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
FAU 9701 (OLD IL 1
GoodOver: MUDD CREEK
2 MI E IL 127, Jackson, IL
Built 2003 Load: 52.8 t ADT: 3,800
DUNHAM ROAD/CHA-29
GoodOver: N BR KISHWAUKEE RIV
1.2 MI W OF US 14, McHenry, IL
Built 2011 Load: 52.8 t ADT: 250
TR 7A
GoodOver: DITCH
.25MI E MOWEAQUA, Shelby, IL
Built 2002 Load: 52.8 t ADT: 75
FAP 885-IL 127/146
GoodOver: GREEN CREEK
0.3 MI E IL 127, Union, IL
Built 2002 Load: 52.8 t ADT: 5,000
I-88
GoodOver: DITCH
2.5 MI W ERIE, Whiteside, IL
Built 1975 Load: 52.8 t ADT: 12,500
FAS 2887-IL 37
GoodOver: LAKE CREEK
0.4 M S JHNSTON CITY, Williamson, IL
Built 2000 Load: 52.8 t ADT: 8,000
I-70 WB
GoodOver: CSXRR
5.9 MI E POCAHONTAS, Bond, IL
Built 1967 Load: 53.1 t ADT: 12,050
IL 96
GoodOver: FOX CREEK
5 M W KAMPSVILLE, Calhoun, IL
Built 2009 Load: 53.1 t ADT: 400
US 52 & IL 64
GoodOver: BR. SREADDLE CREEK
2.5 MI. W. LANARK, Carroll, IL
Built 1996 Load: 53.1 t ADT: 2,950
US 6 IL 7 159TH S
GoodOver: SPRING CREEK
0.5 M W of Wolf Rd, Cook, IL
Built 2015 Load: 53.1 t ADT: 18,700
TR 163
GoodOver: MINNOW SLOUGH
1.5 MI NE PALESTINE, Crawford, IL
Built 2021 Load: 53.1 t ADT: 20
US 30
GoodOver: WABAUNSEE CR
0.5 M W US 34, Kane, IL
Built 2015 Load: 53.1 t ADT: 27,600
US 34 FAP 587
GoodOver: SUTPHENS RUN
8.3 MI E OF I-39, LaSalle, IL
Built 2023 Load: 53.1 t ADT: 1,600
US 50
GoodOver: DUMS CREEK
3 MI W CLAY CO LN, Marion, IL
Built 2006 Load: 53.1 t ADT: 2,550
US 54 / IL 107
GoodOver: BAY CREEK
1.5M N IL 106-PTSFLD, Pike, IL
Built 1989 Load: 53.1 t ADT: 5,300
ILL 100
GoodOver: BEE CREEK
.4MI N PIKE CO LINE, Pike, IL
Built 1991 Load: 53.1 t ADT: 300
FAI 72 RAMP B
GoodOver: DRAINAGE DITCH
I-72 & IL 100 INT, Scott, IL
Built 1981 Load: 53.1 t ADT: 250
EAST LAMM ROAD
GoodOver: BR OF SUMNER CREEK
3.5 MINE GERMAN VAL, Stephenson, IL
Built 1976 Load: 53.1 t ADT: 50
LARAWAY ROAD
GoodOver: EAST BRCH HICKORY CK
.45M W HARLEM, Will, IL
Built 1973 Load: 53.1 t ADT: 8,500
IL 89 FAP 698
GoodOver: PIKE CREEK
0.50 MI S JCT US 34, Bureau, IL
Built 2011 Load: 53.5 t ADT: 1,100
IL 40
GoodOver: ELKHORN CREEK TRIB.
