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
CH 24
UnknownOver: I-70
1 MI NE OF JEWETT, Cumberland, IL
Built 1968 ADT: 23,100
TR 10
UnknownOver: I-57
1 MI S OF NEOGA, Cumberland, IL
Built 1964 ADT: 18,900
TR 27
UnknownOver: I-57
1 MI S COLES CO LINE, Cumberland, IL
Built 1964 ADT: 18,900
TR 39
UnknownOver: I-57
2 MI S COLES CO LINE, Cumberland, IL
Built 1964 ADT: 18,900
TR 68
UnknownOver: I-70
1.4MI NE EFF CO LINE, Cumberland, IL
Built 1968 ADT: 23,100
TR 134
UnknownOver: I-70
.5 MI NW JEWETT, Cumberland, IL
Built 1967 ADT: 23,100
TR 240 A
UnknownOver: I-70
2 MI NE OF GREENUP, Cumberland, IL
Built 1969 ADT: 23,500
TR 268
UnknownOver: I-70
2.5 MI W CLARK CO LI, Cumberland, IL
Built 1969 ADT: 23,500
I-70 (EB)
UnknownOver: FAS 1657
4.4MI E EFF CO LINE, Cumberland, IL
Built 1969 ADT: 250
I-70 (WB)
UnknownOver: FAS 1657
4.4MI E EFF CO LINE, Cumberland, IL
Built 1969 ADT: 250
I-70 (WB)
UnknownOver: IL 121 (FAP 773)
I-70 OVER IL 121, Cumberland, IL
Built 1969 ADT: 3,450
I-70 (EB)
UnknownOver: IL 121 (FAP 773)
I-70 OVER IL 121, Cumberland, IL
Built 1969 ADT: 3,450
TR 288
UnknownOver: I-70
1 MI W CLARK CO LINE, Cumberland, IL
Built 1970 ADT: 23,500
CH 3(FAS 1653)
UnknownOver: I-57
.25 MI NE SHELBY LIN, Cumberland, IL
Built 1963 ADT: 18,900
CNRL RR
UnknownOver: LINCOLN DR(MS 1230)
SW GREENUP, Cumberland, IL
Built 1900 ADT: 350
CNRL RR
UnknownOver: JEFFERSON ST(MS6020B
SW GREENUP, Cumberland, IL
Built 1900 ADT: 100
TR 5 RELOCATED
UnknownOver: I-74
NW FARMER CITY, De Witt, IL
Built 1970 ADT: 21,200
I-74 (EB)
UnknownOver: US 150 & NS RR(aband)
NW FARMER CITY, De Witt, IL
Built 1970 ADT: 1,000
I-74 (WB)
UnknownOver: US 150 & NS RR(aband)
NW FARMER CITY, De Witt, IL
Built 1970 ADT: 1,000
I-74 (EB)
UnknownOver: FAS 2495
N FARMER CITY, De Witt, IL
Built 1970 ADT: 500
I-74 (WB)
UnknownOver: FAS 2495
N FARMER CITY, De Witt, IL
Built 1970 ADT: 500
IL 54 (FAP 71)
UnknownOver: I-74
NE OF FARMER CITY, De Witt, IL
Built 1970 ADT: 21,500
IC RR
UnknownOver: TR 56
2 MI NE OF KENNY, De Witt, IL
Built 1900 ADT: 75
IC RR
UnknownOver: TR 60
2.5 MI NE KENNY, De Witt, IL
Built 1900 ADT: 50
IC RR
UnknownOver: US 51(FAP 708)
IN CLINTON, De Witt, IL
Built 1939 ADT: 4,450
IC RR
UnknownOver: IL 10(FAP 717)
W OF CLINTON, De Witt, IL
Built 1940 ADT: 1,850
IC RR
UnknownOver: IL 10/US 54(FAP 71)
IN CLINTON, De Witt, IL
Built 1933 ADT: 8,100
IC RR
UnknownOver: FAU 7307
WOODLAWN E OF LINCOL, De Witt, IL
Built 1900 ADT: 1,250
UNION PACIFIC RR
UnknownOver: ANNIE GLIDDEN RD
0.1 MI. S. OF IL 38, DeKalb, IL
Built 1971 ADT: 12,200
CNW RR
UnknownOver: SHABBONA GROVE RD
2 MI SE SHABBONA, DeKalb, IL
Built 1900 ADT: 375
IC RR
UnknownOver: ILL 72 FAP 553
IN GENOA, DeKalb, IL
Built 1932 ADT: 6,000
TR 22 TOWER RD
UnknownOver: I-88
1 MI E OGLE CO LINE, DeKalb, IL
Built 1974 ADT: 24,000
TR 42 WILLRETT RD
UnknownOver: I-88
2 MI E OGLE CO LINE, DeKalb, IL
Built 1974 ADT: 24,000
FAS 174 LANG RD
UnknownOver: I-88
3 MI E OGLE CO LINE, DeKalb, IL
Built 1974 ADT: 24,000
FAS 1112 UNIVERSIT
UnknownOver: I-88
5 MI E OGLE CO LINE, DeKalb, IL
Built 1974 ADT: 24,000
I-88 RAMP (GLIDDEN
UnknownOver: I-88
W EDGE OF DEKALB, DeKalb, IL
Built 1974 ADT: 24,000
S FIRST ST-DEKALB
UnknownOver: I-88
S EDGE DEKALB, DeKalb, IL
Built 1974 ADT: 24,000
I-88 WB
UnknownOver: ILL 23
S EDGE DEKALB, DeKalb, IL
Built 1974 ADT: 3,950
I-88 EB
UnknownOver: ILL 23
S EDGE DEKALB, DeKalb, IL
Built 1974 ADT: 3,950
FAP 324 - PEACE RD
UnknownOver: I-88
SE EDGE OF DEKALB, DeKalb, IL
Built 1974 ADT: 31,100
SOMONAUK RD FAS 96
UnknownOver: I-88
1 MI S CORTLAND, DeKalb, IL
Built 1974 ADT: 31,100
HINCKLEY RD TR 206
UnknownOver: I-88
2 MI W KANE CO, DeKalb, IL
Built 1974 ADT: 31,100
KESLINGER RD
UnknownOver: I-88
1 MI W KANE CO, DeKalb, IL
Built 1974 ADT: 31,100
I-88 RMP1072 (OASI
UnknownOver: I-88 E-W TOLLWAY
.5 MI. E OF ILL 23, DeKalb, IL
Built 1974 ADT: 24,000
UNION PACIFIC RR
UnknownOver: PEARL ST
0.1 MI S IL38/DEKALB, DeKalb, IL
Built 1966 ADT: 1,800
Pedestrian Walkway
UnknownOver: I-88
0.7 Mi E Shabbona Rd, DeKalb, IL
Built 2006 ADT: 24,000
I-57 (NB)
UnknownOver: FAP 323(US 36)
TUSCOLA, Douglas, IL
Built 1968 ADT: 8,000
I-57 (SB)
UnknownOver: FAP 323(US 36)
TUSCOLA, Douglas, IL
Built 1968 ADT: 8,000
IC RR
UnknownOver: US 36(FAP 323)
W EDGE OF TUSCOLA, Douglas, IL
Built 1938 ADT: 5,050
IL 133(FAP 749)
UnknownOver: I-57
ARCOLA, Douglas, IL
Built 1968 ADT: 20,300
Showing 1,551-1,600 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |