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
MS-4410 StruckmanB
Structurally DeficientOver: W Br DuPage River
.1 MI E. BARTLETT RD, DuPage, IL
Built 1992 Load: 38.6 t ADT: 1,650
FAP-327/FR-1699
Structurally DeficientOver: ALLISON DITCH NO 1
2 MI E AIRPORT INT, Lawrence, IL
Built 1957 Load: 38.9 t ADT: 20
TR-548
Structurally DeficientOver: POND CREEK DR DITCH
3 MI SW GOLDEN GATE, Wayne, IL
Built 1995 Load: 38.9 t ADT: 50
KINSMAN ROAD
Structurally DeficientOver: WAUPECON CREEK
0.1 MI N BURKHART RD, Grundy, IL
Built 1948 Load: 39.2 t ADT: 300
I-72 (EB)
Structurally DeficientOver: Norfolk Southern Railway
N OF MONTICELLO, Piatt, IL
Built 1975 Load: 39.2 t ADT: 5,450
I-72 (WB)
Structurally DeficientOver: Norfolk Southern Railway
N OF MONTICELLO, Piatt, IL
Built 1975 Load: 39.2 t ADT: 5,450
IL 8/ IL 116
Structurally DeficientOver: Tazewell & Peoria RR
CEDAR ST EXTENSION, Tazewell, IL
Built 1966 Load: 39.2 t ADT: 11,800
FAS-355 (CH-16)
Structurally DeficientOver: Prairie Creek
2855N, 300E, Livingston, IL
Built 1993 Load: 39.5 t ADT: 575
ILL 9
Structurally DeficientOver: DROWNING FORK
2 MI W OF ILL 41, McDonough, IL
Built 1960 Load: 39.9 t ADT: 1,850
TR 56
Structurally DeficientOver: TEN MILE CREEK
2.2 MI NE OF KENNY, De Witt, IL
Built 1986 Load: 40.8 t ADT: 75
FAP-821 (ILL-15)
Structurally DeficientOver: BIG MUDDY OVERFLOW
9 MI E WASH CO LN, Jefferson, IL
Built 1923 Load: 40.8 t ADT: 5,350
ILL 122
Structurally DeficientOver: IL CENTRAL RR SPUR
IN DELAVAN, Tazewell, IL
Built 1975 Load: 41.8 t ADT: 1,750
IL-13 EB
Structurally DeficientOver: Big Muddy River
Murphysboro, Jackson, IL
Built 2014 Load: 42.1 t ADT: 16,600
IL 1 (HALSTED ST
Structurally DeficientOver: RR- CSXT
1.5 M N IL 83, Cook, IL
Built 1935 Load: 42.4 t ADT: 13,700
RANDOLPH ST
Structurally DeficientOver: S.BR.CHICAGO RIVER
375 W & 150 N, Cook, IL
Built 1903 Load: 42.4 t ADT: 6,100
IL 111
Structurally DeficientOver: CSXRR (UPRR, KCSRR)
N Edge of Washington Park, St. Clair, IL
Built 1935 Load: 42.4 t ADT: 2,750
FAU-1552 GRMN CH R
Structurally DeficientOver: FLAG CREEK
0.03 M W WOLF P10, Cook, IL
Built 1963 Load: 42.8 t ADT: 5,350
OAKWOOD DRIVE
Structurally DeficientOver: BOONE CREEK
.5 M S 1201 M W 31, McHenry, IL
Built 1971 Load: 42.8 t ADT: 1,150
CO HWY 6
Structurally DeficientOver: HENDERSON CREEK
NW-24-T13NR2W, Mercer, IL
Built 1975 Load: 43.4 t ADT: 50
ILL 147-FAS 932
Structurally DeficientOver: CNIC RR
0.7 MI E JOHNSON CO, Pope, IL
Built 1941 Load: 43.4 t ADT: 400
130TH ST
Structurally DeficientOver: RR - CSSS & IHB
0.05 M W I-94, Cook, IL
Built 1953 Load: 44.1 t ADT: 18,500
TR 187
Structurally DeficientOver: LICK CR