1.5 MI S MILLEDGEVIL, Carroll, IL
Built 1993 Load: 53.5 t ADT: 3,250
ELMHURST RD
GoodOver: HIGGINS CREEK
.08M S of Oaktom, Cook, IL
Built 2016 Load: 53.5 t ADT: 26,800
47TH ST
GoodOver: DES PLAINES RIVER
0.5 M W IL 43, Cook, IL
Built 2002 Load: 53.5 t ADT: 5,600
DIXIE HWY
GoodOver: BUTTERFIELD CREEK
0.7 M S OF 187TH ST, Cook, IL
Built 2010 Load: 53.5 t ADT: 8,450
PALATINE RD
GoodOver: MCDONALD CREEK
0.3 M WEST OF IL 83, Cook, IL
Built 2010 Load: 53.5 t ADT: 32,700
TR-434
GoodOver: Hog Creek
2.5 Mi. NW Wrights C, Fayette, IL
Built 2018 Load: 53.5 t ADT: 50
LEAMINGTON ROAD
GoodOver: ROBINETTE CREEK
0.8 MI E LEAMINGTON, Gallatin, IL
Built 2019 Load: 53.5 t ADT: 75
IL 108
GoodOver: WEST TAYLOR CREEK BR
8.5 M E CARROLTON, Greene, IL
Built 2009 Load: 53.5 t ADT: 1,000
Mc Donald Road
GoodOver: Otter Creek
0.3 m W of Randall, Kane, IL
Built 2017 Load: 53.5 t ADT: 8,850
IL 23/US 52
GoodOver: CROOKED LEG CREEK
0.27M E of IL23/US52, LaSalle, IL
Built 2010 Load: 53.5 t ADT: 2,300
I-88 EB
GoodOver: 3 MILE BRANCH
2.3 MI W ILL 26, Lee, IL
Built 1974 Load: 53.5 t ADT: 7,850
ILL 116 FAP 681
GoodOver: SMITH BRANCH
1.9 E JCT 116 & 23, Livingston, IL
Built 2013 Load: 53.5 t ADT: 2,750
IL 143
GoodOver: SILVER CREEK
3 MILES WEST OF IL 4, Madison, IL
Built 2007 Load: 53.5 t ADT: 4,650
US 51 SB (FAP 322)
GoodOver: FULTON CREEK
CENTRALIA, Marion, IL
Built 1960 Load: 53.5 t ADT: 2,450
FAS 642(CH 3)
GoodOver: ROBINSON CREEK TRIB
1.75 MI W OF FINDLAY, Shelby, IL
Built 1989 Load: 53.5 t ADT: 1,900
TR 312
GoodOver: Stream
3.6 Mi. W of Strasbu, Shelby, IL
Built 2018 Load: 53.5 t ADT: 50
Simmons Rd FAU 917
GoodOver: Ogle Ck
0.4 Mi N of Kyle Rd, St. Clair, IL
Built 2023 Load: 53.5 t ADT: 1,400
TR98 (MILLARD RD)
GoodOver: SPRING BROOK
4.5 MI E FULTON, Whiteside, IL
Built 2020 Load: 53.5 t ADT: 100
IL 7
GoodOver: I & M CANAL
0.2 M W OF IL 171, Will, IL
Built 1951 Load: 53.5 t ADT: 24,400
LYFORD RD
GoodOver: KEITH CREEK
E. EDGE OF ROCKFORD, Winnebago, IL
Built 2017 Load: 53.5 t ADT: 2,750
PARK ACCESS RD
GoodOver: ROCK CUT SPILLWAY
ROCK CUT ST PARK, Winnebago, IL
Built 2019 Load: 53.5 t ADT: 775
IL 53 (ROHLWING R
GoodOver: STREAM
0.2 M S OF IL 390, DuPage, IL
Built 2014 Load: 53.8 t ADT: 17,500
IL 54
GoodOver: Drainage Ditch
2.23 M N of IL 9, Ford, IL
Built 2016 Load: 53.8 t ADT: 2,200
FAS 1600 (CH 12)
GoodOver: Mallard Creek
5 mi S Warsaw, Hancock, IL
Built 2023 Load: 53.8 t ADT: 375
IL 3-FAP 312
GoodOver: AUSTIN CREEK
NEAR IL13&151 INTSCT, Jackson, IL
Built 2001 Load: 53.8 t ADT: 2,150
I-90
GoodOver: S BR KISHWAUKEE RIV
1 MI E IL 47, Kane, IL
Built 2014 Load: 53.8 t ADT: 73,600
OLD US 34 SBI 18
GoodOver: INDIAN CREEK
IN EARLVILLE, LaSalle, IL
Built 1996 Load: 53.8 t ADT: 1,400
ILL 108
GoodOver: SHAW POINT CREEK
5.6MI W JCT I-55, Macoupin, IL
Built 1999 Load: 53.8 t ADT: 1,600
IL 157 (FAS 766)
GoodOver: MOONEY CREEK
0.8 MI NO. OF EVILLE, Madison, IL
Built 1999 Load: 53.8 t ADT: 4,600
OAK GROVE ROAD
GoodOver: DRAINAGE DITCH
.7 MI SW US 14, McHenry, IL
Built 2018 Load: 53.8 t ADT: 775
Showing 24,951-25,000 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 |