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
WB US 34
UnknownOver: TR 162 (120th St)
4.5 M E OF MONMOUTH, Warren, IL
Built 2021 ADT: 25
EB US 34
UnknownOver: TR 162 (120th St)
4.5 M E OF MONMOUTH, Warren, IL
Built 2021 ADT: 25
US 34
UnknownOver: TR 206 (150TH ST)
NW 1/4 SEC27 T11NR1W, Warren, IL
Built 1985 ADT: 75
US 34
UnknownOver: SBI 8 (OLD US 34)
3 MI E OF JCT 67&34, Warren, IL
Built 1985 ADT: 225
AT&SF RR (004691Y)
UnknownOver: FAS 407-CH 15
SW-33-T11NR1W, Warren, IL
Built 1907 ADT: 1,350
AT&SF RR (004696H)
UnknownOver: TR 126
SE-10-T10NR2W, Warren, IL
Built 1907 ADT: 150
ATSF(004701C)
UnknownOver: US 67-FAP 310
SE-19-T10NR2W, Warren, IL
Built 1995 ADT: 4,500
Addieville Rd - CH
UnknownOver: FAI 64
3 M E ILL 177, Washington, IL
Built 1969 ADT: 29,300
Covington Rd - CH
UnknownOver: FAI 64
6 M E ILL 177, Washington, IL
Built 1969 ADT: 29,300
ILL 177
UnknownOver: FAI 64
E EDGE OKAWVILLE, Washington, IL
Built 1970 ADT: 29,300
Waterworks Rd - TR
UnknownOver: FAI 64
0.75 NW OKAWVILLE, Washington, IL
Built 1970 ADT: 31,000
ILL 127
UnknownOver: FAI-64
2.5 MI N NASHVILLE, Washington, IL
Built 1971 ADT: 28,000
I-64 EB
UnknownOver: Prairie Rd,Abandoned UPR
1.92 mi E of IL 127, Washington, IL
Built 1972 ADT: 10
I-64 WB
UnknownOver: Prairie Rd,Abandoned UPR
1.93 mi E of IL 127, Washington, IL
Built 1972 ADT: 10
FAS 788 - CO HWY 1
UnknownOver: FAI 64
3.74 MI S HOYLETON, Washington, IL
Built 1972 ADT: 28,000
TOWER RD - TR 236
UnknownOver: FAI 64
0.98 MI N RICHVIEW, Washington, IL
Built 1972 ADT: 28,000
FAI 64 EB
UnknownOver: US 51
1.39 MI W CO LINE, Washington, IL
Built 1971 ADT: 2,350
FAI 64 WB
UnknownOver: US 51
1.38 MI W CO LINE, Washington, IL
Built 1971 ADT: 5,150
ILL 177
UnknownOver: US 51 - FAP 322
0.5MI E IRVINGTON, Washington, IL
Built 1994 ADT: 5,150
TR-320
UnknownOver: FAI-64
3.5 MI E ILL-242, Wayne, IL
Built 1971 ADT: 11,000
FAP-776 (ILL-242)
UnknownOver: FAI-64
.75 MI N HAMILTN C L, Wayne, IL
Built 1972 ADT: 11,000
FAS-1879 (CH-13)
UnknownOver: FAI-64
1.5 MI E JEFFERSN CL, Wayne, IL
Built 1974 ADT: 11,700
TR-134
UnknownOver: FAI-64
4.3 MI E JEFFERSN CL, Wayne, IL
Built 1974 ADT: 11,700
TR-202
UnknownOver: FAI-64
1 MI W ILL 242 INT, Wayne, IL
Built 1974 ADT: 11,700
TR-480
UnknownOver: FAI-64
2.5 MI E US-45 INT, Wayne, IL
Built 1974 ADT: 12,000
CH-6
UnknownOver: FAI-64
4.5 MI E US-45 INT, Wayne, IL
Built 1972 ADT: 12,000
FAS 2812
UnknownOver: FAI-64
5.5 MI E US-45 INT, Wayne, IL
Built 1974 ADT: 12,000
FAI-64 EB
UnknownOver: TR-356
5 MI E ILL-242 INT, Wayne, IL
Built 1974 ADT: 50
FAI-64 WB
UnknownOver: TR-356
5 MI E ILL-242 INT, Wayne, IL
Built 1974 ADT: 50
FAI-64 WB
UnknownOver: FAP-88 (US-45)
US-45 N MILL SHOALS, Wayne, IL
Built 1974 ADT: 2,700
FAI-64 EB
UnknownOver: FAP-88 (US-45)
US-45 N MILL SHOALS, Wayne, IL
Built 1974 ADT: 2,700
I 64 EB
UnknownOver: ILL-1 & RR ABANDONED
ILL-1 INTERCHANGE, White, IL
Built 1969 ADT: 5,800
I 64 WB
UnknownOver: ILL-I & RR ABANDONED
ILL-1 INTERCHANGE, White, IL
Built 1969 ADT: 5,800
I 64 EB
UnknownOver: TR-422 & WABASH RV
SE GRAYVILLE, White, IL
Built 1967 ADT: 25
I 64 WB
UnknownOver: TR-422 & WABASH RV
SE GRAYVILLE, White, IL
Built 1967 ADT: 25
TR-282
UnknownOver: FAI-64
6.2 MI W ILL-1, White, IL
Built 1972 ADT: 12,200
FAS-815 (CH-20)
UnknownOver: FAI-64
BURNT PRAIRIE INT, White, IL
Built 1972 ADT: 12,200
TR-214
UnknownOver: FAI-64
10 MI W ILL-1, White, IL
Built 1975 ADT: 12,200
TR-254
UnknownOver: FAI-64
8 MI W ILL-1, White, IL
Built 1972 ADT: 12,200
FAS-1884 (CH-13)
UnknownOver: FAI-64
4 MI W ILL-1, White, IL
Built 1972 ADT: 12,200
TR-394
UnknownOver: FAI-64
2 MI W ILL-1, White, IL
Built 1972 ADT: 12,200
UP RR
UnknownOver: US 30
1.0 MI E JCT ILL 136, Whiteside, IL
Built 1957 ADT: 5,550
FAS 2184 CORDOVA R
UnknownOver: I-88
2.5 MI. W.ERIE, Whiteside, IL
Built 1975 ADT: 12,500
CH 21 SAND RD
UnknownOver: I-88 & STREAM
2.5 MI. NW. ERIE, Whiteside, IL
Built 1975 ADT: 12,500
FAS 1225 ALBANY RD
UnknownOver: I-88
2.0 MI. N. ERIE, Whiteside, IL
Built 1975 ADT: 13,100
CH 17 WILMOT RD
UnknownOver: I-88
3.0 MI. NE. ERIE, Whiteside, IL
Built 1975 ADT: 13,100
I-88 EB
UnknownOver: TR 136 A / HENRY RD
1.5 MI W ILL 78, Whiteside, IL
Built 1975 ADT: 75
I-88 WB
UnknownOver: TR 136 A / HENRY RD
1.5 MI W ILL 78, Whiteside, IL
Built 1975 ADT: 75
IL 78
UnknownOver: I-88
2 MI W LYNDON, Whiteside, IL
Built 1974 ADT: 12,600
CH 37 LYNDON RD
UnknownOver: I-88
.5 MI N LYNDON, Whiteside, IL
Built 1974 ADT: 12,600
Showing 3,701-3,750 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 |