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
I90 EB (NW TOLL)
FairOver: DES PLAINES RIV
0.7M E I294 P9, Cook, IL
Built 1958 Load: 33.0 t ADT: 91,500
AIRPORT RD
FairOver: E BR KISHWAUKEE RV
2300N 1510E, DeKalb, IL
Built 1964 Load: 33.0 t ADT: 1,950
CH-11 (FAS 666)
FairOver: KASKASKIA RIVER
2.95 MI W OF ARCOLA, Douglas, IL
Built 1961 Load: 33.0 t ADT: 1,450
TR 91 PATTON
FairOver: THE BIG FOUR
1320E 500N, Ford, IL
Built 1975 Load: 33.0 t ADT: 200
ILL 14
FairOver: STREAM E OF BENTON
4.1 MI E BENTON, Franklin, IL
Built 1924 Load: 33.0 t ADT: 1,850
IL 96
FairOver: TYSON CREEK
1.7M S IL 9, NIOTA, Hancock, IL
Built 1977 Load: 33.0 t ADT: 1,700
TR 258
FairOver: FLOUR CREEK
1.5 MI SE BOWEN, Hancock, IL
Built 1976 Load: 33.0 t ADT: 125
TR 408
FairOver: W. BR. INDIAN CREEK
4.0 MI S KEWANEE, Henry, IL
Built 1962 Load: 33.0 t ADT: 125
TR 2 D
FairOver: Sheldon Ditch #1
0.3 Mi S of US 24, Iroquois, IL
Built 1900 Load: 33.0 t ADT: 75
ILL 149
FairOver: KINKAID CREEK
0.9 M E OF ILL 3, Jackson, IL
Built 1986 Load: 33.0 t ADT: 2,100
FAP-116 (ILL-33/13
FairOver: EMBARRAS RIVER
NCL NEWTON, Jasper, IL
Built 1971 Load: 33.0 t ADT: 5,700
FAP-849 (ILL-142)
FairOver: CASEY FORK OVERFLOW
.7 MI S MT VERNON, Jefferson, IL
Built 1930 Load: 33.0 t ADT: 4,900
ILL 37
FairOver: BEAR BRANCH
0.45M N OF CYPRESS, Johnson, IL
Built 1933 Load: 33.0 t ADT: 1,350
SKYLINE DR
FairOver: TRIB OF MILL CREEK
0.2 MI N.MCKEE RD., Kane, IL
Built 1983 Load: 33.0 t ADT: 250
HUGHES ROAD
FairOver: BLACKBERRY CREEK
NE SEC16T 39NR7E, Kane, IL
Built 1998 Load: 33.0 t ADT: 3,300
TR 4B
FairOver: UNNAMED CREEK
MI NE REDDICK, Kankakee, IL
Built 1955 Load: 33.0 t ADT: 725
TR 165
FairOver: CRANE CREEK
0.5 MI SW BUCKINGHAM, Kankakee, IL
Built 1974 Load: 33.0 t ADT: 100
FAS-393(CH-4)
FairOver: Trib to Walnut Creek
W.CTR-17-T13N,R4E, Knox, IL
Built 1983 Load: 33.0 t ADT: 600
WAVERLY RD.
