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
ILL 97
GoodOver: HAW CREEK TRIB.
6.5 MI NW OF MAQUON, Knox, IL
Built 2016 Load: 50.2 t ADT: 2,100
FAS-1860 (ILL-250)
GoodOver: STREAM
3.5 MI E SUMNER, Lawrence, IL
Built 1997 Load: 50.2 t ADT: 2,050
IL 138
GoodOver: CAHOKIA CREEK
0.1 MI W WILSONVILLE, Macoupin, IL
Built 2002 Load: 50.2 t ADT: 1,000
IL 108
GoodOver: MACOUPIN CREEK
1.8 M E JCT OF IL 4, Macoupin, IL
Built 2009 Load: 50.2 t ADT: 2,000
WALDO CHURCH ROAD
GoodOver: TRIB TO FOUR MILE CREEK
1.5 MI NE METROPOLIS, Massac, IL
Built 2023 Load: 50.2 t ADT: 125
IL 31 SB ENT RAMP
GoodOver: CRYSTAL CREEK
0.1 M S Algonquin Rd, McHenry, IL
Built 2013 Load: 50.2 t ADT: 1,500
Main Street
GoodOver: Crystal Lake Overflo
200 ft S of IL 62, McHenry, IL
Built 2020 Load: 50.2 t ADT: 5,750
WATER ROAD TR 49
GoodOver: MILL CREEK
5 MI NE LEAF RIVER, Ogle, IL
Built 2020 Load: 50.2 t ADT: 25
TR 118 (265th Av)
GoodOver: Horton Creek
1.34 mi N of IL 96, Pike, IL
Built 2023 Load: 50.2 t ADT: 25
FAS 1645 (IL 123)
GoodOver: Ditch
0.30 mi E IL 29, Sangamon, IL
Built 2021 Load: 50.2 t ADT: 2,450
ILL 106
GoodOver: LITTLE SANDY CREEK
2.0 MI S ALSEY, Scott, IL
Built 2001 Load: 50.2 t ADT: 1,150
IL 15 WB
GoodOver: ICRR
1.3 mi E of IL 159, St. Clair, IL
Built 2015 Load: 50.2 t ADT: 12,500
US 136(FAP 711)
GoodOver: BEAN CREEK
1 MILE E OF POTOMAC, Vermilion, IL
Built 2005 Load: 50.2 t ADT: 1,450
FAP 823 (IL 15)
GoodOver: STREAM
3.5 MI W EDWARDS CL, Wayne, IL
Built 2012 Load: 50.2 t ADT: 2,750
Steger Road
GoodOver: Jackson Creek
0.6 Mi. W. of US 45, Will, IL
Built 2017 Load: 50.2 t ADT: 4,250
TR 255
GoodOver: Frazier Creek
2.5 MI N of Quincy, Adams, IL
Built 2021 Load: 50.5 t ADT: 100
TR 366 (E 2200th S
GoodOver: Br. of McCraney Crk
1.3 mi S IL 104, Adams, IL
Built 2021 Load: 50.5 t ADT: 150
I-90
GoodOver: STREAM
3.8 MI E WINN CO LN, Boone, IL
Built 1958 Load: 50.5 t ADT: 24,800
US 51(NB)
GoodOver: MAIN DRAIN DITCH
3.2MI S ASSUMPTION, Christian, IL
Built 2015 Load: 50.5 t ADT: 3,600
TR 302
GoodOver: Beck's Creek
0.65 mi S IL 16, Christian, IL
Built 2022 Load: 50.5 t ADT: 450
CHERRY ST
GoodOver: UNION PACIFIC RR
CHERRY OV UNION P.RR, Cook, IL
Built 1940 Load: 50.5 t ADT: 800
TR 193
GoodOver: Dogwood Creek
2 MI SE OBLONG, Crawford, IL
Built 2019 Load: 50.5 t ADT: 75
TR 508A
GoodOver: TRIB HICKORY CREEK
3 MI S ST ELMO, Fayette, IL
Built 2018 Load: 50.5 t ADT: 35
FAP 869-IL 34
GoodOver: CNIC RR
ECL THOMPSONVILLE, Franklin, IL
Built 2004 Load: 50.5 t ADT: 2,100
OR 66 NBL
GoodOver: BREWSTER RUN
0.3 M N ILL 47, Grundy, IL
Built 2000 Load: 50.5 t ADT: 825
T.R. 27
GoodOver: Macoupin Cr. Trib.
