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
US 30 (LINCOLN HWY
FairOver: BUTTERFIELD CREEK
0.2 E CRAWFORD AVE, Cook, IL
Built 1984 Load: 53.1 t ADT: 34,100
PULASKI RD
FairOver: N BR CHICAGO RIVER
1 M N IL 21, Cook, IL
Built 1994 Load: 53.1 t ADT: 16,200
FAP-95 (ILL-33)
FairOver: LITTLE SALT CREEK
2.5 MI NW DIETRICH, Effingham, IL
Built 1977 Load: 53.1 t ADT: 7,500
FAP 841-ILL 154
FairOver: LITTLE MUDDY RIVER
FRANKLIN-PERRY CO LI, Franklin, IL
Built 1992 Load: 53.1 t ADT: 2,300
US 6 - FAU 5789
FairOver: STREAM
1/4 MI E COAL VALLEY, Henry, IL
Built 1991 Load: 53.1 t ADT: 4,550
I-57
FairOver: Dranage Ditch
7.15 M. S. of IL 116, Iroquois, IL
Built 2015 Load: 53.1 t ADT: 18,100
FAS 2869/IL37
FairOver: DODDS CREEK
3.5 MI S IL 148, Jefferson, IL
Built 2002 Load: 53.1 t ADT: 4,150
TR 322A
FairOver: WOLF CR
E 19TH N 1690, LaSalle, IL
Built 1954 Load: 53.1 t ADT: 275
ILL 17 FAP 649
FairOver: PRAIRIE CREEK
1 MI E OF ILL 23, Livingston, IL
Built 1989 Load: 53.1 t ADT: 1,800
SAND PRAIRIE ROAD
FairOver: CAHOKIA CANAL
1.25 M S ILL 111, Madison, IL
Built 1955 Load: 53.1 t ADT: 1,700
HILLSBORO FILLMORE
FairOver: EAST BRANCH DRY FORK
0.2 MI W OF FILLMORE, Montgomery, IL
Built 1969 Load: 53.1 t ADT: 550
IL 64
FairOver: FIVE MILE CREEK
2.7 MI W JCT ILL 26, Ogle, IL
Built 2010 Load: 53.1 t ADT: 625
I-55 (SB)
FairOver: LAKE SPRINGFIELD
3M S I-72, Sangamon, IL
Built 2001 Load: 53.1 t ADT: 21,900
I-55 (NB)
FairOver: LAKE SPRINGFIELD
3M S I-72, Sangamon, IL
Built 2002 Load: 53.1 t ADT: 21,900
N CO RD/ FAU 9380
FairOver: DRAINAGE DITCH
0.44 M N IL 177, St. Clair, IL
Built 1962 Load: 53.1 t ADT: 2,450
IL 73
FairOver: YELLOW CREEK
0.5 MI N PEARL CITY, Stephenson, IL
Built 1992 Load: 53.1 t ADT: 2,350
US20 FREEPORT BYPA
FairOver: PECATONICA RIV TRIB
1.25 MI W OF IL 26, Stephenson, IL
Built 1987 Load: 53.1 t ADT: 6,150
IL 171
FairOver: FIDDYMENT CREEK
3.8 M S OF COOK CO, Will, IL
Built 1989 Load: 53.1 t ADT: 18,000
I 57 NB
FairOver: LAKE CREEK BRANCH
4 MI N OF IL 13, Williamson, IL
Built 1961 Load: 53.1 t ADT: 20,650
I 57 SB
FairOver: LAKE CREEK BRANCH
4 MI N OF MARION, Williamson, IL
Built 1961 Load: 53.1 t ADT: 20,650
US 24
FairOver: ROCK CREEK
0.2MI W I-172/US 24, Adams, IL
Built 1971 Load: 53.5 t ADT: 4,350
CERMAK RD (22ND ST
FairOver: DES PLAINES RIVER
1.3 M W IL 43, Cook, IL
Built 1930 Load: 53.5 t ADT: 25,600
47TH ST
FairOver: FLAG CREEK
2.1 M W US 45, Cook, IL
Built 1958 Load: 53.5 t ADT: 9,000
I-90WB TO NB STONY
FairOver: CONRAIL & AMTRAK
0.13 M S 79TH P7C, Cook, IL
Built 1958 Load: 53.5 t ADT: 4,000
I-70 (EB)
FairOver: COTTONWOOD CREEK
6.5MI E EFF CO LINE, Cumberland, IL