FairOver: RAVINE
1.7M.N.OF L.COOK RD., Lake, IL
Built 1987 Load: 33.0 t ADT: 75
TR 35 N 4592TH
FairOver: LITTLE INDIAN CR
N 4592 RD E 2190, LaSalle, IL
Built 1980 Load: 33.0 t ADT: 50
TR-10A
FairOver: THE SLOUGH
1.5 MI SW CHAUNCEY, Lawrence, IL
Built 1977 Load: 33.0 t ADT: 50
CENTER RD
FairOver: BUREAU CREEK
0.3 MI N BUREAU CO L, Lee, IL
Built 1972 Load: 33.0 t ADT: 25
ILL 17
FairOver: MAZON R
3.76 MI W OF ILL 47, Livingston, IL
Built 1971 Load: 33.0 t ADT: 1,800
CO HWY 13 FAS-356
FairOver: PIKE CREEK
3 MI N OF MEADOWS, Livingston, IL
Built 1956 Load: 33.0 t ADT: 175
CO HWY 14 FAS-1354
FairOver: TRIB VERMILLION R
2 MI SW STREATOR, Livingston, IL
Built 1960 Load: 33.0 t ADT: 550
US 51 NB (FAP 710)
FairOver: LAKE DECATUR
IN DECATUR, Macon, IL
Built 1962 Load: 33.0 t ADT: 22,400
TR 473
FairOver: E FK WOOD R
2 MI S 2 MI W BUNKER, Macoupin, IL
Built 1900 Load: 33.0 t ADT: 100
I-270 EASTBOUND
FairOver: JUDYS BR & MCT Trail
WEST OF IL 159, Madison, IL
Built 1996 Load: 33.0 t ADT: 19,250
I-270 WESTBOUND
FairOver: JUDYS BR & MCT trail
WEST OF IL 159, Madison, IL
Built 1996 Load: 33.0 t ADT: 19,250
TR 365
FairOver: SILVER LAKE FORK
2.5 MI SW ST JACOB, Madison, IL
Built 1976 Load: 33.0 t ADT: 150
I-57 NB
FairOver: CSXRR
.25 MI S SALEM INT, Marion, IL
Built 1969 Load: 33.0 t ADT: 9,650
I-57 SB
FairOver: CSXRR
.25 MI S SALEM INT, Marion, IL
Built 1968 Load: 33.0 t ADT: 9,650
CH 13 (CH-R60)
FairOver: CROW CREEK
T13N-R8E-4PM SEC 10, Marshall, IL
Built 1971 Load: 33.0 t ADT: 325
US 45
FairOver: Q DITCH
3 MI S OF MERMET, Massac, IL
Built 1959 Load: 33.0 t ADT: 1,950
TR 34
FairOver: S. BR CROOKED CREEK
W-17-T7NR4W, McDonough, IL
Built 1978 Load: 33.0 t ADT: 50
BAY VIEW LANE
FairOver: PISTAKEE LAKE
0.7 MI NW BAY RD, McHenry, IL
Built 2004 Load: 33.0 t ADT: 300
FAS 493 CH 5
FairOver: SANGAMON RIVER
0.5 MI S SAYBROOK, McLean, IL
Built 1937 Load: 33.0 t ADT: 675
CH-8 (FAS-473)
FairOver: MACKINAW RIVER
1.0 MI W CLARKSVILLE, McLean, IL
Built 1946 Load: 33.0 t ADT: 575
ILL 29
FairOver: GROVE CREEK
N EDGE GREENVIEW, Menard, IL
Built 1959 Load: 33.0 t ADT: 1,850
TR 105
FairOver: PARKER RUN
SW-27-T15NR1W, Mercer, IL
Built 1975 Load: 33.0 t ADT: 75
WB I-474
FairOver: KICKAPOO CR,TZPR RR, TP&
.25 MI S OF US 24, Peoria, IL
Built 1978 Load: 33.0 t ADT: 12,800
TR 145
FairOver: DRAINAGE DITCH
1.0 MI W IVESDALE, Piatt, IL
Built 1957 Load: 33.0 t ADT: 50
I-72 EB
FairOver: NAPOLEON HOLLOW DRAW
6.2M E IL 107 INTCHG, Pike, IL
Built 1989 Load: 33.0 t ADT: 4,950
ILL 37
FairOver: KITCHEL SLOUGH
1 MI S JOHNSON CO, Pulaski, IL
Built 1957 Load: 33.0 t ADT: 1,350
TR 131
FairOver: STREAM
1.7 MI NW WINDSOR, Shelby, IL
Built 2008 Load: 33.0 t ADT: 100
ILL 158
FairOver: LOOP CREEK
0.3 M N JCT ILL 177, St. Clair, IL
Built 1923 Load: 33.0 t ADT: 5,350
CH 3
FairOver: MILL CREEK
0.14M.E OF ILL 127, Union, IL
Built 1972 Load: 33.0 t ADT: 250
US 136(FAP 729)
FairOver: LICK CREEK
E EDGE OF DANVILLE, Vermilion, IL
Built 1970 Load: 33.0 t ADT: 7,300
FAP332(IL 1,US 150
FairOver: GRAPE CREEK
IN TILTON, Vermilion, IL
Built 1991 Load: 33.0 t ADT: 18,900
FAS 1405-CH 2
FairOver: MIDDLE HENDERSON CR
NW-2-T12NR1W, Warren, IL
Built 1939 Load: 33.0 t ADT: 100
Showing 10,301-10,350 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.