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
TR 67
FairOver: DUTCHMAN CREEK
NW1/4 SEC36 T11S,R2E, Johnson, IL
Built 2003 Load: 32.4 t ADT: 75
TR 35
FairOver: CLIFTY CREEK
2 MI E NEW BURNSIDE, Johnson, IL
Built 1997 Load: 32.4 t ADT: 10
IL 72
FairOver: COON CREEK BRANCH
5.9 M W OF IL 47, Kane, IL
Built 1981 Load: 32.4 t ADT: 4,950
MAIN STREET
FairOver: BIG ROCK CREEK
0.5M. E. COUNT LINE, Kane, IL
Built 1966 Load: 32.4 t ADT: 550
RANDALL ROAD
FairOver: MILL CREEK
0.7 MI S. MAIN ST, Kane, IL
Built 1953 Load: 32.4 t ADT: 29,900
BOWES ROAD
FairOver: FITCHIE CREEK
3.0 MI SW ELGIN, Kane, IL
Built 2009 Load: 32.4 t ADT: 7,800
IL 47
FairOver: EAKIN CREEK
0.40 M N I-90, Kane, IL
Built 1994 Load: 32.4 t ADT: 27,400
INDIAN TRAIL
FairOver: FOX RIVER
0.5 MI W MITCHELL RD, Kane, IL
Built 1963 Load: 32.4 t ADT: 19,400
STATE ST.
FairOver: FOX RIVER
300 FT E OF LAFOX ST, Kane, IL
Built 1988 Load: 32.4 t ADT: 3,800
FARNSWORTH AVE.
FairOver: WAUBANSEE CREEK
0.5M.N.OF US-34, Kane, IL
Built 1989 Load: 32.4 t ADT: 3,300
GRANART ROAD
FairOver: DUFFIN DRAIN
0.35 MI W./ DUGAN RD, Kane, IL
Built 1999 Load: 32.4 t ADT: 6,100
KESLINGER ROAD
FairOver: TRIB BIG ROCK CREEK
.1MI W MEREDITH RD, Kane, IL
Built 1984 Load: 32.4 t ADT: 3,350
WALKER RD
FairOver: HAMPSHIRE CREEK
2.6 MI NW HAMPSHIRE, Kane, IL
Built 1977 Load: 32.4 t ADT: 1,250
KESLINGER ROAD
FairOver: LAFOX TRIB MILL CRK
.3M W OF BRUNDIGE RD, Kane, IL
Built 2009 Load: 32.4 t ADT: 5,800
HIGH STREET
FairOver: B+N RR & INDIAN CR.
1.1 Mi S E Indian Tr, Kane, IL
Built 1986 Load: 32.4 t ADT: 7,750
SULLIVAN ROAD
FairOver: FOX RIVER
IL RT 31 TO IL RT 25, Kane, IL
Built 2006 Load: 32.4 t ADT: 10,500
RED GATE ROAD
FairOver: FOX RIVER BIKE TRAIL
0.12 M W of IL 25, Kane, IL
Built 2011 Load: 32.4 t ADT: 12,400
WOOD STREET
FairOver: BNSF AND INDIAN CR
1000FT W OF OHIO ST, Kane, IL
Built 2009 Load: 32.4 t ADT: 1,100
BOWES CREEK BLVRD
FairOver: ILLINOIS CENTRAL RR
2.1 MI W OF RANDALL, Kane, IL
Built 2006 Load: 32.4 t ADT: 1,850
RED GATE ROAD
FairOver: FOX RIVER
0.18 M E IL 31, Kane, IL
Built 2012 Load: 32.4 t ADT: 12,400
SUN CITY BLVD
FairOver: EAKIN CREEK
0.3 MI W DEL WEBB, Kane, IL
Built 1998 Load: 32.4 t ADT: 3,450
FARNSWORTH AVE
FairOver: BN RR
2 MI S OF I-88, Kane, IL
Built 1978 Load: 32.4 t ADT: 21,300
ROYAL BOULEVARD
FairOver: TYLER CREEK
.4 MI W MCLEAN BLVD, Kane, IL
Built 1988 Load: 32.4 t ADT: 6,300
3RD. AVENUE
FairOver: UPRR (ABANDONED)
0.3M N OF IL.64, Kane, IL
Built 1985 Load: 32.4 t ADT: 525
2ND AVENUE
FairOver: UPRR (ABANDONED)
