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
ICG RR
UnknownOver: TR 272
1 MI N OF HANAFORD, Franklin, IL
Built 1900 ADT: 75
ICG RR
UnknownOver: TR 344
2.5M N THOMPSONVILLE, Franklin, IL
Built 1900 ADT: 25
ICG RR
UnknownOver: TR 352
2 MI S THOMPSONVILLE, Franklin, IL
Built 1900 ADT: 100
ICG RR
UnknownOver: TR 352
2.5M S THOMPSONVILLE, Franklin, IL
Built 1900 ADT: 100
ICG RR
UnknownOver: DUQUOIN ST IN BENTON
SOUTH OF IL 14, Franklin, IL
Built 1900 ADT: 1,700
BNRR OVERPASS
UnknownOver: FAP 869-IL 14
E EDGE-CHRISTOPHER, Franklin, IL
Built 1998 ADT: 5,250
BN(078469G)
UnknownOver: US 136
CTR-W-5T4NR1E, Fulton, IL
Built 1929 ADT: 2,400
BN(078592F)
UnknownOver: SBI 78
NE-3-T7NR4E, Fulton, IL
Built 1928 ADT: 75
ILL 13
UnknownOver: MARKET ST.
OLD SHAWNEETOWN, Gallatin, IL
Built 2004 ADT: 100
IL-16 & 100
UnknownOver: Illinois River & TR-423
AT HARDIN ILLINOIS, Greene, IL
Built 1930 ADT: 10
CMNW RR
UnknownOver: TR 45
1.5 SE WILMINGTON, Greene, IL
Built 1900 ADT: 50
ICG-RR
UnknownOver: TR 303
0.5 MI S OF KANE, Greene, IL
Built 1900 ADT: 50
GATEWAY WESTERN RR
UnknownOver: MSS 1120 ROWE ST
ROODHOUSE W OF 67, Greene, IL
Built 1900 ADT: 150
GATEWAY WESTERN RR
UnknownOver: MSS 1120 ROWE ST
ROODHOUSE W OF 267, Greene, IL
Built 1900 ADT: 150
FAI 55 NB
UnknownOver: MAZON RIVER @ TR 125
4.1 MI S OF REED RD, Grundy, IL
Built 1955 ADT: 50
FAI 55 SB
UnknownOver: MAZON RIVER @ TR 125
4.1 MI S OF REED RD, Grundy, IL
Built 1955 ADT: 50
Nettle Cr Rd CH 61
UnknownOver: FAI 80
1 M W of Seneca Int, Grundy, IL
Built 1960 ADT: 27,600
TWP RD TR 70
UnknownOver: FAI 80
5.20 MI W ILL 47, Grundy, IL
Built 1958 ADT: 30,600
Saratoga Rd / TR 8
UnknownOver: FAI 80
3.19 MI W OF ILL 47, Grundy, IL
Built 1958 ADT: 30,600
Ashton Rd / TR 106
UnknownOver: FAI 80
2.21 MI W ILL 47, Grundy, IL
Built 1958 ADT: 30,600
Brown Rd / TR 150
UnknownOver: FAI 80
4.48 MI E OF ILL 47, Grundy, IL
Built 1960 ADT: 39,100
Pioneer Rd / TR 78
UnknownOver: FAI 80
4.20 MI W OF ILL 47, Grundy, IL
Built 1958 ADT: 30,600
WABENA ST-MINOOKA
UnknownOver: FAI 80
0.5 M E MINOOKA INT, Grundy, IL
Built 1959 ADT: 50,300
TR-110
UnknownOver: FAI-55
0.32 MI N LIV CO LN, Grundy, IL
Built 1974 ADT: 22,900
TR 155
UnknownOver: I55, RT 66 & ICG RR
3 MI SW OF GARDNER, Grundy, IL
Built 1979 ADT: 1,050
ILL 47
UnknownOver: ARMSTRONG & B & O RR
.57 S OF US 6 WEST, Grundy, IL
Built 1978 ADT: 2,300
ILL 47
UnknownOver: BUCHANAN ST
ILL 47 IN MORRIS, Grundy, IL
Built 1978 ADT: 475
FAS 272
UnknownOver: FAI 55
2.51 M S OF REED RD, Grundy, IL
Built 1994 ADT: 24,100
FAS 299/REED RD.
UnknownOver: I-55
0.1 MI S WILL CO LN, Grundy, IL
Built 1995 ADT: 24,100
TR 182
UnknownOver: FAI 55
4.79 MI S OF REED RD, Grundy, IL
Built 1993 ADT: 24,100
FAS 292/GARDNER RD
UnknownOver: I 55
GARD. RD INTERCHANGE, Grundy, IL
Built 1997 ADT: 24,100
ILL 47
UnknownOver: I 80
INTER I80 & ILL47, Grundy, IL
Built 1997 ADT: 39,100
ASHLEY RD/FAU 5974
UnknownOver: I-80
1.24 MI E OF IL 47, Grundy, IL
Built 2006 ADT: 39,100
FAP 623 (AT OR 623
UnknownOver: I-80 EB & WB
SENECA JUNCTION, Grundy, IL
Built 2006 ADT: 30,600
BRISBIN RD (FAU 40
UnknownOver: FAI 80
3.72 MI E OF ILL 47, Grundy, IL
Built 2011 ADT: 39,100
MINOOKA RD / CH 16
UnknownOver: I-80
2.56 M W Minooka Int, Grundy, IL
Built 2015 ADT: 39,100
Lisbon Rd (FAU 596
UnknownOver: I-80
0.70 mi W of IL 47, Grundy, IL
Built 2015 ADT: 30,600
IL 47
UnknownOver: I-55
IL47/I-55Interchange, Grundy, IL
Built 2022 ADT: 23,200
EJ&E RR
UnknownOver: RIDGE RD/FAU384
0.66 MI S I-80, Grundy, IL
Built 1974 ADT: 14,100
CRI&P RR
UnknownOver: LISBON ST
CRI&P RR OV LISBON S, Grundy, IL
Built 1900 ADT: 3,150
E J & E RAILROAD
UnknownOver: FAI 80
0.41 M E MINOOKA INT, Grundy, IL
Built 1960 ADT: 50,300
E.J.& E. RR
UnknownOver: MONDAMIN/FAU 400
AUX SABLE SEC 1, Grundy, IL
Built 1900 ADT: 5,550
L & N RR
UnknownOver: FAP-853 (ILL-14)
MCLEANSBORO, Hamilton, IL
Built 1900 ADT: 4,550
US 136
UnknownOver: IL 336
0.5 MI E CARTHAGE, Hancock, IL
Built 2006 ADT: 4,200
TOLEDO & PEORIA WE
UnknownOver: IL 9
3.1M E IL94, LAHARPE, Hancock, IL
Built 1930 ADT: 1,300
US 34
UnknownOver: CHINN ST GULFPORT
0.25 MI E MISS RIV, Henderson, IL
Built 1970 ADT: 250
ILL 94
UnknownOver: BNSFRR/ HENDERSON CR
N EDGE BIGGSVILLE, Henderson, IL
Built 1995 ADT: 25
IL94/116
UnknownOver: US 34
SW OF BIGGSVILLE, Henderson, IL
Built 2014 ADT: 4,150
ATSF(004718F)
UnknownOver: ILL 116 AT MEDIA
NE-15-T9NR4W, Henderson, IL
Built 1934 ADT: 675
ATSF(004724J)
UnknownOver: ILL 94-FAP 534
NW-30-T9NR4W, Henderson, IL
Built 1933 ADT: 1,350
Showing 1,901-1,950 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 |