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 96
GoodOver: Kampsville CREEK
AT KAMPSVILLE, Calhoun, IL
Built 1948 Load: 45.7 t ADT: 850
TR 7
GoodOver: Jobs Creek
3 MI W CHANDLERVILLE, Cass, IL
Built 2024 Load: 45.7 t ADT: 50
US 50
GoodOver: E Trib Prairie Br
6.5 MI E OF CARLYLE, Clinton, IL
Built 2012 Load: 45.7 t ADT: 4,250
US 6 IL 7 159TH S
GoodOver: MARLEY CREEK
1.0 M W US 45, Cook, IL
Built 2015 Load: 45.7 t ADT: 21,300
IL 83 (CAL SAG RD
GoodOver: CREEK W OF 104TH AVE
1.4 M W US 45, Cook, IL
Built 1999 Load: 45.7 t ADT: 7,750
IL 56
GoodOver: W BR DUPAGE RIVER
1.3 M NE IL 59, DuPage, IL
Built 2012 Load: 45.7 t ADT: 16,400
TR 41
GoodOver: SECOND SALT CREEK
2 MI N TEUTOPOLIS, Effingham, IL
Built 2006 Load: 45.7 t ADT: 100
TR 416
GoodOver: Little Hickory CK Tr
2.25 mi. W Loogootee, Fayette, IL
Built 2016 Load: 45.7 t ADT: 50
TR 371
GoodOver: HURRICANE CK
4.5 MI W VANDALIA, Fayette, IL
Built 2020 Load: 45.7 t ADT: 100
US 136 EB
GoodOver: LAMOINE RIVER
6.8M E IL94,CARTHAGE, Hancock, IL
Built 1991 Load: 45.7 t ADT: 3,700
TR 71
GoodOver: Lamoine River
0.81 mi E TR 236, Hancock, IL
Built 2023 Load: 45.7 t ADT: 25
IL 1
GoodOver: IROQUOIS RIVER
1.0 MI N of US 24, Iroquois, IL
Built 2015 Load: 45.7 t ADT: 2,600
I-57 NB
GoodOver: NORFOLK & SOUTHERN RR
0.25 N OF DIX INT, Jefferson, IL
Built 2023 Load: 45.7 t ADT: 12,500
IL 84
GoodOver: DUKE CREEK
N EDGE HANOVER, Jo Daviess, IL
Built 2010 Load: 45.7 t ADT: 1,700
ILL 146
GoodOver: BUCK RUN CREEK
1.2 MI E UNION CO, Johnson, IL
Built 2008 Load: 45.7 t ADT: 2,250
I-57 SB
GoodOver: Kankakee River
2.9 M N. of US 45/52, Kankakee, IL
Built 2015 Load: 45.7 t ADT: 11,650
IL 102
GoodOver: Rock Creek
6.5 M NW of US 45/52, Kankakee, IL
Built 2016 Load: 45.7 t ADT: 4,800
I-80 WB
GoodOver: LITTLE VERMILLION RV
2.1MI E IL251 JCT, LaSalle, IL
Built 1996 Load: 45.7 t ADT: 14,200
IL 170 FAP 786
GoodOver: Waupecan Creek
8.43 mi S of US 6, LaSalle, IL
Built 2014 Load: 45.7 t ADT: 1,200
TR 52
GoodOver: The Slough
3 Mi. ESE Chauncey, Lawrence, IL
Built 2016 Load: 45.7 t ADT: 25
ILL 47/FAP 326
GoodOver: DRAINAGE DITCH
1 MI N OF ILL 116, Livingston, IL
Built 1997 Load: 45.7 t ADT: 2,150
CH 30 Kell Road
GoodOver: Horse Creek
3.75 Mi E of Kell, Marion, IL
Built 2017 Load: 45.7 t ADT: 225
ILL 251
GoodOver: SANDY CREEK
1.85 MI S OF ILL 18, Marshall, IL
Built 2009 Load: 45.7 t ADT: 700
US 45-FAS 961
GoodOver: DAVIS BAYOU
BROOKPORT, Massac, IL
Built 1994 Load: 45.7 t ADT: 4,050
HICKORY HILL RD
GoodOver: TRIB TO GURLEY DITCH
.25MI N OF TR 45, Massac, IL
Built 2006 Load: 45.7 t ADT: 25
HILL ROAD