0.3M N OF IL 64, Kane, IL
Built 1985 Load: 32.4 t ADT: 1,000
US 45-52
FairOver: TRIB OF TRAIL CREEK
4.6 MI S OF I-57, Kankakee, IL
Built 1990 Load: 32.4 t ADT: 3,850
CH 7
FairOver: ROCK CREEK
1.7 MI S DESELM, Kankakee, IL
Built 1964 Load: 32.4 t ADT: 800
CH 7
FairOver: FORKED CR
6.9 MI NW MANTENO, Kankakee, IL
Built 1967 Load: 32.4 t ADT: 1,200
TR 10 B
FairOver: CRANE CREEK
3.5 MI NE OF REDDICK, Kankakee, IL
Built 1968 Load: 32.4 t ADT: 50
TR 2
FairOver: REDDICK RUN
1.06 MI S.of CH 25, Kankakee, IL
Built 1983 Load: 32.4 t ADT: 75
TR 29
FairOver: EXLINE SLOUGH
5.5 MI SE MANTENO, Kankakee, IL
Built 1976 Load: 32.4 t ADT: 375
TR 165
FairOver: W BRANCH HORSE CREEK
0.6 MI W HERSCHER, Kankakee, IL
Built 1976 Load: 32.4 t ADT: 175
TR 49A
FairOver: DITCH
6 MI NE MOMENCE, Kankakee, IL
Built 1976 Load: 32.4 t ADT: 100
TR 31
FairOver: BULL CREEK
SHERBURNVILLE, Kankakee, IL
Built 1977 Load: 32.4 t ADT: 100
TR 0041
FairOver: TRIM CREEK
4MI NE MOMENCE, Kankakee, IL
Built 1977 Load: 32.4 t ADT: 525
TR 39
FairOver: EXLINE SLOUGH
1 MI N OF ST GEORGE, Kankakee, IL
Built 1979 Load: 32.4 t ADT: 75
TR 165
FairOver: REDDICK RUN
5.75 MI W HERSCHER, Kankakee, IL
Built 1979 Load: 32.4 t ADT: 50
TR 11
FairOver: ROCK CREEK
3.5 NW MANTENO, Kankakee, IL
Built 1980 Load: 32.4 t ADT: 125
TR 6
FairOver: MACON CR
1.1 MI NE REDDICK, Kankakee, IL
Built 1979 Load: 32.4 t ADT: 25
TR 119
FairOver: HORSE CR
3 MI N HERSCHER, Kankakee, IL
Built 1981 Load: 32.4 t ADT: 75
TR 158
FairOver: SO BR ROCK CREEK
1 MI E MANTENO, Kankakee, IL
Built 1981 Load: 32.4 t ADT: 2,750
TR 7A
FairOver: BLACK WALNUT CR
3 MI NE MANTENO, Kankakee, IL
Built 1982 Load: 32.4 t ADT: 100
TR 226C BRICKYARD
FairOver: INTERMIT STREAM
1 MI EAST MOMENCE, Kankakee, IL
Built 1981 Load: 32.4 t ADT: 150
TR 19A
FairOver: ROCK CREEK
2.5 MI SE DESELM, Kankakee, IL
Built 1983 Load: 32.4 t ADT: 75
TR 147
FairOver: CRANE CR
4.5 MI NW HERSCHER, Kankakee, IL
Built 1981 Load: 32.4 t ADT: 75
TR 147
FairOver: REDDICK RUN
2 MI S REDDICK, Kankakee, IL
Built 1981 Load: 32.4 t ADT: 50
TR 147
FairOver: HORSE CREEK W BR
1.5 MI NW HERSCHER, Kankakee, IL
Built 1981 Load: 32.4 t ADT: 50
TR 78
FairOver: FORKED CR SO BR
9.25 MI NW MANTENO, Kankakee, IL
Built 1981 Load: 32.4 t ADT: 75
TR 101A
FairOver: W BR HORSE CREEK
5 MI SW BONFIELD, Kankakee, IL
Built 1987 Load: 32.4 t ADT: 50
TR 21
FairOver: EXLINE SLOUGH
3 MI N ST. GEORGE, Kankakee, IL
Built 1982 Load: 32.4 t ADT: 25
Showing 8,351-8,400 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.