.2 t ADT: 2,100
LUSK RD
GoodOver: STREAM
5.8 MI SSW OF HEROD, Pope, IL
Built 2019 Load: 49.2 t ADT: 75
SNELL RD (OLD IL 4
GoodOver: PANTHER CREEK
.3M W IL4, N AUBURN, Sangamon, IL
Built 2002 Load: 49.2 t ADT: 150
IL 177
GoodOver: LOOP CREEK
1 MI W. JCT W/158, St. Clair, IL
Built 2007 Load: 49.2 t ADT: 5,600
WINSLOW ROAD
GoodOver: HONEY CREEK
1 MI E. WINSLOW, Stephenson, IL
Built 2003 Load: 49.2 t ADT: 1,200
US 45
GoodOver: BEAR CREEK
2 MI S IL 1/US 45, White, IL
Built 2023 Load: 49.2 t ADT: 2,600
BLAINE RD
GoodOver: BEAVER CREEK
3.0 MI NW CAPRON, Boone, IL
Built 2018 Load: 49.6 t ADT: 50
US 6/34
GoodOver: WEST BUREAU CREEK
AT EAST EDGE WYANET, Bureau, IL
Built 2000 Load: 49.6 t ADT: 3,450
TR 196 (End Rd)
GoodOver: Prairie Branch
1.5 NW Kaskaskia JC, Clinton, IL
Built 2023 Load: 49.6 t ADT: 25
IL 54 (FAP 71)
GoodOver: SALT CREEK
3 MI NE FARMER CITY, De Witt, IL
Built 2010 Load: 49.6 t ADT: 1,150
FAS 2801 (IL 128)
GoodOver: BIG MOCCASIN CREEK
4.25 MI S. IL 33, Effingham, IL
Built 2023 Load: 49.6 t ADT: 1,150
TR 242A
GoodOver: TRIB OF SALT CREEK
1 MI SE OF EFFINGHAM, Effingham, IL
Built 2010 Load: 49.6 t ADT: 225
ILL 115 FAP 796
GoodOver: DRAINAGE DITCH
4.52 MI S OF IL 116, Ford, IL
Built 2011 Load: 49.6 t ADT: 675
I-80 WB Exit Ramp
GoodOver: COLLINS RUN
NE QUAD I-80/BRISBIN, Grundy, IL
Built 2011 Load: 49.6 t ADT: 1,350
IL 47 FAP 326
GoodOver: VALLEY RUN Creek
3.5 MI N OF I-80 Intechng, Grundy, IL
Built 2016 Load: 49.6 t ADT: 6,900
FAS 230 CH 28
GoodOver: WALKER CREEK
6 MI NW KEWANEE, Henry, IL
Built 1977 Load: 49.6 t ADT: 175
I-57 SB
GoodOver: NORFOLK SOUTHERN RAILWAY
0.25 MI N DIX INTERCHANGE, Jefferson, IL
Built 2022 Load: 49.6 t ADT: 12,500
N OKLAHOMA LA
GoodOver: ROCKY BRANCH
0.3MI N OF E DUNER, Jefferson, IL
Built 2018 Load: 49.6 t ADT: 50
T.R. 99VAN DYKE RO
GoodOver: West Aux Sable Creek
75 FT E of VanDyke R, Kendall, IL
Built 2020 Load: 49.6 t ADT: 50
Showing 24,701-24,750 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 |