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
US 52
FairOver: WILSON CREEK
MANHATTAN, Will, IL
Built 1981 Load: 39.9 t ADT: 8,850
FAS 904
FairOver: LITTLE CRAB ORCHARD
2.06 MI SO PITTSBURG, Williamson, IL
Built 1972 Load: 39.9 t ADT: 2,950
ILL 2
FairOver: DRAINAGE DITCH
1 MI N OF LATHAM RD, Winnebago, IL
Built 1989 Load: 39.9 t ADT: 9,950
ELEVATOR RD
FairOver: NO KINNIKINNICK CR
0.15 MI. E. ILL 251, Winnebago, IL
Built 1969 Load: 39.9 t ADT: 9,800
I-90 N B
FairOver: STONEBRIDGE TRAIL
1 MI E OF ROSCOE, Winnebago, IL
Built 1958 Load: 39.9 t ADT: 28,550
TR 102
FairOver: PRAIRIE CREEK
3.5 MI SSW VIRGINIA, Cass, IL
Built 1983 Load: 40.2 t ADT: 50
US 150(FAP 808)
FairOver: BONEYARD CREEK
JUST E FIVE POINTS, Champaign, IL
Built 1970 Load: 40.2 t ADT: 12,000
I-57
FairOver: STREAM
1 MI S OF THOMABORO, Champaign, IL
Built 1968 Load: 40.2 t ADT: 22,500
CH 22-FAS 636
FairOver: MOSQUITO CREEK
1.9 MI N MT AUBURN, Christian, IL
Built 1969 Load: 40.2 t ADT: 600
OLD US 50
FairOver: E Trib to Beaver Crk
1.1 MI E BECKEMEYER, Clinton, IL
Built 1922 Load: 40.2 t ADT: 4,700
I- 57 SB
FairOver: CAL SAG CHANNEL
0.5 M S 127TH, Cook, IL
Built 1966 Load: 40.2 t ADT: 54,400
I- 57 NB
FairOver: CAL SAG CHANNEL
0.5 M S 127TH, Cook, IL
Built 1966 Load: 40.2 t ADT: 54,400
IL 83 (SIBLEY BLV
FairOver: LITTLE CAL RIVER
1 M E IL 1, Cook, IL
Built 1922 Load: 40.2 t ADT: 27,200
IL 394 SB
FairOver: RR - EJ&E AND NS
0.5 M S US 30, Cook, IL
Built 1955 Load: 40.2 t ADT: 30,700
IL 50 (CICERO AVE
FairOver: RR - CSXT
0.3 M S 115TH ST, Cook, IL
Built 1970 Load: 40.2 t ADT: 37,400
131ST ST
FairOver: RR - METRA
0.9 M E US 45, Cook, IL
Built 1995 Load: 40.2 t ADT: 6,750
IL 83 (ELMHURST R
FairOver: WHEELING DRN DITCH
0.3 M N IL 68, Cook, IL
Built 2003 Load: 40.2 t ADT: 11,400
IL 394 NB
FairOver: RR - CN
I80/294 & Ill 394, Cook, IL
Built 2006 Load: 40.2 t ADT: 89,200
STATE ST
FairOver: DEER CREEK
0.1 M S MAIN P2, Cook, IL
Built 1953 Load: 40.2 t ADT: 1,800
US 51 (NB)(FAP 322
FairOver: TEN MILE CREEK
2.0 MI N OF CLINTON, De Witt, IL
Built 1986 Load: 40.2 t ADT: 10,300
I-57 (SB)
FairOver: HAYES BRANCH
E EDGE OF TUSCOLA, Douglas, IL
Built 1969 Load: 40.2 t ADT: 11,050
IL 83
FairOver: RR - METRA
0.1 M S OF IL 19, DuPage, IL
Built 1972 Load: 40.2 t ADT: 45,500
IL 390 ELGIN-O'HAR
FairOver: W BR DU PAGE RIVER
EAST OF LAKE STREET, DuPage, IL
Built 1992 Load: 40.2 t ADT: 25,700
FABYAN PARKWAY
FairOver: KRESS CREEK
0.66 MI S OF IL 38, DuPage, IL
Built 1971 Load: 40.2 t ADT: 8,800
US 24
FairOver: OTTER CREEK
1 MI SW JCT US136&24, Fulton, IL
