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
I-80 EB
FairOver: ABBOTT DITCH
3.44 E/HENRY CO LN, Bureau, IL
Built 1963 Load: 36.9 t ADT: 8,950
ARGO FAY ROAD
FairOver: JOHNSON CREEK
1.9 MI E OF ILL 84, Carroll, IL
Built 1987 Load: 36.9 t ADT: 2,350
CH 16(FAS 527)
FairOver: HACKETT BRANCH
.5 MI E OF PESOTUM, Champaign, IL
Built 1984 Load: 36.9 t ADT: 100
TR 273
FairOver: COTTONWOOD BRANCH
4 SW OF OWANECO, Christian, IL
Built 1920 Load: 36.9 t ADT: 50
FOSTER AVE
FairOver: N BR CHI RIV WEST
0.1 M W PULASKI RD, Cook, IL
Built 1933 Load: 36.9 t ADT: 23,800
CENTRAL RD
FairOver: DES PLAINES RIVER
.5 M W I-294, Cook, IL
Built 1929 Load: 36.9 t ADT: 12,400
MCHENRY RD
FairOver: WHEELING DRN DTCH
0.2 M NW IL 68, Cook, IL
Built 1931 Load: 36.9 t ADT: 10,000
MADISON ST
FairOver: ADDISON CREEK
0.7 M E US 45, Cook, IL
Built 1920 Load: 36.9 t ADT: 4,100
FAU-1635 (STEGER R
FairOver: PLUM CREEK
0.35 E BURNHAM P2, Cook, IL
Built 1954 Load: 36.9 t ADT: 8,300
I-294,80 WB
FairOver: THORN CR
0.6 M W I94 P24, Cook, IL
Built 1958 Load: 36.9 t ADT: 73,500
US 30 FAP 573
FairOver: LITTLE ROCK CREEK
.5 MI W HINCKLEY, DeKalb, IL
Built 1987 Load: 36.9 t ADT: 3,150
BAYBROOK LANE
FairOver: GINGER CREEK
0.25 MI E MEYERS RD, DuPage, IL
Built 1960 Load: 36.9 t ADT: 225
WESLEY ST
FairOver: UPRR / WEST
100' N MANCHESTER, DuPage, IL
Built 2010 Load: 36.9 t ADT: 1,000
CH-26
FairOver: FULFER CREEK
1 MI SE GILMORE, Effingham, IL
Built 1989 Load: 36.9 t ADT: 150
Hillview Eldred Ro
FairOver: Bushnell Hollow
1.08 S OF ELDRED, Greene, IL
Built 1940 Load: 36.9 t ADT: 625
TR-83
FairOver: STREAM
7.1 MI NE WHITE HALL, Greene, IL
Built 1982 Load: 36.9 t ADT: 50
FAS-292 Gardner Rd
FairOver: Murray Sluice
.28 MI W WARD TR84, Grundy, IL
Built 2002 Load: 36.9 t ADT: 850
TR 56
FairOver: THUNDER CREEK
300' S PRAIRIE RD, Grundy, IL
Built 2008 Load: 36.9 t ADT: 25
FAP-849 (ILL-142)
FairOver: BLUE CREEK
5.3 MI S JEFFERSN CL, Hamilton, IL
Built 1990 Load: 36.9 t ADT: 2,350
ILL 34
FairOver: HOBBS CREEK
3 MI N OF ILL 146, Hardin, IL
Built 1923 Load: 36.9 t ADT: 1,200
FAS 227 - OSCO ROA
FairOver: W. MINERAL CREEK
5 MI. SE OF COLONA, Henry, IL
Built 1991 Load: 36.9 t ADT: 275
FAS 321 CH4 SA 4
FairOver: DRAINAGE DITCH
3.08 MI W OF I-57, Iroquois, IL
Built 1986 Load: 36.9 t ADT: 325
TR 117
FairOver: DRAINAGE DITCH
1.0E 2.75N WATSEKA, Iroquois, IL
Built 1983 Load: 36.9 t ADT: 175
TR-271
FairOver: BIG MUDDY CREEK
2.25 MI.S.LATONA, Jasper, IL
Built 1978 Load: 36.9 t ADT: 100
FAS-789 (CH-3)
FairOver: COAL BANK CREEK
2 MI N HARMONY, Jefferson, IL
Built 1987 Load: 36.9 t ADT: 550
