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
W.C.RR
UnknownOver: US 45
0.4 M N OF ILL 176, Lake, IL
Built 1939 ADT: 18,300
SOO (WICT) AMTK. R
UnknownOver: ILL 132 (GRAND AVE)
0.6 M W OF US 41, Lake, IL
Built 1961 ADT: 21,900
EJEE RR
UnknownOver: SHERIDAN ROAD
1.3 M N OF ILL 137, Lake, IL
Built 1900 ADT: 8,050
CNW RR
UnknownOver: WESTLEIGH ROAD
1.2 M E OF US 41, Lake, IL
Built 1942 ADT: 5,750
IL 43 (TELEGRAPH)
UnknownOver: IL 120
1.4 M E OF I-94, Lake, IL
Built 1973 ADT: 19,300
SKOKIE VALLEY BKPA
UnknownOver: US 41 (SKOKIE HWY)
.2 SO OF IL-60, Lake, IL
Built 1936 ADT: 42,200
MATHON DR (GRAND A
UnknownOver: IL 137(AMSTUTZ EXPY)
0.2M E OF SHERIDAN R, Lake, IL
Built 1964 ADT: 5,750
IL 120 WB
UnknownOver: GREENLEAF AVE
1.1 M E OF I-94, Lake, IL
Built 1977 ADT: 10,600
IL 120 EB
UnknownOver: GREENLEAF AVE
1.1 M E OF I-94, Lake, IL
Built 1977 ADT: 10,600
RR - METRA
UnknownOver: PETERSON AVE
0.55 M E OF US 45, Lake, IL
Built 1967 ADT: 6,800
IL 176
UnknownOver: US 41
LAKE BLUFF, Lake, IL
Built 1980 ADT: 35,100
BELVIDERE ST
UnknownOver: C&NW RR& L.F.F-WAY.
JUST E O SHERIDAN RD, Lake, IL
Built 1966 ADT: 13,900
C.& N.W.RR
UnknownOver: IL-137 BUCKLEY RD.
0.9M.E.OF IL-131, Lake, IL
Built 1988 ADT: 5,200
SHERIDAN RD
UnknownOver: BUCKLEY ROAD
0.05 E OF AMSTUTZ, Lake, IL
Built 1989 ADT: 5,200
SHERIDAN RD
UnknownOver: 24TH ST
0.5 M N OF IL 137, Lake, IL
Built 1989 ADT: 525
IL 137 (LK FRT FRW
UnknownOver: 24TH ST
0.53 M N OF IL 137, Lake, IL
Built 1989 ADT: 525
WASHINGTON ST
UnknownOver: IL 137 (LK FRT FRWY)
0.05 M E OF SHERIDAN, Lake, IL
Built 1988 ADT: 5,750
CLAVEY RD
UnknownOver: US 41 EDENS
1.0 M N OF CO LINE, Lake, IL
Built 1990 ADT: 61,600
IL 137
UnknownOver: US 45
1.4 M S OF IL 120, Lake, IL
Built 1993 ADT: 25,900
IL 59
UnknownOver: RR - METRA & ROLLINS
IL 59 & ROLLINS RD, Lake, IL
Built 1995 ADT: 8,850
IL 21
UnknownOver: IL 120 & STREAM
1 M W OF I-94, Lake, IL
Built 2003 ADT: 30,700
DEERFIELD RD
UnknownOver: I-94(TRI STATE TOLL)
2.4 M E US-45, Lake, IL
Built 1998 ADT: 171,100
RR - EJ&E
UnknownOver: IL 22
.7 MI. E. US 12, Lake, IL
Built 2006 ADT: 15,000
IL 59
UnknownOver: US 12
0.5 M S OF IL 176, Lake, IL
Built 2001 ADT: 33,600
IL 22
UnknownOver: I- 94 TRI STATE TOLL
3.0 M S OF IL 60, Lake, IL
Built 2009 ADT: 165,600
US 41
UnknownOver: IL 132 (GRAND AVE)
US 41 & ILL 132 INT., Lake, IL
