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
ILL 251 SB
FairOver: S KINNIKINNICK CR
0.8 M S HONONEGAH RD, Winnebago, IL
Built 1967 Load: 36.3 t ADT: 27,200
I-39 & US 51 SB
FairOver: KISHWAUKEE RIVER
0.75 MI S BLKHAWK RD, Winnebago, IL
Built 1980 Load: 36.3 t ADT: 14,500
I-39 & US 51 NB
FairOver: KISHWAUKEE RIVER
0.75 MI S BLKHAWK RD, Winnebago, IL
Built 1981 Load: 36.3 t ADT: 14,500
PERRYVILLE RD
FairOver: UNION PACIFIC RAILRO
.2 MI N I-39, Winnebago, IL
Built 2016 Load: 36.3 t ADT: 7,450
FARM SCHOOL ROAD
FairOver: BRANCH OF PINK CREEK
0.2 MI W BEST ROAD, Winnebago, IL
Built 1963 Load: 36.3 t ADT: 50
REED AVE
FairOver: S.E. DRAINAGEWAY
0.1 MI W OF 11TH ST, Winnebago, IL
Built 1967 Load: 36.3 t ADT: 425
TR-190
FairOver: Sand Brook
1702N;1225E (N US24), Adams, IL
Built 1921 Load: 36.6 t ADT: 50
ILL 127
FairOver: BEAVER CREEK
0.26 MI S US 40, Bond, IL
Built 1966 Load: 36.6 t ADT: 6,000
IL 173
FairOver: BEAVER CREEK
2.0 MI E POPLAR GROV, Boone, IL
Built 2008 Load: 36.6 t ADT: 4,550
I-180 NB
FairOver: EAST BUREAU CREEK
3.4 MI S JCT FAI 80, Bureau, IL
Built 1968 Load: 36.6 t ADT: 1,300
6TH STREET
FairOver: BNSF RAILROAD
NE EDGE OF PRINCETON, Bureau, IL
Built 1996 Load: 36.6 t ADT: 2,600
I-57(NB)
FairOver: 2 MILE SLOUGH
W OF TOLONO, Champaign, IL
Built 1963 Load: 36.6 t ADT: 11,550
I-57(SB)
FairOver: 2 MILE SLOUGH
W OF TOLONO, Champaign, IL
Built 1963 Load: 36.6 t ADT: 11,550
US 150(FAS 1518)
FairOver: SANGAMON RIVER
E EDGE OF MAHOMET, Champaign, IL
Built 1980 Load: 36.6 t ADT: 9,800
TR 189
FairOver: S. FORK SANGAMON R.
2.0 M S LANGLEYVLLE, Christian, IL
Built 1971 Load: 36.6 t ADT: 325
CH 8
FairOver: LAKE TAYLORVILLE
3 MI W OWANECO, Christian, IL
Built 2002 Load: 36.6 t ADT: 300
I-70 (EB)
FairOver: N FORK EMBARRASS R
MARTINSVILLE, Clark, IL
Built 1968 Load: 36.6 t ADT: 11,400
I-70 (WB)
FairOver: N FORK EMBARRASS R
MARTINSVILLE, Clark, IL
Built 1968 Load: 36.6 t ADT: 11,400
TR 206
FairOver: E MILL CREEK TRIB
2.5 MI W MARSHALL, Clark, IL
Built 1965 Load: 36.6 t ADT: 20
IL 16 & US 45(FA 3
FairOver: CN RR
CHARLESTON AV MATTON, Coles, IL
Built 1981 Load: 36.6 t ADT: 12,700
IL 72 (HIGGINS RD
FairOver: DES PLAINES RIVER
0.6 M SE I-294, Cook, IL
Built 1929 Load: 36.6 t ADT: 17,000
US 45 (RIVER RD)
FairOver: MCDONALD CREEK
1.8 N OF IL 58, Cook, IL
Built 1984 Load: 36.6 t ADT: 18,000
HOFFMAN BLVD
FairOver: EJ&E RAILROAD
0.6 MI W OF IL 59, Cook, IL
Built 1997 Load: 36.6 t ADT: 3,000
ALGONQUIN RD
FairOver: DESPLAINES RIV
DESPLAINS RIV P11, Cook, IL
Built 1927 Load: 36.6 t ADT: 5,650
OAK STREET
FairOver: LITTLE ROCK CREEK
940N 1650E, DeKalb, IL
