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
N&W RR
UnknownOver: FAU 8180 WESTGATE
NW WESTGATE ST J'VLE, Morgan, IL
Built 1977 ADT: 5,800
B&N RR
UnknownOver: TR 19
1 M S ARENZVILLE, Morgan, IL
Built 1900 ADT: 50
N&W RR
UnknownOver: TR 78
1MI SO ILL 104, Morgan, IL
Built 1900 ADT: 50
IC&G RR
UnknownOver: TR 316
1.8 M NW FRANKLIN, Morgan, IL
Built 1900 ADT: 50
TR 73A-MCNEAL RD
UnknownOver: I-39 & US 51
2.5 MI N OF ILL 72, Ogle, IL
Built 1980 ADT: 32,800
I-39 & US 51 SB
UnknownOver: FAP 553(IL 72)
3.5 MI S WINN. CO LN, Ogle, IL
Built 1981 ADT: 4,500
I-39 & US 51 NB
UnknownOver: FAP 553(IL 72)
3.5 MI S WINN. CO LN, Ogle, IL
Built 1981 ADT: 4,500
BIG MOUND RD
UnknownOver: I-39 & US 51
1.5 MI S OF ILL 72, Ogle, IL
Built 1980 ADT: 32,200
LINDENWOOD RD
UnknownOver: I-39 & US 51
3 MI S OF ILL 72, Ogle, IL
Built 1980 ADT: 32,200
MOWERS RD
UnknownOver: I-39 & US 51
1 MI N OF ILL 64, Ogle, IL
Built 1980 ADT: 32,200
ILL 64
UnknownOver: I-39 & US 51
4 MI. W OF DEKALB CO, Ogle, IL
Built 1980 ADT: 32,200
BETHEL RD
UnknownOver: I-39 & US 51
1 MI S OF ILL 64, Ogle, IL
Built 1980 ADT: 29,600
TWOMBLY RD
UnknownOver: I-39 & US 51
1 MI N OF IL 38, Ogle, IL
Built 1980 ADT: 29,600
ILL 38
UnknownOver: I-39 & US 51
2 MI E OF ROCHELLE, Ogle, IL
Built 1980 ADT: 29,600
CRESTON RD
UnknownOver: I-39 & US 51
1.5 MI E OF ROCHELLE, Ogle, IL
Built 1980 ADT: 29,100
I-39 & US 51 SB
UnknownOver: I-88(E-W TOLLWAY)
1 MI N OF LEE CO.LN., Ogle, IL
Built 1981 ADT: 18,600
I-39 & US 51 NB
UnknownOver: I-88(E-W TOLLWAY)
1 MI N OF LEE CO.LN., Ogle, IL
Built 1981 ADT: 19,900
RITCHIE RD
UnknownOver: I-39 & US 51
2 MI E OF ROCHELLE, Ogle, IL
Built 1980 ADT: 19,500
IVY RD
UnknownOver: I-39 & US 51
2.5 MI N OF ILL 64, Ogle, IL
Built 1980 ADT: 32,200
IL 251
UnknownOver: IL38,CNW&BN RR&1 AVE
IN ROCHELLE, Ogle, IL
Built 1981 ADT: 1,950
STEWARD RD
UnknownOver: BNSF RAILROAD
1.2MI E OF IL251, Ogle, IL
Built 2010 ADT: 750
DM&E RR
UnknownOver: ILL 2
N EDGE OF BYRON, Ogle, IL
Built 1935 ADT: 7,600
CNW RR
UnknownOver: ILL 2
IN BYRON, Ogle, IL
Built 1935 ADT: 7,600
CNW RR
UnknownOver: ILL 72
.53 MI SE BYRON, Ogle, IL
Built 1933 ADT: 6,200
CNW RR
UnknownOver: TR 270A
.5 MI SE BYRON, Ogle, IL
Built 1941 ADT: 875
I-88 EB E-W TOLLW
UnknownOver: ILL 251
.5 MI S ROCHELLE, Ogle, IL