Built 2009 ADT: 29,600
IL 132 (GRAND AVE)
UnknownOver: I- 94 TRI STATE TOLL
3.0 M N IL 120, Lake, IL
Built 2009 ADT: 102,300
IL 120 EB
UnknownOver: I- 94 TRI STATE TOLL
1.6 M W OF US 41, Lake, IL
Built 2008 ADT: 126,200
IL 120 WB
UnknownOver: I- 94 TRI STATE TOLL
1.6 M W OF US 41, Lake, IL
Built 2008 ADT: 95,600
RUSSELL RD
UnknownOver: I- 94 SB TRI STATE
1.7 M N IL 173, Lake, IL
Built 2012 ADT: 92,600
RUSSELL RD
UnknownOver: I- 94 NB (TRI STATE)
1.7 M N IL 173, Lake, IL
Built 2012 ADT: 92,600
IL 173
UnknownOver: I- 94 TRI-STATE
0.75 M W US 41, Lake, IL
Built 2015 ADT: 78,200
US 12 WB
UnknownOver: IL 59 SB
.5M W of Il134, Lake, IL
Built 2018 ADT: 12,800
IL 60
UnknownOver: I- 94 TRI STATE TOLL
1.9 M W OF US 41, Lake, IL
Built 2007 ADT: 156,800
CAN PAC RR
UnknownOver: WASHINGTON ST
0.75 W OF .US41, Lake, IL
Built 1969 ADT: 17,300
WISCONSIN CENTRAL
UnknownOver: WASHINGTON STREET
.24 MI W OF LAKE AVE, Lake, IL
Built 2017 ADT: 15,900
PEDESTRIAN BRIDGE
UnknownOver: LEWIS AVE
1 MI S. OF ILL 173, Lake, IL
Built 1982 ADT: 15,000
PULASKI DR 14TH ST
UnknownOver: US RTE 41
.6 MI E ILL 43, Lake, IL
Built 1979 ADT: 28,500
Robert McClory Pat
UnknownOver: IL-173
1M.W.OF SHERIDAN RD., Lake, IL
Built 1988 ADT: 8,700
Robert McClory Pat
UnknownOver: WADSWORTH RD.
0.5M.E.OF LEWIS AVE., Lake, IL
Built 1989 ADT: 8,100
Robert McClory Pat
UnknownOver: RUSSELL ROAD
1.2M.W.0F IL-173, Lake, IL
Built 1988 ADT: 5,400
GILMER ROAD
UnknownOver: FAIRFIELD ROAD
INT GILMER&FAIRFIELD, Lake, IL
Built 2008 ADT: 10,200
WISCONSIN CENTRAL
UnknownOver: ROLLINS ROAD
0.02 MI W. OF RTE 83, Lake, IL
Built 2015 ADT: 27,800
WADSWORTH RD
UnknownOver: I-94
.6M W OF IL41, Lake, IL
Built 2006 ADT: 78,200
C&NW RR
UnknownOver: SUNSET AVE
.25 E OF DELANY RD, Lake, IL
Built 1969 ADT: 13,200
pedestrian crossin
UnknownOver: Sheridan Rd
.2M N of Greenwood, Lake, IL
ADT: 16,200
PEDESTRIAN OVERPAS
UnknownOver: US ROUTE 41
S OF DEERFIELD RD, Lake, IL
Built 1964 ADT: 64,500
DESPLAINES RIV TRA
UnknownOver: US HIGHWAY 41
300FT E KILBOURN RD, Lake, IL
Built 1995 ADT: 30,500
IL 21
UnknownOver: I- 94 TRI STATE TOLL
1.2 M S OF IL 132, Lake, IL
Built 1958 ADT: 95,600
EVERETT RD
UnknownOver: INTERSTATE 94
I-94 1.3M S ILL 60, Lake, IL
Built 1958 ADT: 156,800
Showing 2,301-2,350 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 |