Built 1925 Load: 40.2 t ADT: 1,750
ILL 1
FairOver: STREAM
4 MI. S OF ILL 13, Gallatin, IL
Built 1935 Load: 40.2 t ADT: 1,850
FAI 80 EBL
FairOver: W FORK NETTLE CR
2.52 MI W OF IL 47, Grundy, IL
Built 1958 Load: 40.2 t ADT: 15,300
FAI 80 WBL
FairOver: W FORK NETTLE CR
2.52 MI W OF IL 47, Grundy, IL
Built 1958 Load: 40.2 t ADT: 15,300
TR-167 SCULLY RD
FairOver: TRIB E FK MAZON RIV
.09 MI W CH-31, Grundy, IL
Built 2005 Load: 40.2 t ADT: 50
IL 94
FairOver: LONG CREEK
1.1M N US136,CARTHAG, Hancock, IL
Built 1932 Load: 40.2 t ADT: 3,750
ILL 94
FairOver: JINKS HOLLOW CREEK
3.5 MI N BIGGSVILLE, Henderson, IL
Built 1988 Load: 40.2 t ADT: 575
US 34
FairOver: P.D. CREEK
7.5 MI W BIGGSVILLE, Henderson, IL
Built 2008 Load: 40.2 t ADT: 6,050
FAS-2826 (ILL-37)
FairOver: NORFOLK & SOUTHERN RR
3 MI S DIX, Jefferson, IL
Built 1957 Load: 40.2 t ADT: 4,800
I 64 EB
FairOver: RAYSE CK
4.5 MI W WOODLAWN IN, Jefferson, IL
Built 1974 Load: 40.2 t ADT: 14,300
I 64 WB
FairOver: RAYSE CREEK
4.5 MI W WOODLAN INT, Jefferson, IL
Built 1974 Load: 40.2 t ADT: 14,300
ILL 147
FairOver: BAY CREEK
0.2 MI W POPE CO L., Johnson, IL
Built 1936 Load: 40.2 t ADT: 400
IL 31
FairOver: MILL CREEK
1.1 M N OF IL 56, Kane, IL
Built 1935 Load: 40.2 t ADT: 21,500
STEARNS RD
FairOver: FOX RIVER
0.6 MI W OF IL25, Kane, IL
Built 2010 Load: 40.2 t ADT: 15,400
ILL 180
FairOver: WALNUT CREEK
2.5M S OF ILL 17, Knox, IL
Built 1993 Load: 40.2 t ADT: 625
TR 206
FairOver: FOREMAN CREEK
S.CTR-5-T12NR3E, Knox, IL
Built 1900 Load: 40.2 t ADT: 10
IL 176
FairOver: DES PLAINES RIVER
0.9 M E OF IL 21, Lake, IL
Built 1925 Load: 40.2 t ADT: 14,300
RAVINE DRIVE
FairOver: RAVINE
2 M N LAKE COOK ROAD, Lake, IL
Built 1957 Load: 40.2 t ADT: 200
TR 125
FairOver: DITCH
710 E, 1800 N, Livingston, IL
Built 1924 Load: 40.2 t ADT: 125
US 136
FairOver: PRAIRIE CREEK
1.9M W I-155, Logan, IL
Built 1937 Load: 40.2 t ADT: 2,300
TR 290
FairOver: KICKAPOO CK TRIB
2 MI S ATLANTA, Logan, IL
Built 1971 Load: 40.2 t ADT: 75
LIVINGSTON ROAD
FairOver: SILVER CREEK
1.7 MI E. I-55, Madison, IL
Built 1991 Load: 40.2 t ADT: 1,400
FAS 2735
FairOver: SHERRY CK
1.2MI E PRRTWN, Madison, IL
Built 1950 Load: 40.2 t ADT: 1,800
US 136
FairOver: RED OAK DITCH
3.5 MI W JCT 29&136, Mason, IL
Built 1962 Load: 40.2 t ADT: 1,150
ILL 9
FairOver: BAPTIST CREEK
2 MI E BLANDINSVILLE, McDonough, IL
Built 1997 Load: 40.2 t ADT: 1,600
PAGLES ROAD
FairOver: MOKELER CREEK
0.2 MI N OF STREIT R, McHenry, IL
Built 1980 Load: 40.2 t ADT: 100
Showing 12,051-12,100 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.