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
63RD ST
UnknownOver: I- 90,94 RYAN & CTA
I-94 AT 63RD ST, Cook, IL
Built 1960 ADT: 265,900
59TH ST
UnknownOver: I- 90,94 RYAN & CTA
5 M S I-55, Cook, IL
Built 1961 ADT: 343,700
57TH ST
UnknownOver: I- 90,94 RYAN & CTA
0.2 M S 55TH ST, Cook, IL
Built 1962 ADT: 326,000
55TH ST EB GARFLD
UnknownOver: I- 90,94 RYAN & CTA
AT 55TH ST, Cook, IL
Built 1962 ADT: 294,200
55TH ST WB GARFLD
UnknownOver: I- 90,94 RYAN & CTA
AT 55TH ST, Cook, IL
Built 1962 ADT: 294,200
ROOT ST
UnknownOver: I- 90,94 RYAN & CTA
2 M S I-55, Cook, IL
Built 1961 ADT: 320,400
43RD ST
UnknownOver: I- 90,94 RYAN & CTA
2.1 M S I-55, Cook, IL
Built 1961 ADT: 308,200
47TH ST
UnknownOver: I- 90,94 RYAN & CTA
2.7 M S I-55, Cook, IL
Built 1960 ADT: 312,900
51ST ST
UnknownOver: I- 90,94 RYAN & CTA
3.2 M S I-55, Cook, IL
Built 1962 ADT: 299,600
33RD ST
UnknownOver: I- 90,94 RYAN & CTA
1.8 M N 47TH ST, Cook, IL
Built 1961 ADT: 246,400
31ST ST
UnknownOver: I- 90,94 RYAN & CTA
0.9 M S I-55, Cook, IL
Built 1961 ADT: 246,400
35TH ST
UnknownOver: I- 90,94 RYAN & CTA
1.3 M S I-55, Cook, IL
Built 1961 ADT: 312,900
TAYLOR ST
UnknownOver: I- 90,94 RYAN
0.4 M S OF I-290, Cook, IL
Built 1960 ADT: 206,100
WACKER DR SB UPPER
UnknownOver: WACKER DR SB LOWER
.1 MI S OF JACKSON, Cook, IL
Built 2012 ADT: 20,900
KEDZIE AVE
UnknownOver: I- 57
0.6 M S OF I-294, Cook, IL
Built 2012 ADT: 12,400
Lake Cook Rd
UnknownOver: I-294 NB
2 Mi W of Ill 43, Cook, IL
Built 2008 ADT: 130,100
IL 171 (CUMBERLAND
UnknownOver: I- 90 JFK & CTA
1.5M W of IL43, Cook, IL
Built 2014 ADT: 180,900
I- 57
UnknownOver: I-294
0.6 M S OF IL 83, Cook, IL
Built 2011 ADT: 102,100
I- 57
UnknownOver: I- 57NB 2 I-294NB
.04M N of I294/I57, Cook, IL
Built 2011 ADT: 15,200
RR - METRA TRK 1&2
UnknownOver: I- 90,94 DAN RYAN
.17M S OF 63RD, Cook, IL
Built 2013 ADT: 301,400
RR - METRA TRK 3
UnknownOver: I- 90,94 DAN RYAN
0.17 M S OF 63RD ST, Cook, IL
Built 2013 ADT: 301,400
OHIO ST WB TO I94E
UnknownOver: I- 94
0.24 M W OF GRAND AV, Cook, IL
Built 2014 ADT: 193,400
OHIO ST WB TO I94E
UnknownOver: I- 94EB RMP 2 OHIOEB
.1M W OF I94, Cook, IL
Built 2014 ADT: 15,900
US 6 (159TH ST)
UnknownOver: I-294 TRI-STATE TOLL
0.3 M W Western Ave, Cook, IL
Built 2018 ADT: 104,500
I- 55 WB STEVENSON
UnknownOver: ML KING DR & RAMP
1.3M E of I94, Cook, IL
Built 2015 ADT: 12,600
I- 55 EB to US 41N
UnknownOver: US 41 LSD & CN RR
1.6 M E of -I94, Cook, IL