GoodOver: N BR NIPPERSINK CRK
0.35 MI E / US 12, McHenry, IL
Built 2014 Load: 45.7 t ADT: 750
CH 27
GoodOver: LITTLE KICKAPOO CR
0.5 MILE S DOWNS, McLean, IL
Built 1980 Load: 45.7 t ADT: 300
FAS 349 CH 13
GoodOver: BRANCH ROOKS CR
2690 N, 3350 E, McLean, IL
Built 2008 Load: 45.7 t ADT: 675
IL 3
GoodOver: UPRR
0.29 MI S EVANSVILLE, Randolph, IL
Built 1971 Load: 45.7 t ADT: 5,650
SANGAMON AV. (WB)
GoodOver: ILLINOIS CENTRAL RR
.25M W I-55, Sangamon, IL
Built 2003 Load: 45.7 t ADT: 16,700
TR 235
GoodOver: Jordan Creek
3.4 MI SE Shelbyvill, Shelby, IL
Built 2022 Load: 45.7 t ADT: 150
Rel. IL 3 (Packers
GoodOver: KCSRR, Water St, UPRR
0.6 mi W. of I-70, St. Clair, IL
Built 2016 Load: 45.7 t ADT: 2,350
FAS 331(CH 10)
GoodOver: FOUNTAIN CREEK
.3 MI NE LYNN, Vermilion, IL
Built 2012 Load: 45.7 t ADT: 250
Hamilton Co TR 3
GoodOver: Drainage Ditch
2 Mi. N Belle Prairi, Wayne, IL
Built 2021 Load: 45.7 t ADT: 25
S. Kings Road
GoodOver: Deer Creek
3300 N of Exchange, Will, IL
Built 2022 Load: 45.7 t
FOREST HILL ROAD
GoodOver: WILLOW CREEK
1.6 M S ILL 173, Winnebago, IL
Built 1981 Load: 45.7 t ADT: 11,300
IL 96
GoodOver: BRANCH BEAR CREEK
.4M S MARCELLINE, Adams, IL
Built 1994 Load: 46.0 t ADT: 2,600
US 6
GoodOver: BRUSH CREEK
W OF DEPUE SPUR, Bureau, IL
Built 2007 Load: 46.0 t ADT: 2,450
FAP 808 (IL 130)
GoodOver: E BRNCH EMBARRAS RIV
3.5 MI S OF PHILO, Champaign, IL
Built 2012 Load: 46.0 t ADT: 3,200
TR 66A
GoodOver: unnamed stream
4.3 Mi. NE of Casey, Clark, IL
Built 2019 Load: 46.0 t ADT: 75
TR 331
GoodOver: Raccoon Creek
4 Mi. W Flora, Clay, IL
Built 2019 Load: 46.0 t ADT: 100
US 50
GoodOver: LOST CREEK
9.6 MI EA OF CARLYLE, Clinton, IL
Built 1997 Load: 46.0 t ADT: 3,900
TR 119A
GoodOver: Trib to Riley Creek
4 Miles SW of Humboldt, Coles, IL
Built 2023 Load: 46.0 t ADT: 50
IL 171 (ARCHER AVE
GoodOver: RR - IHB
AT 60TH PL, Cook, IL
Built 1995 Load: 46.0 t ADT: 28,400
I-94 (EB)
GoodOver: E Fork Chicago River
1 Mi W of US 41, Cook, IL
Built 2019 Load: 46.0 t ADT: 27,400
FAP 323(US 36)
GoodOver: DRY FORK
JUST E OF GARRETT, Douglas, IL
Built 1927 Load: 46.0 t ADT: 3,550
TR 41
GoodOver: DRY FORK
1.4 MI NE OF GARRETT, Douglas, IL
Built 2020 Load: 46.0 t ADT: 50
FAS 2796 (US-40)
GoodOver: COON CREEK
.75 MI E ALTAMONT, Effingham, IL
Built 1989 Load: 46.0 t ADT: 4,350
FAS 708 CH 12- 200
GoodOver: LITTLE MUDDY CREEK
1 MI. W WINTERROWD, Effingham, IL
Built 2019 Load: 46.0 t ADT: 150
HILLSIDE RD - TR 4
GoodOver: STREAM
N1/2-28-T5NR3E, Fulton, IL
Built 2021 Load: 46.0 t ADT: 50
Showing 24,301-24,350 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 |