CANYON PARK RD
FairOver: S. FORK APPLE RIVER
4 MI. SW. OF WARREN, Jo Daviess, IL
Built 1995 Load: 36.9 t ADT: 225
ILL 37
FairOver: CACHE RIVER
.5 MI S. OF W VIENNA, Johnson, IL
Built 1931 Load: 36.9 t ADT: 1,350
IL 72
FairOver: COON CREEK
5.3 M W OF IL 47, Kane, IL
Built 1928 Load: 36.9 t ADT: 6,650
IL 1
FairOver: SPRING CREEK
2.6 MI. S. OF IL 17, Kankakee, IL
Built 1994 Load: 36.9 t ADT: 4,450
IL 115
FairOver: GAR CREEK
7.8 MILE W OF KKK, Kankakee, IL
Built 1994 Load: 36.9 t ADT: 1,300
ILL 41
FairOver: CEDAR CREEK TRIB
0.4 MI S JCT IL 116, Knox, IL
Built 2002 Load: 36.9 t ADT: 2,050
IL 176
FairOver: N BR CHICAGO RIVER
0.7 M E OF I-94, Lake, IL
Built 1990 Load: 36.9 t ADT: 15,800
TR-187
FairOver: SPRING CREEK
N 37TH E 160, LaSalle, IL
Built 1970 Load: 36.9 t ADT: 200
TR-13
FairOver: ALLISON DR DT #1
1.5 M NW RUSSELVILLE, Lawrence, IL
Built 1909 Load: 36.9 t ADT: 50
ILL 17
FairOver: W.FK MAZON RIVER
1.33 MI W OF I-55, Livingston, IL
Built 1983 Load: 36.9 t ADT: 1,800
TR 57A
FairOver: BROUGHTON CREEK
3450 E, 2600 N, Livingston, IL
Built 1965 Load: 36.9 t ADT: 75
FAI 155 SB
FairOver: S BR PRAIRIE CREEK
3.0MI S I-155/IL136, Logan, IL
Built 1988 Load: 36.9 t ADT: 5,300
FAI 155 NB
FairOver: S BR PRAIRIE CREEK
3.0MI S I-155/IL136, Logan, IL
Built 1988 Load: 36.9 t ADT: 5,300
TR 290
FairOver: KICKAPOO CRK
2.5 MI S ATLANTA, Logan, IL
Built 1980 Load: 36.9 t ADT: 75
FAP 320 (IL 121)
FairOver: SOUTH FORK CREEK
1.5 MI W OF HEMAN, Macon, IL
Built 1999 Load: 36.9 t ADT: 3,750
TR 45(KIRBY RD)
FairOver: STREAM
2 MI SE OREANA, Macon, IL
Built 1981 Load: 36.9 t ADT: 800
ILL 108
FairOver: COTTONWOOD CREEK
5.0MI E IL 4, Macoupin, IL
Built 1932 Load: 36.9 t ADT: 1,600
IL 140 & IL 111
FairOver: Abandon RR ownd by quarr
0.1mi E of IL 3, Madison, IL
Built 1975 Load: 36.9 t ADT: 18,300
ILL 3 NB
FairOver: WOOD RIVER CREEK
W CL OF E ALTON, Madison, IL
Built 1984 Load: 36.9 t ADT: 21,100
US 40 / ILL 143
FairOver: W Trib to Sugar Crk
2M E Hghlnd rndabout, Madison, IL
Built 1901 Load: 36.9 t ADT: 5,300
TR 252
FairOver: TRIB TO SILVER CK
2.0 MI SW MARINE, Madison, IL
Built 1977 Load: 36.9 t ADT: 200
IL 26
FairOver: SANDY CREEK
.03 MI S OF IL 18, Marshall, IL
Built 1993 Load: 36.9 t ADT: 4,450
ILL 18
FairOver: SANDY CR OVERFLOW
0.3 E. OF RT 26, Marshall, IL
Built 1975 Load: 36.9 t ADT: 2,950
TR 173
FairOver: SPRING CREEK
NE-5-T5NR3W, McDonough, IL
Built 1978 Load: 36.9 t ADT: 100
ANTHONY RD
FairOver: COON CREEK
0.3 MI W OF RILEY RD, McHenry, IL
Built 1979 Load: 36.9 t ADT: 50
Showing 11,301-11,350 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.