4.5 mi NW of Fieldon, Jersey, IL
Built 2023 Load: 50.5 t ADT: 50
IL 25
GoodOver: E BR BREWSTER CREEK
0.1 MI N. STEARNS RD, Kane, IL
Built 2009 Load: 50.5 t ADT: 14,900
STEARNS ROAD
GoodOver: MULTIUSE PATH
0.1MI E DUNHAM RD., Kane, IL
Built 2010 Load: 50.5 t ADT: 17,600
IL 16
GoodOver: COOP BRANCH
1 M E SHIPMAN, Macoupin, IL
Built 2013 Load: 50.5 t ADT: 1,800
US 67 NB
GoodOver: MAUVAISE CR
2.5M E CHAPIN, Morgan, IL
Built 2005 Load: 50.5 t ADT: 6,450
SWORDS AVE
GoodOver: DRY RUN CREEK
SW1/4 6 PEORIA TWP, Peoria, IL
Built 1984 Load: 50.5 t ADT: 4,150
IL 92
GoodOver: CREEK
.07MI E OF 121ST W, Rock Island, IL
Built 2010 Load: 50.5 t ADT: 2,650
TR 217
GoodOver: Horney Branch
1.5 mi W Rushville, Schuyler, IL
Built 2023 Load: 50.5 t ADT: 50
CH 12
GoodOver: Mauvaise Terre Creek
1.5 mi E of Exeter, Scott, IL
Built 2023 Load: 50.5 t ADT: 75
IL 156
GoodOver: RICHLAND CREEK
1.2 MI E. JCT 159, St. Clair, IL
Built 2007 Load: 50.5 t ADT: 2,750
FAP-877 (ILL-141)
GoodOver: STREAM
2 MI W NEW HAVEN, White, IL
Built 2019 Load: 50.5 t ADT: 2,550
IL 96 FAP 506
GoodOver: RAILROAD CR
.4 M S HAMILTON, Hancock, IL
Built 2011 Load: 50.9 t ADT: 2,600
IL 47
GoodOver: EAKIN CR
1.4 M S of I-90, Kane, IL
Built 2017 Load: 50.9 t ADT: 16,200
TR 3
GoodOver: Birch Creek
2 Mi NW Birds, Lawrence, IL
Built 2020 Load: 50.9 t ADT: 75
FAS 777 NEW DOUGLA
GoodOver: TRIB. TO SILVER CRK
.6 MI EAST OF I-55, Madison, IL
Built 2002 Load: 50.9 t ADT: 1,700
LAWRENCE ROAD/CH-T
GoodOver: LAWRENCE CREEK
.3MI NW OAK GROVE RD, McHenry, IL
Built 2011 Load: 50.9 t ADT: 400
IL 163
GoodOver: S PRAIRIE duPONT CK
2MI N OF MILSTADT, St. Clair, IL
Built 2006 Load: 50.9 t ADT: 3,500
BLACK RD
GoodOver: ROCK CREEK
5 SW OF MORRISON, Whiteside, IL
Built 2018 Load: 50.9 t ADT: 725
FAS 1901
GoodOver: LITTLE GRASSY CREEK
4 MI S OF CARTERVILL, Williamson, IL
Built 1976 Load: 50.9 t ADT: 850
S. CENTRAL AVENUE
GoodOver: S. BR. OF KENT CREEK
0.06 MI S OF PRESTON, Winnebago, IL
Built 1975 Load: 50.9 t ADT: 3,400
FAP 714 (IL 48)
GoodOver: Bear Creek
1 mi SW Palmer, Christian, IL
Built 2014 Load: 51.2 t ADT: 2,750
I-290 WB
GoodOver: SALT CREEK
0.6 M NW OF IL 83, DuPage, IL
Built 2018 Load: 51.2 t ADT: 69,300
Hillview Eldred Rd
GoodOver: APPLE CR. OVERFLOW
4.6MI S OF HILLVIEW, Greene, IL
Built 1999 Load: 51.2 t ADT: 300
IL 1/FAP 332A
GoodOver: COON CREEK
5.35 M S OF US 24, Iroquois, IL
Built 2022 Load: 51.2 t ADT: 2,450
US 45
GoodOver: DUTCHMAN CREEK
2.5 MI S VIENNA, Johnson, IL
Built 2005 Load: 51.2 t ADT: 2,000
Showing 24,801-24,850 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 |