3.0 MI SE HETTICK, Macoupin, IL
Built 1974 Load: 44.7 t ADT: 50
ILL 116
Structurally DeficientOver: CEDAR CREEK
APPR 2M W IL 41, Knox, IL
Built 1975 Load: 45.4 t ADT: 1,100
THORNTON ROAD
Structurally DeficientOver: MIDLOTHIAN CREEK
0.37 E DIXIE HY P24, Cook, IL
Built 1948 Load: 46.0 t ADT: 850
CHICAGO AV & HALST
Structurally DeficientOver: UPRR and Parking Lot
800 N. & 800 W., Cook, IL
Built 1968 Load: 46.3 t ADT: 19,900
FAS 1425
Structurally DeficientOver: BIG MEADOW DITCH
1.0 MI N OF BASCO, Hancock, IL
Built 1961 Load: 46.7 t ADT: 325
FAS 1463 - CH 12
Structurally DeficientOver: S BRANCH OTTER CREEK
SE-2-T3NR1E, Fulton, IL
Built 1988 Load: 48.0 t ADT: 100
I- 94 NB 2 OLD ORC
Structurally DeficientOver: GROUND
EDENS & OLD ORCH, Cook, IL
Built 1982 Load: 49.2 t ADT: 8,300
IL 157 / IL 162
Structurally DeficientOver: JUDY'S BRANCH CREEK
JCT 157-162, Madison, IL
Built 1933 Load: 49.6 t ADT: 10,600
TR 52
Structurally DeficientOver: BRUSH CREEK
NW-13-T10NR1E, Knox, IL
Built 1973 Load: 53.5 t ADT: 100
INDIAN BOUNDRY
Structurally DeficientOver: SPRING HOLE CR
1.6M W OF IL59, Will, IL
Built 1980 Load: 54.1 t ADT: 2,200
KIRCHOFF RD
Structurally DeficientOver: SALT CREEK
0.4M SE IL 53, Cook, IL
Built 1996 Load: 56.1 t ADT: 10,400
TR 573
Structurally DeficientOver: SOUTH FORK SALINE R.
4 MI SE OF MARION, Williamson, IL
Built 1977 Load: 57.0 t ADT: 175
TR-271
Structurally DeficientOver: LITTLE MUDDY CREEK
1.7 MI N CLAY CITY, Clay, IL
Built 1979 Load: 57.3 t ADT: 50
TR 406
Structurally DeficientOver: GUN CREEK
1.5 MI SE SPRING GAR, Jefferson, IL
Built 1999 Load: 58.0 t ADT: 100
IL 7
Structurally DeficientOver: RR - EJ&E
0.04 M E OF IL 53, Will, IL
Built 1990 Load: 63.2 t ADT: 24,400
TR 194/LONGHI ROAD
Structurally DeficientOver: TRIB TO CANTEEN CK
2.5 MI SW OF TROY, Madison, IL
Built 1984 Load: 88.8 t ADT: 75
MS-1980 Willow Crk
Structurally DeficientOver: Trib to Dunlap Lake
0.03 MI E GERBER RD, Madison, IL
Built 1991 Load: 88.8 t ADT: 525
CH D41
Structurally DeficientOver: NIXON RUN
NW1/4-29-ROSEFIELD, Peoria, IL
Built 1993 Load: 88.8 t ADT: 275
CH 5
Structurally DeficientOver: DITCH
1.75 MI E WEST UNION, Clark, IL
Built 1949 Load: 89.1 t ADT: 150
STONEBROOKE DR
Structurally DeficientOver: TRIB TO DUNLAP LAKE
0.16 MI N GERBER RD, Madison, IL
Built 1997 Load: 89.1 t ADT: 250
TR 34 (TH-S14)
Structurally DeficientOver: CREEK
T12N-R9E-4PM SEC 3, Marshall, IL
Built 1974 Load: 89.1 t ADT: 75
ILL 6
Structurally DeficientOver: STREAM
0.5 MI W OF ILL 40, Peoria, IL
Built 1982 Load: 89.1 t ADT: 15,500
Showing 27,701-27,743 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 |