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
IL 113
UnknownOver: I- 55
2.0 M S OF IL 129, Will, IL
Built 1956 ADT: 28,200
WILMINGTON RD
UnknownOver: I- 57
13.2 M S OF US 30, Will, IL
Built 1967 ADT: 28,800
JOLIET RD (PEOTONE
UnknownOver: I- 57
11.2 M S OF US 30, Will, IL
Built 1967 ADT: 28,800
WABASH RR
UnknownOver: IL-102
3.8 MI S OF ILL 53, Will, IL
Built 1908 ADT: 4,100
LOCKPORT-PLAINFIEL
UnknownOver: I- 55
2.0 M S OF IL 126, Will, IL
Built 1958 ADT: 81,800
RIVER RD
UnknownOver: I- 80
1.0 M W OF I-55, Will, IL
Built 1960 ADT: 50,300
CENTER ST
UnknownOver: US 52
US 52 WEST OF US 6, Will, IL
Built 1965 ADT: 7,300
CENTER ST NB
UnknownOver: I- 80 WB TO CENTERSB
1 M W IL53-.08 N I80, Will, IL
Built 1967 ADT: 1,100
CENTER ST NB
UnknownOver: I- 80
1.0 M W OF IL-53, Will, IL
Built 1965 ADT: 45,300
WOLF RD
UnknownOver: I- 80
2.0 M W OF US-45, Will, IL
Built 1965 ADT: 68,800
LORENZO ROAD
UnknownOver: I- 55
2.0 M N IL 129, Will, IL
Built 1960 ADT: 36,500
PARKER RD
UnknownOver: I- 80
3.0 M NE OF US-30, Will, IL
Built 1966 ADT: 68,800
MAPLE RD
UnknownOver: I- 80
1.9m E of 355 alg 80, Will, IL
Built 1966 ADT: 68,800
CHERRY HILL RD
UnknownOver: I- 80
1.0 M SW OF US-30, Will, IL
Built 1965 ADT: 75,700
HARLEM AVE
UnknownOver: I- 57
9.1 M S OF US 30, Will, IL
Built 1967 ADT: 28,800
GOUGAR RD
UnknownOver: I- 80
4.0 M E OF US-52, Will, IL
Built 1965 ADT: 75,700
PAULING RD
UnknownOver: I- 57
7.5 M S OF US 30, Will, IL
Built 1967 ADT: 28,800
FRANCIS RD
UnknownOver: I- 80
0.5 M N OF US-30, Will, IL
Built 1965 ADT: 63,900
80TH AVE
UnknownOver: I- 80
1.0 M W OF IL-43, Will, IL
Built 1967 ADT: 102,900
BLUFF ROAD
UnknownOver: I- 55
1.5 M S OF US 6, Will, IL
Built 1961 ADT: 54,200
BLACK RD
UnknownOver: I- 55
1.0 M N OF US 52, Will, IL
Built 1959 ADT: 78,800
CATON FARM RD
UnknownOver: I- 55
3.0 M N OF US 52, Will, IL
Built 1958 ADT: 78,800
RENWICK RD
UnknownOver: I- 55
0.8 M N OF US 30, Will, IL
Built 1959 ADT: 81,800
MSTP & EJ&E RR
UnknownOver: ILL 53,7
.7 M N OF ILL 7, Will, IL
Built 1900 ADT: 17,200
GM&O RR
UnknownOver: US6 WB
0.1 MI E OF ILL 53, Will, IL
Built 1900 ADT: 8,750
CRI&PRR
UnknownOver: ILL 53 (CHICAGO ST)
0.1 M S OF US 30, Will, IL
Built 1901 ADT: 5,600
SANTAFE RR
UnknownOver: ILL 53 W BOUND
500 E OF DESPLAIN R, Will, IL
Built 1907 ADT: 5,900
SANTAFE RR
UnknownOver: ILL 53 N BOUND
0.5 MI N OF US 30, Will, IL
Built 1900 ADT: 5,900
EJ & E RR
UnknownOver: US 45
1.3M S OF US 30, Will, IL
Built 1933 ADT: 13,900
EJ&E RR
UnknownOver: ILL 171
1.4M N OF US 6, Will, IL
Built 1918 ADT: 10,000
CRI & P RR (METRA)
UnknownOver: US 30
0.38M.E.OF BRIGGS ST, Will, IL
Built 1900 ADT: 8,750
GM&O RR
UnknownOver: US 6 EB
.12 E OF IL-53, Will, IL
Built 1900 ADT: 1,550
CE & I RR
UnknownOver: IL RT 1
0.7 MI S OF COOK CO, Will, IL
Built 1900 ADT: 6,850
SANTAFE RR
UnknownOver: US 6 EB
0.1 MI E OF IL 53, Will, IL
Built 1900 ADT: 1,550
SANTAFE RR
UnknownOver: US 6 WB
0.1 MI E OF ILL 53, Will, IL
Built 1900 ADT: 8,750
ROCK ISLAND RR
UnknownOver: US 6
US 6 S OF US 30, Will, IL
Built 1900 ADT: 5,400
ATSF GMO RR
UnknownOver: US 30 E BOUND
0.1 MI E IL 53 NB, Will, IL
Built 1900 ADT: 7,700
I- 55
UnknownOver: IL 53
2 M W OF COOK CO, Will, IL
Built 1980 ADT: 26,400
US 6
UnknownOver: I- 55
2 M S OF I-80, Will, IL
Built 1989 ADT: 54,800
WEBER RD SB
UnknownOver: I- 55
2 M W OF VTRNS PKWY., Will, IL
Built 1990 ADT: 91,600
I- 80 EB
UnknownOver: HOUBOLT RD
1.5 M E OF I-55, Will, IL
Built 1993 ADT: 14,400
I- 80 WB
UnknownOver: HOUBOLT RD
1.5 M E OF I-55, Will, IL
Built 1993 ADT: 14,400
VETERANS PARKWAY
UnknownOver: I- 55
2.1 M SW OF IL 53, Will, IL
Built 1994 ADT: 118,500
I- 55 SB TO I-80 W
UnknownOver: WEST FRONTAGE RD
I-55SB TO I-80WB RMP, Will, IL
Built 2005 ADT: 2,250
I-355 SB TO I-80 E
UnknownOver: I-80 EB TO I-355 NB
0.20 M.S. OF I-80, Will, IL
Built 2007 ADT: 6,500
I- 80 EB TO I-355
UnknownOver: I- 80
0.65 M S OF US-6, Will, IL
Built 2007 ADT: 62,500
I-355 SB TO I-80 E
UnknownOver: I- 80
I-80 & I-355 INTERCH, Will, IL
Built 2007 ADT: 62,500
CEDAR RD
UnknownOver: I- 80
0.5 M S OF I-355, Will, IL
Built 2007 ADT: 62,500
CEDAR RD
UnknownOver: I-355
0.4 M W OF US 6, Will, IL
Built 2007 ADT: 48,500
US 6
UnknownOver: I-355
0.9 M N OF I-80, Will, IL
Built 2007 ADT: 48,500
Showing 3,801-3,850 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 |