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
CREGO ROAD
FairOver: BR SOMONAUK CREEK
890N 1100E, DeKalb, IL
Built 1980 Load: 32.4 t ADT: 25
DUFFY ROAD
FairOver: SOMONAUK CREEK
1000N 1075E, DeKalb, IL
Built 1983 Load: 32.4 t ADT: 25
PRESERVE ROAD
FairOver: LITTLE INDIAN CREEK
900N 635E, DeKalb, IL
Built 1984 Load: 32.4 t ADT: 75
BASTIAN ROAD
FairOver: SOMONAUK CREEK
800N 1320E, DeKalb, IL
Built 1969 Load: 32.4 t ADT: 100
SHABBONA GROVE ROA
FairOver: SOMONAUK CREEK
700N 1270E, DeKalb, IL
Built 1978 Load: 32.4 t ADT: 50
SCOTT ROAD
FairOver: BIG ROCK CREEK
1000N 1715E, DeKalb, IL
Built 1980 Load: 32.4 t ADT: 125
W SANDWICH ROAD
FairOver: BR. LITTLR ROCK CRK.
615N 1630E, DeKalb, IL
Built 1979 Load: 32.4 t ADT: 50
SHABBONA GROVE ROA
FairOver: LITTLE ROCK CREEK
700N 1720E, DeKalb, IL
Built 1981 Load: 32.4 t ADT: 75
WESSON ROAD
FairOver: LITTLE INDIAN CREEK
350N 790E, DeKalb, IL
Built 1982 Load: 32.4 t ADT: 75
MAPLEWOOD ROAD
FairOver: BR LITTLE INDIAN CRK
475N 1075E, DeKalb, IL
Built 1989 Load: 32.4 t ADT: 25
LELAND RD
FairOver: LITTLE INDIAN CREEK
290N 750E, DeKalb, IL
Built 1997 Load: 32.4 t ADT: 350
COLLEGE AVENUE
FairOver: SO BR KISHWAUKEE RIV
COLLEGE AVE DEKALB, DeKalb, IL
Built 1962 Load: 32.4 t ADT: 550
PARK ROAD
FairOver: INDIAN CREEK
SHABBONA STATE PARK, DeKalb, IL
Built 1976 Load: 32.4 t ADT: 425
I-88
FairOver: STREAM
.50 MI E OF CNTY LIN, DeKalb, IL
Built 1972 Load: 32.4 t ADT: 24,000
US 36(FAP 323)
FairOver: SCATTERING FORK
IN TUSCOLA, Douglas, IL
Built 1972 Load: 32.4 t ADT: 5,050
TR 25
FairOver: HACKETT BRANCH
3.0 MI NE OF TUSCOLA, Douglas, IL
Built 1979 Load: 32.4 t ADT: 75
TR 214
FairOver: JORDAN SLOUGH
1.4 S OF LONGVIEW, Douglas, IL
Built 1978 Load: 32.4 t ADT: 25
TR 54
FairOver: DRAINAGE DITCH
2.5 MI S CHESTERVILL, Douglas, IL
Built 1979 Load: 32.4 t ADT: 300
TR 91
FairOver: DRY FORK
1.2 M NW OF BOURBON, Douglas, IL
Built 1981 Load: 32.4 t ADT: 200
TR 137
FairOver: W FORK KASKASKIA R
2.6 MI NE OF ARTHUR, Douglas, IL
Built 1985 Load: 32.4 t ADT: 50
TR 187 A
FairOver: STREAM
2 MI SE OF FILSON, Douglas, IL
Built 1975 Load: 32.4 t ADT: 50
TR 114
FairOver: STREAM
1.8 MI SE OF GALTON, Douglas, IL
Built 1975 Load: 32.4 t ADT: 50
TR 114
FairOver: STREAM
3 MI NE OF ARCOLA, Douglas, IL
Built 1975 Load: 32.4 t ADT: 50
TR 154
FairOver: DEER CREEK
1.8 MI NW HINDSBORO, Douglas, IL
Built 1993 Load: 32.4 t ADT: 75
TR 200
FairOver: DRAINAGE DITCH
0.78 MI S TR 87, Douglas, IL
Built 1983 Load: 32.4 t ADT: 50
EAST NEW YORK ST
FairOver: EJ&E RR