Built 2017 ADT: 68,700
US 41 NB to I-55 W
UnknownOver: US 41 LSD
1.6 M E of I-94, Cook, IL
Built 2015 ADT: 68,700
ELMHURST SB
UnknownOver: I- 90 ADAMS TOLLWAY
.3M S of Oakton, Cook, IL
Built 2015 ADT: 160,700
ELMHURST NB
UnknownOver: I- 90 ADAMS TOLLWAY
0.3 M S of Oakton, Cook, IL
Built 2015 ADT: 160,700
IL 72 (LEE ST)
UnknownOver: I- 90 ADAMS TOLLWAY
0.5 M W of US 45, Cook, IL
Built 2014 ADT: 172,200
IL 171 SB FIRST AV
UnknownOver: I- 55 STEVENSON
1.4M SW of Il43, Cook, IL
Built 2015 ADT: 127,600
IL 171 NB FIRST AV
UnknownOver: I- 55 STEVENSON
1.4 M SW of IL 43, Cook, IL
Built 2016 ADT: 1,400
IL 171 SB RMP I-55
UnknownOver: I- 55 STEVENSON
1.4M SW of IL43, Cook, IL
Built 2015 ADT: 10,100
PFINGSTEN RD
UnknownOver: I- 94 EDENS SPUR
1.1 M W IL 43, Cook, IL
Built 2020 ADT: 46,000
MONROE ST
UnknownOver: I- 90,94 JFK
0.3 M N of I-290, Cook, IL
Built 2018 ADT: 231,100
ADAMS ST
UnknownOver: I- 90,94 JFK
0.2 M N I-290, Cook, IL
Built 2021 ADT: 240,400
JACKSON BLVD
UnknownOver: I- 90,94 JFK
0.1 M N of I-290, Cook, IL
Built 2021 ADT: 240,400
I-290 WB IKE (CONG
UnknownOver: I- 90,94 DAN RYAN
.5M W of Chgo River, Cook, IL
Built 2017 ADT: 176,400
I-290 EB IKE (CONG
UnknownOver: I- 90,94 DAN RYAN
.5M W of Chgo River, Cook, IL
Built 2018 ADT: 176,400
I- 90,94 NB 2 I290
UnknownOver: I- 90,94
.4 M N of Roosvlt Rd, Cook, IL
Built 2015 ADT: 176,400
IDA B WB to I90/94
UnknownOver: I290 EB to I90/94 NB
I-90/94 & I-290, Cook, IL
Built 2019 ADT: 33,600
VAN BUREN ST
UnknownOver: I- 90,94 JFK
0.1 M N of I-290, Cook, IL
Built 2018 ADT: 176,400
PEORIA ST
UnknownOver: I-290 - IL 110 & CTA
0.2 M W of I-90,94, Cook, IL
Built 2014 ADT: 134,100
MORGAN ST
UnknownOver: I-290 - IL 110 & CTA
0.3 M W of I-90,94, Cook, IL
Built 2014 ADT: 134,100
I- 94 NB to I-290
UnknownOver: I-290 EB to I-94 NB
.4 M N of Roosevelt, Cook, IL
Built 2017 ADT: 33,600
HARRISON ST
UnknownOver: I- 90,94 NB DAN RYAN
0.1 M S of I-290, Cook, IL
Built 2014 ADT: 222,300
I-290 EB to I90,94
UnknownOver: I- 90,94
0.5 M E of Racine, Cook, IL
Built 2019 ADT: 176,400
HARRISON ST
UnknownOver: I- 90,94 SB DAN RYAN
0.1 M S of I-290, Cook, IL
Built 2014 ADT: 28,300
I- 94 SB to I-290
UnknownOver: I-290 & I- 90,94
0.1 M S of Jackson, Cook, IL
Built 2019 ADT: 249,600
I-290 WB to I90,94
UnknownOver: I- 90,94
0.9 M W of State St, Cook, IL
Built 2019 ADT: 176,400
Showing 851-900 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 |