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-444
FairOver: TWO MILE CREEK
0.25 MI SW MARLOW, Jefferson, IL
Built 1989 Load: 32.4 t ADT: 100
TR-239
FairOver: HARPER CREEK
1 MI NW MT VERNON, Jefferson, IL
Built 1989 Load: 32.4 t ADT: 100
TR-372
FairOver: DODDS CREEK
3 MI W OPPYKE, Jefferson, IL
Built 1993 Load: 32.4 t ADT: 275
TR 507
FairOver: HURRICANE CREEK
2 MI S SCHELLER, Jefferson, IL
Built 1998 Load: 32.4 t ADT: 75
TR 191
FairOver: 7 MI CRK
2.5 MI NE MT VERNON, Jefferson, IL
Built 1995 Load: 32.4 t ADT: 50
TR 369A
FairOver: AUXIER CRK
2 MI NNW BELLE RIVE, Jefferson, IL
Built 1997 Load: 32.4 t ADT: 25
TR 532A
FairOver: CREEK
3.5 MI E HARMONY, Jefferson, IL
Built 2000 Load: 32.4 t ADT: 75
TR 75
FairOver: WEST CREEK
1.5 MI WSW DIX, Jefferson, IL
Built 2000 Load: 32.4 t ADT: 50
TR 362
FairOver: ATCHISON CREEK
1.5 MI E BONNIE, Jefferson, IL
Built 2000 Load: 32.4 t ADT: 350
TR 359
FairOver: AUXIER CREEK
2.5 MI NW BELLE RIVE, Jefferson, IL
Built 2001 Load: 32.4 t ADT: 25
TR 145
FairOver: SNOW CREEK
1.75 MI SW BOYD, Jefferson, IL
Built 2001 Load: 32.4 t ADT: 25
TR 418
FairOver: HORSE CREEK
1 MI SO MAR CO LINE, Jefferson, IL
Built 2002 Load: 32.4 t ADT: 50
TR 30
FairOver: HURRICANE CREEK
2.5 MI S SCHELLER, Jefferson, IL
Built 2004 Load: 32.4 t ADT: 50
TR-550
FairOver: SUGAR CAMP CREEK
7.5 MI S BELLE RIVE, Jefferson, IL
Built 1984 Load: 32.4 t ADT: 50
FAS-789 (CH-3)
FairOver: PUNCHEON CREEK
3.5 MI N MARLOW, Jefferson, IL
Built 1987 Load: 32.4 t ADT: 1,000
TR-105
FairOver: TRIB HORSE CREEK
6 MI N BLUFORD, Jefferson, IL
Built 1987 Load: 32.4 t ADT: 25
TR-227
FairOver: NORFORK-SOUTHERN RR
0.5 MI N MT VERNON, Jefferson, IL
Built 1994 Load: 32.4 t ADT: 1,250
TR 13
FairOver: DEARCY CREEK
2.0 M N E OF KANE, Jersey, IL
Built 1977 Load: 32.4 t ADT: 50
CH 3
FairOver: UNKNOWN CREEK
0.5 MILES SOF KEMPER, Jersey, IL
Built 1978 Load: 32.4 t ADT: 275
TR 13
FairOver: PHILS CR
2MI NE KANE, Jersey, IL
Built 1978 Load: 32.4 t ADT: 50
TR 132
FairOver: MILL CREEK
3.0 MI E ELSAH, Jersey, IL
Built 1980 Load: 32.4 t ADT: 375
TR 10
FairOver: TRIB. OF MACOUPIN CK
2.3 M W KEMPER, Jersey, IL
Built 1984 Load: 32.4 t ADT: 50
TR 99
FairOver: BRANCH OF PIASA CK
1 MI S RTE 16, Jersey, IL
Built 1987 Load: 32.4 t ADT: 75
TR 94
FairOver: S. FORK OTTER CREEK
1.8MI W OTTERVILLE, Jersey, IL
Built 2003 Load: 32.4 t ADT: 225
CH 23
FairOver: TRIB TO MILL CK
2.5 Mi E of Elsah, Jersey, IL
Built 1983 Load: 32.4 t ADT: 575
TR 185
FairOver: LITTLE PIASA CREEK
4M SW BRIGHTON, Jersey, IL
Built 1982 Load: 32.4 t ADT: 50
TR 81
FairOver: OTTER CREEK
2.5 M W OTTERVILLE, Jersey, IL
Built 1995 Load: 32.4 t ADT: 100
TR 21
FairOver: DE ARCY CREEK
2.8 M N JERSEYVILLE, Jersey, IL
Built 1985 Load: 32.4 t ADT: 150
FAS 745
FairOver: PHILS CREEK
0.6 MI N ILL 16, Jersey, IL
Built 1982 Load: 32.4 t ADT: 750
CH 23
FairOver: MILL CREEK
1.25 M E OF ELSAH, Jersey, IL
Built 1984 Load: 32.4 t ADT: 575
CH 7
FairOver: OTTER CREEK
2.5 MI SW JERSEYVILL, Jersey, IL
Built 1991 Load: 32.4 t ADT: 425
MILL ST.