1.5 M W OF ILL-59, DuPage, IL
Built 1929 Load: 32.4 t ADT: 12,700
IL 19
FairOver: SALT CREEK
.3 M W OF WOODALE RD, DuPage, IL
Built 1983 Load: 32.4 t ADT: 27,300
IL 59
FairOver: FERRY CREEK
0.25 M N OF IL 56, DuPage, IL
Built 1990 Load: 32.4 t ADT: 34,900
I-355
FairOver: ST.JOSEPH CREEK
.5 MI S. US 34, DuPage, IL
Built 1988 Load: 32.4 t ADT: 72,550
Columbia Street
FairOver: BNSF Railway
0.4MI S US 34, DuPage, IL
Built 1975 Load: 32.4 t ADT: 1,600
COM ED ACCESS RD
FairOver: WAUBANSEE CREEK
.15 M S of McCoy Dr, DuPage, IL
Built 2015 Load: 32.4 t ADT: 200
YORK RD
FairOver: SALT CREEK
1M S. 31ST ST, DuPage, IL
Built 1996 Load: 32.4 t ADT: 8,650
DIEHL ROAD
FairOver: FERRY CREEK
0.3 MI E Raymond Dr, DuPage, IL
Built 1992 Load: 32.4 t ADT: 4,050
CH38 - 63RD ST
FairOver: FLAGG CREEK TRIB
0.1 E IL 83, DuPage, IL
Built 1981 Load: 32.4 t ADT: 9,200
WILLIAMS ROAD
FairOver: W. BR. DUPAGE RIVER
0.1M N BATAVIA RD, DuPage, IL
Built 2015 Load: 32.4 t ADT: 1,400
Frontage Road
FairOver: SALT CREEK
0.6MI E OF IL 83, DuPage, IL
Built 2008 Load: 32.4 t ADT: 1,750
LIES RD
FairOver: KLEIN CR
300 FT W GARY AVE, DuPage, IL
Built 1985 Load: 32.4 t ADT: 7,000
WOODWARD AVE
FairOver: PRENTISS CREEK
0.3 MI S 63RD ST, DuPage, IL
Built 1973 Load: 32.4 t ADT: 12,300
PRENTISS DRIVE
FairOver: PRENTISS CREEK
.3 MI E WOODWARD AVE, DuPage, IL
Built 1973 Load: 32.4 t ADT: 825
SCHICK ROAD
FairOver: I.C.RR
2.2M E OF IL-59, DuPage, IL
Built 1991 Load: 32.4 t ADT: 11,400
WILSON AVE
FairOver: C&NW RR
S.OF MAIN ST., DuPage, IL
Built 1987 Load: 32.4 t ADT: 2,400
IL 133(FAP 749)
FairOver: STREAM
1 MI E OF REDMON, Edgar, IL
Built 2006 Load: 32.4 t ADT: 2,100
FAS 678(CH 1)
FairOver: BROUILLETTS CREEK
4 MI E EDGAR AIRPT, Edgar, IL
Built 1977 Load: 32.4 t ADT: 100
TR 70 A
FairOver: STREAM
0.5 MI W OF HUME, Edgar, IL
Built 1979 Load: 32.4 t ADT: 200
TR 7 A(CLARK CO)
FairOver: E FORK OF BIG CREEK
.5 MI W OF OLIVER, Edgar, IL
Built 1990 Load: 32.4 t ADT: 50
TR 235A
FairOver: HICKORY GROVE CREEK
9.5 MI W OF PARIS, Edgar, IL
Built 1991 Load: 32.4 t ADT: 50
CH 8
FairOver: N FORK BROUILLETTS C
1.5 MI W ST BERNICE, Edgar, IL
Built 1993 Load: 32.4 t ADT: 150
CH 18
FairOver: BIG CREEK
1.4 MI S BELL RIDGE, Edgar, IL
Built 2001 Load: 32.4 t ADT: 50
TR 274
FairOver: CRABAPPLE CREEK
1.75 MI NE OF LOGAN, Edgar, IL
Built 1981 Load: 32.4 t ADT: 75
TR 87
FairOver: SALT FORK
2 MI SE OF SCOTTLAND, Edgar, IL
Built 1984 Load: 32.4 t ADT: 25
Showing 7,851-7,900 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.