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
CSX TRANS INC.
UnknownOver: IL 1/FAP 332A
N EDGE MILFORD RR BR, Iroquois, IL
Built 1939 ADT: 2,450
US 24
UnknownOver: I 57
GILMAN INTERCHANGE, Iroquois, IL
Built 1967 ADT: 18,100
ILL 54
UnknownOver: I 57
ONARGA INTERCHANGE, Iroquois, IL
Built 1967 ADT: 16,400
DANFORTH RD FAS 33
UnknownOver: I-57
4.59 MI S OF ILL 116, Iroquois, IL
Built 1967 ADT: 18,100
FAS 334 /C.H.9
UnknownOver: FAI 57
BUCKLEY INTERCHANGE, Iroquois, IL
Built 1968 ADT: 17,500
FAS 335W/CH 10
UnknownOver: FAI 57
6.45 M S BUCKLEY INT, Iroquois, IL
Built 1968 ADT: 17,600
CH 47 / 1200 N Rd
UnknownOver: FAI-57
2.62 MI S ONARGA INT, Iroquois, IL
Built 1968 ADT: 17,500
TR 155
UnknownOver: I-57
2.0 Mi N of US 24, Iroquois, IL
Built 1967 ADT: 18,100
CH 29
UnknownOver: I-57
3.0 M S OF CHEB INTR, Iroquois, IL
Built 1965 ADT: 19,100
K3,BEAVERVILLE & S
UnknownOver: US 52
8.28 MI E OF ILL 1, Iroquois, IL
Built 1935 ADT: 1,300
ILL 116 ASHKUM INT
UnknownOver: I 57
ASHKUM INTER, Iroquois, IL
Built 1967 ADT: 18,400
TR 89
UnknownOver: I 57
2.47 MI S ASHKUM INT, Iroquois, IL
Built 1967 ADT: 18,100
TR 26A
UnknownOver: I-57
7.11 MI S ONARGA INT, Iroquois, IL
Built 1968 ADT: 17,500
TWP RD 35
UnknownOver: I 57
4.27 M S CHEBANSE IT, Iroquois, IL
Built 1965 ADT: 19,100
TWP RD 49A
UnknownOver: I 57
1.59 MI S CLIFTON IN, Iroquois, IL
Built 1966 ADT: 18,400
TR 58A
UnknownOver: I 57
1.17 MI S GILMAN INT, Iroquois, IL
Built 1967 ADT: 16,400
TWP RD 95
UnknownOver: I 57
3.48 M S OF ILL 116, Iroquois, IL
Built 1967 ADT: 18,100
TWP RD 109
UnknownOver: I 57
5.59 MI S ASHKUM INT, Iroquois, IL
Built 1967 ADT: 18,100
TWP RD 269
UnknownOver: I-57
4.67 MI S ONARGA INT, Iroquois, IL
Built 1968 ADT: 17,500
TWP RD 327
UnknownOver: FAI 57
1.07 MI S BUCKLEY IN, Iroquois, IL
Built 1968 ADT: 17,600
TR 349
UnknownOver: FAI 57
4.1 M S BUCKLEY INTR, Iroquois, IL
Built 1968 ADT: 17,600
FAS 321 (CH 4)
UnknownOver: I-57
CLIFTON INTER, Iroquois, IL
Built 1965 ADT: 19,100
FAS 1322 (CH 37)
UnknownOver: I-57
CHEBANSE INT, Iroquois, IL
Built 1965 ADT: 19,400
KB&S RR
UnknownOver: TR 91A
1.5MI SE DONOVAN, Iroquois, IL
Built 1900 ADT: 75
UNION PACIFIC RR
UnknownOver: ILL 13 & 127
0.2 MI N JACKSON SQ, Jackson, IL
Built 1996 ADT: 6,200
CH 11
UnknownOver: C. ORCHARD CK-TR 362
N LINE SEC 2-9-1, Jackson, IL
Built 1968 ADT: 10
FAS 919-CH 12
UnknownOver: TR 338
1.6 M SE CH 25&CH 29, Jackson, IL
Built 1986 ADT: 175
UNION PACIFIC RR
UnknownOver: US RTE 51
US 51 IN DESOTO, Jackson, IL
Built 1903 ADT: 5,600
MO PAC RR
UnknownOver: ILL RTE 149
WCL OF MURPHYSBORO, Jackson, IL
Built 1900 ADT: 3,150
UP UNION PACIFIC R
UnknownOver: BUS RTE 13
N 14TH - MURPHYSBORO, Jackson, IL
Built 1900 ADT: 2,150
MOPAC R.R.
UnknownOver: HICKORY ST 6060
HICKORY ST IN DESOTO, Jackson, IL
Built 1900 ADT: 450
MO PAC RR
UnknownOver: TR 248
0.75 MI N OF IL 149, Jackson, IL
Built 1988 ADT: 250
SIU PED OVERHEAD(N
UnknownOver: US 51 - FAP 718
CARBONDALE AT SIU, Jackson, IL
Built 1970 ADT: 13,100
SO. SIU PED OVERPA
UnknownOver: US 51-FAP 718
CARBONDALE SIU, Jackson, IL
Built 1988 ADT: 8,900
CN/ICG RR
UnknownOver: MILL STREET
E OF US 51 NB-CDALE, Jackson, IL
Built 2000 ADT: 2,950
I 57 NB
UnknownOver: FAI-64 EB
TRI-LEVEL S MT VERON, Jefferson, IL
Built 1968 ADT: 14,400
I 57 NB
UnknownOver: FAP-726 & UN PACF RR
2 MI S ILL-15 INT, Jefferson, IL
Built 1968 ADT: 2,550
I 57 SB
UnknownOver: FAP-726 & UN PACF RR
2 MI S ILL-15 INT, Jefferson, IL
Built 1968 ADT: 2,550
FAP-821 (ILL-15)
UnknownOver: FAI-57
I-57 INTERCHANGE, Jefferson, IL
Built 1968 ADT: 42,600
FAS-826 (CH-10)
UnknownOver: FAI-57
2 MI N ILL-15, Jefferson, IL
Built 1968 ADT: 20,700
TR-1A
UnknownOver: FAI-57
4 MI N ILL-15, Jefferson, IL
Built 1967 ADT: 20,700
FAS-2830(CH-13)
UnknownOver: FAI-57
BONNIE, Jefferson, IL
Built 1964 ADT: 37,500
W LINCOLN ST
UnknownOver: FAI-57
.5 MI N DIX INT, Jefferson, IL
Built 1967 ADT: 25,000
TR-101
UnknownOver: FAI-57
1.5 MI S DIX INT, Jefferson, IL
Built 1967 ADT: 20,700
TR-379
UnknownOver: FAI-57
4 MI S ILL-15, Jefferson, IL
Built 1965 ADT: 37,500
FAI-57/RAMP-1067
UnknownOver: FAI-57 NB
SE TRI-LEVEL MT VERN, Jefferson, IL
Built 1968 ADT: 37,500
I 64 WB
UnknownOver: FAI-57 SB
NW TRI-LEVEL MT VERN, Jefferson, IL
Built 1968 ADT: 20,700
FAI-57/RAMP 1579
UnknownOver: FAI-64 WB
NW TRI-LEVEL MT VERN, Jefferson, IL
Built 1968 ADT: 28,300
FAP-849 (ILL-142)
UnknownOver: FAI-64
2.5 MI SE MT VERNON, Jefferson, IL
Built 1971 ADT: 12,700
TR-412
UnknownOver: FAI-64
3.8 MI E ILL-37, Jefferson, IL
Built 1971 ADT: 12,700
Showing 2,001-2,050 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 |