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 90
FairOver: TURNER BRANCH
1.4MI N OF BATCHTOWN, Calhoun, IL
Built 2004 Load: 32.4 t ADT: 250
TR 90
FairOver: GILEAD CK
7.7 MI S OF HAMBURG, Calhoun, IL
Built 1999 Load: 32.4 t ADT: 175
FAS 755
FairOver: FOX CREEK
0.5 M S MOZIER, Calhoun, IL
Built 2010 Load: 32.4 t ADT: 225
FAS 755
FairOver: CREEK
2 M NORTH HAMBURG, Calhoun, IL
Built 2010 Load: 32.4 t ADT: 225
FAS 754
FairOver: POHLMAN CREEK
NORTH CL OF BRUSSELS, Calhoun, IL
Built 1990 Load: 32.4 t ADT: 1,050
FAS 769
FairOver: IRISH CREEK
EAST CL HAMBURG, Calhoun, IL
Built 1995 Load: 32.4 t ADT: 200
IL 73
FairOver: STREAM
0.5 MI. N. OF IL 72, Carroll, IL
Built 1996 Load: 32.4 t ADT: 2,550
ILL 64
FairOver: STREAM
2.6 MI W JCT ILL 78, Carroll, IL
Built 2008 Load: 32.4 t ADT: 3,100
W MESSMER ROAD
FairOver: CAMP CREEK
3 MI NNE SAVANNA, Carroll, IL
Built 1977 Load: 32.4 t ADT: 25
ZION RD - CH 16
FairOver: CAMP CREEK
1.5MI E MISS PALISAD, Carroll, IL
Built 1994 Load: 32.4 t ADT: 150
SKUNK HOLLOW ROAD
FairOver: BR OF E FORK PLUM RV
4.5 M N MT CARROLL, Carroll, IL
Built 1981 Load: 32.4 t ADT: 25
N CENTER DRIVE
FairOver: STRADDLE CREEK
1 MI NE LANARK, Carroll, IL
Built 1978 Load: 32.4 t ADT: 200
STRADDLE CREEK RD
FairOver: STRADDLE CREEK
2 MI E OF IL 73, Carroll, IL
Built 2003 Load: 32.4 t ADT: 250
N GOLD MINE ROAD
FairOver: BR W FORK ELKHORN CR
6.5 M E OF LANARK, Carroll, IL
Built 1982 Load: 32.4 t ADT: 100
N. STANTON RD /TR1
FairOver: LOST CREEK
1.5 MI. N. SHANNON, Carroll, IL
Built 1989 Load: 32.4 t ADT: 350
WACKER RD
FairOver: BNSF RR
SE EDGE OF SAVANNA, Carroll, IL
Built 1996 Load: 32.4 t ADT: 775
OIL VALLEY SCHOOL
FairOver: EAST JOHNSON CREEK
1.5 MI NE ARGO FAY, Carroll, IL
Built 1980 Load: 32.4 t ADT: 200
HICKORY GROVE ROAD
FairOver: BR OF PLUM RIVER
3 MI SE SAVANNA, Carroll, IL
Built 1984 Load: 32.4 t ADT: 25
MILL RD
FairOver: JOHNSON CREEK
1.5 MI S. MT CARROLL, Carroll, IL
Built 1989 Load: 32.4 t ADT: 50
FULRATH MILL RD
FairOver: CARROLL CREEK
2 MI W MT CARROLL, Carroll, IL
Built 1980 Load: 32.4 t ADT: 125
VANBUSKIRK RD
FairOver: STRADDLE CREEK
2 M W OF LANARK, Carroll, IL
Built 1982 Load: 32.4 t ADT: 200
E TELEGRAPH ROAD
FairOver: ROCK CREEK
1.5 M NE CHADWICK, Carroll, IL
Built 1984 Load: 32.4 t ADT: 250
SOUTH SHANNON ROUT
FairOver: MIDDLE CREEK
5 M NE MILLEDGEVILLE, Carroll, IL
Built 1986 Load: 32.4 t ADT: 500
SOUTH WATER ROAD
FairOver: ELKHORN CREEK
6 M NE MILLEDGEVILLE, Carroll, IL
Built 1978 Load: 32.4 t ADT: 50
E ELM ROAD
FairOver: ELKHORN CREEK
5 M NE MILLEDGEVILLE, Carroll, IL
