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 300(RUCH RD)
FairOver: STREAM
2.3 MI NE OAKLEY, Macon, IL
Built 1982 Load: 32.4 t ADT: 175
TR 57(CABIN RD)
FairOver: STREAM
3.25 MI NE OAKLEY, Macon, IL
Built 1983 Load: 32.4 t ADT: 50
TR 58(JOCKISCH RD)
FairOver: Trib Sangamon River
SW EDGE OF DECATUR, Macon, IL
Built 1984 Load: 32.4 t ADT: 50
TR 36(ROSEDALE RD)
FairOver: STREAM
3.5 MI NE BLUE MOUND, Macon, IL
Built 1983 Load: 32.4 t ADT: 50
TR 254(CONNOR'S RD
FairOver: STREAM
6 MI E MAROA, Macon, IL
Built 1983 Load: 32.4 t ADT: 50
TR 308(BRIGGS RD)
FairOver: FRIENDS CREEK DITCH
5 MI NE OF ARGENTA, Macon, IL
Built 1984 Load: 32.4 t ADT: 25
TR 276(DUNBAR RD)
FairOver: FRIENDS CREEK TRIB
2.3 MI SE OF ARGENTA, Macon, IL
Built 1984 Load: 32.4 t ADT: 50
TR 25A(PARR RD)
FairOver: FRIENDS CREEK
1.25 MI SE ARGENTA, Macon, IL
Built 1985 Load: 32.4 t ADT: 100
CH 30(FAS 552)
FairOver: SAND CREEK
2 MI W OF MT ZION, Macon, IL
Built 1986 Load: 32.4 t ADT: 4,650
TR 136A(CORNTHWAIT
FairOver: LONG GROVE CREEK
5 MI SE OF MACON, Macon, IL
Built 1984 Load: 32.4 t ADT: 75
TR 52A(BOODY RD)
FairOver: DRY BRANCH
4.2 MI E BLUE MOUND, Macon, IL
Built 1987 Load: 32.4 t ADT: 50
TR 74(HIBBARD RD)
FairOver: MOSQUITO CREEK
2.5 MI N OF MACON, Macon, IL
Built 1985 Load: 32.4 t ADT: 125
TR 110(JANVRIN RD)
FairOver: LAKE FORK CREEK
2 MILES W OF MAROA, Macon, IL
Built 1986 Load: 32.4 t ADT: 50
TR 259(HOGAN RD)
FairOver: FINLEY CREEK
4.8 MI W DALTON CITY, Macon, IL
Built 1987 Load: 32.4 t ADT: 75
TR 227(PUBLIC RD)
FairOver: SPRING CREEK
2 MI W OF BOODY, Macon, IL
Built 1988 Load: 32.4 t ADT: 75
TR 247(DAMERY RD)
FairOver: MOSQUITO CREEK
3 MI N BLUE MOUND, Macon, IL
Built 1987 Load: 32.4 t ADT: 100
TR 227(PUBLIC RD)
FairOver: DRAINAGE DITCH
2 MI W OF BOODY, Macon, IL
Built 1988 Load: 32.4 t ADT: 75
TR 296(ILLINI RD)
FairOver: LONG CREEK
1.7 MI SE OF OAKLEY, Macon, IL
Built 1986 Load: 32.4 t ADT: 50
TR 259A(BETHEL RD)
FairOver: MOSQUITO CREEK
2 MI NE BLUE MOUND, Macon, IL
Built 1987 Load: 32.4 t ADT: 35
TR 255(MOSQUITO CR
FairOver: STREAM
2 MI N BLUE MOUND, Macon, IL
Built 1989 Load: 32.4 t ADT: 25
FAS 548 (CH 58)
FairOver: LAKE FORK CREEK
4 MI W OF MAROA, Macon, IL
Built 1988 Load: 32.4 t ADT: 200
TR 114C(RILEY RD)
FairOver: LONG GROVE CREEK
3.2 MI SE OF MACON, Macon, IL
Built 1989 Load: 32.4 t ADT: 25
TR 42(NEVADA RD)
FairOver: MOSQUITO CREEK
3.4 MI NE BLUE MOUND, Macon, IL
Built 1989 Load: 32.4 t ADT: 100
TR 216(MIDWAY RD)
FairOver: KICKAPOO CREEK
3 MI N OF OREANA, Macon, IL
Built 1989 Load: 32.4 t ADT: 50
TR 57(CABIN RD)
FairOver: STREAM
4.5 MI SE OF OREANA, Macon, IL