Built 1956 Load: 36.6 t ADT: 325
ST. CHARLES ROAD
FairOver: E. BR. DUPAGE RIVER
1.0M W OF ILL 53, DuPage, IL
Built 1933 Load: 36.6 t ADT: 15,100
IL 59
FairOver: RR - UP & CN
1.25 M N OF IL 38, DuPage, IL
Built 1975 Load: 36.6 t ADT: 34,400
TR 71
FairOver: BRUSHY FORK
0.5 MI SE OF HUME, Edgar, IL
Built 1973 Load: 36.6 t ADT: 50
FAS-716
FairOver: SUGAR CREEK
2 MI N ST ELMO, Fayette, IL
Built 1940 Load: 36.6 t ADT: 1,050
ILL 37
FairOver: M FORK BIG MUDDY R
0.5 MI N W FRANKFORT, Franklin, IL
Built 1938 Load: 36.6 t ADT: 5,500
TR 99
FairOver: LITTLE CREEK
3.5 MI S LAHARPE, Hancock, IL
Built 1979 Load: 36.6 t ADT: 50
US 34EB
FairOver: CRYSTAL LK DR DITCH
1 MI E OF GULFPORT, Henderson, IL
Built 1998 Load: 36.6 t ADT: 10,200
US 34WB
FairOver: CRYSTAL LK DR DITCH
1 MI E OF GULFPORT, Henderson, IL
Built 1998 Load: 36.6 t ADT: 10,200
US 34EB
FairOver: S. HENDERSON CR
EAST EDGE BIGGSVILLE, Henderson, IL
Built 2014 Load: 36.6 t ADT: 4,000
US 34WB
FairOver: S. HENDERSON CR
E EDGE BIGGSVILLE, Henderson, IL
Built 2014 Load: 36.6 t ADT: 4,000
CH 42
FairOver: TRIB SPRING CREEK
2.1 MI N US 24, Iroquois, IL
Built 1972 Load: 36.6 t ADT: 75
ILLINOIS 3
FairOver: UP RR
NORTH OF GORHAM RD., Jackson, IL
Built 1976 Load: 36.6 t ADT: 1,400
CH-10
FairOver: DRAINAGE DITCH
W LINE SEC 11-9-4, Jackson, IL
Built 1979 Load: 36.6 t ADT: 100
US 20 AND IL 84
FairOver: GALENA RIV AND ICGRR
IN GALENA, Jo Daviess, IL
Built 1984 Load: 36.6 t ADT: 8,250
TR-133 (Rowe Road)
FairOver: Welch Creek
2.6 MI SW ELBURN, Kane, IL
Built 1978 Load: 36.6 t ADT: 125
SEAVEY RD
FairOver: BLACKBERRY CREEK
0.6 MI NW FINLEY RD, Kane, IL
Built 1971 Load: 36.6 t ADT: 50
BARRON ROAD
FairOver: VIRGIL DR DT 3
1.0 MI N Ramm Rd., Kane, IL
Built 1982 Load: 36.6 t ADT: 50
CRAWFORD ROAD
FairOver: BOWES CREEK
0.2 M S OF BOWES RD, Kane, IL
Built 1986 Load: 36.6 t ADT: 750
FAP 574 (IL 41)
FairOver: BNSF RR
S OF GALESBURG, Knox, IL
Built 2004 Load: 36.6 t ADT: 4,800
US 6
FairOver: GUM CREEK
6.08 MI E OF ILL 71, LaSalle, IL
Built 1926 Load: 36.6 t ADT: 2,450
I-80 WB
FairOver: FOX RIVER
2.5 M E OF ILL 23, LaSalle, IL
Built 1996 Load: 36.6 t ADT: 13,700
I-80 EB
FairOver: FOX RIVER
2.5 MI E OF IL 23, LaSalle, IL
Built 1995 Load: 36.6 t ADT: 13,700
TR 332 B
FairOver: WOLF CREEK
E 20TH N 1810, LaSalle, IL
Built 1969 Load: 36.6 t ADT: 25
I 39&US 51
FairOver: STEWARD CREEK BRANCH
0.06 MI S PERRY RD, Lee, IL
Built 1984 Load: 36.6 t ADT: 19,500
TR-289 (ST MARYS R
FairOver: TRIB OF BUREAU CREEK
0.25 M W CENTER ROAD, Lee, IL
Built 1982 Load: 36.6 t ADT: 25
Showing 11,201-11,250 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.