Built 1983 Load: 32.4 t ADT: 25
MIDDLE CRK RD-TR 1
FairOver: BR. OF MIDDLE CREEK
7 MI. SE OF LANARK, Carroll, IL
Built 1990 Load: 32.4 t ADT: 100
SHANNON RTE
FairOver: MIDDLE CREEK
3 MI. S. US52/IL64, Carroll, IL
Built 1998 Load: 32.4 t ADT: 175
W FAIRHAVEN ROAD
FairOver: JOHNSON CREEK
1.5 M SE THOMPSON, Carroll, IL
Built 1981 Load: 32.4 t ADT: 75
THOMSON RD
FairOver: LITTLE ROCK CREEK
5 MI SW CHADWICK, Carroll, IL
Built 1932 Load: 32.4 t ADT: 50
E FAIRHAVEN ROAD
FairOver: BR LITTLE ROCK CREEK
5.5 MI SW CHADWICK, Carroll, IL
Built 1983 Load: 32.4 t ADT: 100
SOUTH OTTER CREEK
FairOver: OTTER CREEK
4 MI N MILLEDGEVILLE, Carroll, IL
Built 1959 Load: 32.4 t ADT: 50
SOUTH CENTER DRIVE
FairOver: OTTER CREEK
4 MILES E CHADWICK, Carroll, IL
Built 1962 Load: 32.4 t ADT: 50
E LIVINGGOOD ROAD
FairOver: ROCK CREEK
3 MI SE CHADWICK, Carroll, IL
Built 1979 Load: 32.4 t ADT: 75
GOOSE ROAD
FairOver: GOOSE CREEK
4 MI SE MILLEDGEVILL, Carroll, IL
Built 1977 Load: 32.4 t ADT: 75
S GRANDVIEW ROAD
FairOver: EAGLE CREEK
5 M NE MILLEDGEVILLE, Carroll, IL
Built 1977 Load: 32.4 t ADT: 25
SUNSHINE ROAD
FairOver: ELKHORN CREEK
3 M SE MILLEDGEVILLE, Carroll, IL
Built 1987 Load: 32.4 t ADT: 200
FAS 575
FairOver: MILLER CREEK
5M N NEWMANSVILLE, Cass, IL
Built 2010 Load: 32.4 t ADT: 500
TR 65A
FairOver: CLEAR CREEK
3 MI N OF HAGENER, Cass, IL
Built 1993 Load: 32.4 t ADT: 125
TR 48
FairOver: CLEAR CREEK
1.5M S BLUFF SPRING, Cass, IL
Built 1992 Load: 32.4 t ADT: 150
TR 67
FairOver: CLEAR CREEK
1.5 MI SW BLUFF SPRG, Cass, IL
Built 1983 Load: 32.4 t ADT: 150
OLD IL 125 (TR59)
FairOver: LOST CREEK
BLUFF SPRINGS, Cass, IL
Built 2002 Load: 32.4 t ADT: 125
TR 7
FairOver: INDIAN RUN
4 MI W CHANDLERVILLE, Cass, IL
Built 2001 Load: 32.4 t ADT: 50
GARNER RD.
FairOver: JOBS CREEK
1.5 MI NE VIRGINIA, Cass, IL
Built 1980 Load: 32.4 t ADT: 150
FAS 573
FairOver: LITTLE PANTHER CREEK
.5MI SO CHANDLERVILL, Cass, IL
Built 1990 Load: 32.4 t ADT: 150
TR 39
FairOver: LITTLE JOBS CREEK
3.5M S CHANDLERVILLE, Cass, IL
Built 2000 Load: 32.4 t ADT: 50
TR 83
FairOver: CREEK
2 MI S NEWMANSVILLE, Cass, IL
Built 2005 Load: 32.4 t ADT: 50
TR 28B
FairOver: CLEAR CREEK
4 M NW ARENZVILLE, Cass, IL
Built 2008 Load: 32.4 t ADT: 250
TR 133
FairOver: CLEAR CREEK
3.5 MI. SEHAGENER, Cass, IL
Built 1985 Load: 32.4 t ADT: 75
TR 135
FairOver: PRAIRIE CREEK
2MI SW HAGENER, Cass, IL
Built 1978 Load: 32.4 t ADT: 75
TR 12
FairOver: INDIAN CREEK
.44 mi N TR 147, Cass, IL
Built 1979 Load: 32.4 t ADT: 75
Showing 7,301-7,350 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.