Built 1968 Load: 53.5 t ADT: 11,550
FAS-721 (CH-1)
FairOver: HURRICANE CREEK
0.2 MI NE BINGHAM, Fayette, IL
Built 1934 Load: 53.5 t ADT: 550
I 57 NB
FairOver: GUN CREEK
1.4 MI N ILL 154, Franklin, IL
Built 1962 Load: 53.5 t ADT: 18,600
I 57 SB
FairOver: GUN CREEK
1.4 MI N ILL 154, Franklin, IL
Built 1962 Load: 53.5 t ADT: 18,600
ILL 37
FairOver: GUN CREEK
1 MI N WHITTINGTON, Franklin, IL
Built 1964 Load: 53.5 t ADT: 3,500
ILL 113/FAS 301
FairOver: BR OF MAZON RIVER
2.75 M. E. OF IL 47, Grundy, IL
Built 2003 Load: 53.5 t ADT: 4,450
US 150
FairOver: CAMP CREEK
0.7 MI. N. OF IL 81, Henry, IL
Built 2000 Load: 53.5 t ADT: 2,950
ANDERSON RD
FairOver: UNION PACIFIC RR
1 MI S of IL 38, Kane, IL
Built 2016 Load: 53.5 t ADT: 4,050
I-88 WB
FairOver: CNW RR
.6 MI W OF NELSON RD, Lee, IL
Built 1974 Load: 53.5 t ADT: 7,850
I-88 WB
FairOver: 3 MILE BRANCH
2.3 MI W JCT ILL 26, Lee, IL
Built 1974 Load: 53.5 t ADT: 7,850
I-55 SB
FairOver: VERMILLION RIVER
1.5 M N of IL 116, Livingston, IL
Built 1975 Load: 53.5 t ADT: 10,900
I-55 NB
FairOver: VERMILION RIVER
1.5 M N of IL 116, Livingston, IL
Built 1975 Load: 53.5 t ADT: 10,900
I-55
FairOver: DRAINAGE DITCH
.7M SW ELKHART INT, Logan, IL
Built 1974 Load: 53.5 t ADT: 32,400
SB US 67
FairOver: FARMERS FORK
1 MI S OF ILL 9, McDonough, IL
Built 2012 Load: 53.5 t ADT: 6,350
ILL 40
FairOver: MUD RUN
1.38 MI S OF ILL 17, Peoria, IL
Built 1964 Load: 53.5 t ADT: 2,050
NEW IL 13 EB
FairOver: BANKSTON FORK
3.5 MI W HARRISBURG, Saline, IL
Built 1997 Load: 53.5 t ADT: 7,950
NEW IL 13 WB
FairOver: BANKSTON FORK
3.5 MI W HARRISBURG, Saline, IL
Built 1997 Load: 53.5 t ADT: 7,950
FAI 64 WB
FairOver: PLUM CREEK
1.25M NW OKAWVILLE, Washington, IL
Built 1969 Load: 53.5 t ADT: 15,500
FAI 64 EB
FairOver: PLUM CREEK
1.25 NW OKAWVILLE, Washington, IL
Built 1969 Load: 53.5 t ADT: 15,500
IL 1
FairOver: TRIM CREEK
4.5 M S OF IL 394, Will, IL
Built 1920 Load: 53.5 t ADT: 4,800
US 20 E B
FairOver: E CHANNEL ROCK RIV
.7 MI E OF ILL 2, Winnebago, IL
Built 2014 Load: 53.5 t ADT: 32,000
IL 171 NB FIRST AV
FairOver: RR - CN
0.3 M SE I-55, Cook, IL
Built 1963 Load: 53.8 t ADT: 39,600
SIMONDS DR
FairOver: PARKING LOT ENTRANCE
4700 N. & 600 W, Cook, IL
Built 1935 Load: 53.8 t ADT: 1,700
I-57 (NB)
FairOver: UPRR & Decatur&Estrn ILR
N EDGE OF TUSCOLA, Douglas, IL
Built 1969 Load: 53.8 t ADT: 11,050
I-57 (SB)
FairOver: UPRR & Decatur&Estrn ILR
N EDGE OF TUSCOLA, Douglas, IL
Built 1969 Load: 53.8 t ADT: 11,050
I-355
FairOver: PRENTISS CREEK
1.2 MI E. ILL RTE 53, DuPage, IL
Built 1988 Load: 53.8 t ADT: 65,950
Showing 13,501-13,550 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.