Built 1974 ADT: 7,150
I-88 WB E-W TOLLWA
UnknownOver: ILL 251
.5 MI S ROCHELLE, Ogle, IL
Built 1974 ADT: 5,800
STEWARD RD (FAU545
UnknownOver: I-88 (E-W TOLLWAY)
.7 MI E OF ILL 251, Ogle, IL
Built 1974 ADT: 18,600
I-88 EB E-W TOLLWA
UnknownOver: FAU5458,CARON&BN RR
1.2 MI E OF ILL 251, Ogle, IL
Built 1974 ADT: 750
I-88 WB E-W TOLLWA
UnknownOver: FAU5458,CARON&BN RR
1.2 MI E OF ILL 251, Ogle, IL
Built 1974 ADT: 750
TR 372 MULFORD RD
UnknownOver: I-88 (E-W TOLLWAY)
2 MI E ROCHELLE, Ogle, IL
Built 1974 ADT: 19,900
TR 374 LOCUST RD
UnknownOver: I-88 (E-W TOLLWAY)
3 MI E OF ROCHELLE, Ogle, IL
Built 1974 ADT: 19,900
CH 18 WOODLAWN RD
UnknownOver: I-88 (E-W TOLLWAY)
1 MI W DEKALB CO, Ogle, IL
Built 1974 ADT: 19,900
US 24 & ILL 9 (NB)
UnknownOver: KJRY RR & OLD SBI 9
1 MI E OF MAPLETON, Peoria, IL
Built 1955 ADT: 1,150
ILL 78
UnknownOver: I-74
5 MI W OF BRIMFIELD, Peoria, IL
Built 1967 ADT: 15,400
ILL 116
UnknownOver: BNSF & UPRR KICKAPOO
HARMON HIGHWAY, Peoria, IL
Built 1935 ADT: 1,900
KICKAPOO-EDWARDS R
UnknownOver: I-74
KICKAPOO INTERCHANGE, Peoria, IL
Built 1963 ADT: 21,100
KOERNER ROAD(CH47R
UnknownOver: I-74
2 MI W OF PEORIA, Peoria, IL
Built 1963 ADT: 21,100
TR 124 (1000 Dolla
UnknownOver: I-74
4 MI W OF KICKAPOO, Peoria, IL
Built 1967 ADT: 18,400
GILLES RD
UnknownOver: I-74
1.5 MI E OF KICKAPOO, Peoria, IL
Built 1963 ADT: 21,100
HEINZ ROAD
UnknownOver: I-74
3 MI W OF PEORIA, Peoria, IL
Built 1963 ADT: 21,100
BELL SCHOOL RD
UnknownOver: I-74
S JCT US150-ILL78, Peoria, IL
Built 1968 ADT: 17,500
WB I-74
UnknownOver: CH R23
S OF BRIMFIELD, Peoria, IL
Built 1968 ADT: 700
EB I-74
UnknownOver: CH23R
S OF BRIMFIELD, Peoria, IL
Built 1968 ADT: 700
MAHER RD-CH 25R
UnknownOver: I-74
BRIMFIELD INTERCH., Peoria, IL
Built 1968 ADT: 18,400
WB I-74
UnknownOver: TR 119
3.5 MI W OF KICKAPOO, Peoria, IL
Built 1967 ADT: 350
EB I-74
UnknownOver: TR 119
3.5 MI W OF KICKAPOO, Peoria, IL
Built 1967 ADT: 350
SB ILL 6
UnknownOver: WB I-74
2 MI W STERLING AVE, Peoria, IL
Built 1978 ADT: 21,100
FAI 474 RMP 109
UnknownOver: WB I-74
2 MI W STERLING AVE, Peoria, IL
Built 1978 ADT: 32,500
FAI 474 RMP 1.18
UnknownOver: EB I-74
2 MI W STERLING AVE, Peoria, IL
Built 1978 ADT: 32,500
Showing 3,001-3,050 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 |