FairOver: CREEK
ELSAH, Jersey, IL
Built 1984 Load: 32.4 t ADT: 875
IRISH HOLLOW RD/TR
FairOver: IRISH HOLLOW CREEK
6 MI. W. ELIZABETH, Jo Daviess, IL
Built 1996 Load: 32.4 t ADT: 75
E HOWARDVILLE ROAD
FairOver: YELLOW CREEK
3MILES NE STOCKTON, Jo Daviess, IL
Built 1975 Load: 32.4 t ADT: 250
EAST BETHEL ROAD
FairOver: RUSH CREEK
4.5 M SE ELIZEBTH, Jo Daviess, IL
Built 1976 Load: 32.4 t ADT: 200
NORTH MINER ROAD
FairOver: BR OF GALENA RIVER
2 MILES E GALENA, Jo Daviess, IL
Built 1977 Load: 32.4 t ADT: 50
N TIGER WHIP ROAD
FairOver: YELLOW CREEK
4 MI NE STOCKTON, Jo Daviess, IL
Built 1978 Load: 32.4 t ADT: 100
TOWNSHIP ROAD 28
FairOver: MAZELLE CREEK
5 MI NW HANOVER, Jo Daviess, IL
Built 1978 Load: 32.4 t ADT: 100
SKENE ROAD
FairOver: RUSH CREEK
1.5 M NE DERINDA CEN, Jo Daviess, IL
Built 1980 Load: 32.4 t ADT: 75
S IRISH HOLLOW ROA
FairOver: IRISH HOLLOW CREEK
4.5 M W OF ELIZABETH, Jo Daviess, IL
Built 1983 Load: 32.4 t ADT: 75
TR 80
FairOver: APPLE RIVER
3 MI SO OF HANOVER, Jo Daviess, IL
Built 1985 Load: 32.4 t ADT: 75
WEST CULVERT ROAD
FairOver: E FORK GALENA RIVER
2.5 M W SCALES MOUND, Jo Daviess, IL
Built 1981 Load: 32.4 t ADT: 75
HILL ROAD (TR 237)
FairOver: LITTLE RUSH CREEK
4 MI. SE. OF HANOVER, Jo Daviess, IL
Built 1987 Load: 32.4 t ADT: 25
WEST BUCKHILL ROAD
FairOver: GALENA RIVER
1.5 MI NE GALENA, Jo Daviess, IL
Built 1986 Load: 32.4 t ADT: 75
N. BIRKBECK ROAD
FairOver: GALENA RIVER
4.5 MI N OF GALENA, Jo Daviess, IL
Built 1988 Load: 32.4 t ADT: 50
FAS 924
FairOver: LICK CREEK OVERFLOW
NE1/4 SEC 8 T12S,R2E, Johnson, IL
Built 1962 Load: 32.4 t ADT: 175
FAS 924
FairOver: LICK CR
E 1/2 SEC 6 T12S R2E, Johnson, IL
Built 1974 Load: 32.4 t ADT: 375
TR 164
FairOver: CEDAR CREEK
NW1/4 SEC10 T12S,R4E, Johnson, IL
Built 1983 Load: 32.4 t ADT: 100
FAS 927
FairOver: TRIB TO CEDAR CREEK
0.5 MI NW OF SIMPSON, Johnson, IL
Built 1990 Load: 32.4 t ADT: 450
TR 111
FairOver: TRIB TO LITTLE CACHE
1 MI N VIENNA, Johnson, IL
Built 1993 Load: 32.4 t ADT: 225
Showing 8,301-8,350 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.