Built 1990 Load: 32.4 t ADT: 225
TR 19(EMERY RD)
FairOver: STEVENS CREEK
.5 MI W OF EMERY, Macon, IL
Built 1991 Load: 32.4 t ADT: 50
TR 63A(PIN OAK LN)
FairOver: STREAM
NE OF DECATUR, Macon, IL
Built 1990 Load: 32.4 t ADT: 100
FAS 1547
FairOver: LONG CREEK
1.4 MI NE LONG CREEK, Macon, IL
Built 1997 Load: 32.4 t ADT: 2,200
TR 30A(STRAWN RD)
FairOver: DRAINAGE DITCH
3 MI W WARRENSBURG, Macon, IL
Built 1991 Load: 32.4 t ADT: 20
TR 270(CEMETERY RD
FairOver: FRIENDS CREEK
1 MI E OF ARGENTA, Macon, IL
Built 1991 Load: 32.4 t ADT: 50
TR 31A(JORDAN RD)
FairOver: FRIENDS CREEK
3 MI SE ARGENTA, Macon, IL
Built 1991 Load: 32.4 t ADT: 125
TR 22
FairOver: LAKE FORK CREEK
2.3 MI W OF MAROA, Macon, IL
Built 1992 Load: 32.4 t ADT: 25
TR 17
FairOver: STREAM
4.3 MI NW WARRENSBUR, Macon, IL
Built 1993 Load: 32.4 t ADT: 50
TR 20 A
FairOver: STREAM
1.2 MI E OF NIANTIC, Macon, IL
Built 1995 Load: 32.4 t ADT: 75
FAS 556 (CH 28)
FairOver: TRIB SANGAMON RIVER
SW EDGE OF DECATUR, Macon, IL
Built 2000 Load: 32.4 t ADT: 650
TR 23 A(NEWBURG RD
FairOver: TRIB TO FRIENDS CR
1.5 MI E OF ARGENTA, Macon, IL
Built 1999 Load: 32.4 t ADT: 10
TR 308 C
FairOver: STREAM
3.4 MI NE ARGENTA, Macon, IL
Built 2000 Load: 32.4 t ADT: 25
TR 44(WEST ST RD)
FairOver: POINT SLOUGH
3 MI S WARRENSBURG, Macon, IL
Built 2000 Load: 32.4 t ADT: 50
TR 73
FairOver: Tirib Long Pt Slough
2.5 MI NW OF NIANTIC, Macon, IL
Built 1999 Load: 32.4 t ADT: 25
TR 17(POLAND RD)
FairOver: SOUTH FORK CREEK
3.2 MI N WARRENSBURG, Macon, IL
Built 2002 Load: 32.4 t ADT: 25
CH 18
FairOver: DRAINAGE DITCH
6.1 MI SW OF MAROA, Macon, IL
Built 2002 Load: 32.4 t ADT: 125
CH 67(JACOBS RD)
FairOver: LONG GROVE CREEK
4 MI SE OF MACON, Macon, IL
Built 2002 Load: 32.4 t ADT: 125
FAS 548 (CH 58)
FairOver: LAKE FORK CREEK
1.25 MI W MAROA, Macon, IL
Built 2002 Load: 32.4 t ADT: 375
FAS 556(CH 28)
FairOver: TRIB TO SANGAMON RIV
3.7 MI NW BOODY, Macon, IL
Built 2003 Load: 32.4 t ADT: 450
CH 27 (FAS 551)
FairOver: TRIB TO SANGAMON
2.2 MI SW HARRISTOWN, Macon, IL
Built 2003 Load: 32.4 t ADT: 300
TR 215(ELWIN RD)
FairOver: SPRING CREEK
1 MI N OF BOODY, Macon, IL
Built 2004 Load: 32.4 t ADT: 100
TR 25 WISE ROAD
FairOver: SOUTH FORK CREEK
3.6 MI NW WARRENSBUR, Macon, IL
Built 2005 Load: 32.4 t ADT: 20
TR 54 (W WISE RD)
FairOver: DRAIN DITCH
4.3 MI NW WARRENSBUR, Macon, IL
Built 2006 Load: 32.4 t ADT: 20
FAU 7449 (CH 7)
FairOver: FINLEY CREEK
N MT ZION, Macon, IL
Built 2012 Load: 32.4 t ADT: 7,000
FAS 544/CH25
FairOver: STREAM
1 MI N ARGENTA, Macon, IL
Built 2012 Load: 32.4 t ADT: 600
Showing 8,751-8,800 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.