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
TR 125 BELL RD
FairOver: AUX SABLE CREEK
BY JUGHANDLE ROAD, Kendall, IL
Built 1983 Load: 37.9 t ADT: 425
IL 60
FairOver: MD FK N BR CHICAGO R
0.4 M W OF IL 43, Lake, IL
Built 1941 Load: 37.9 t ADT: 23,200
GRAND AVE
FairOver: BOAT CHANNEL
0.5 M E OF US 12, Lake, IL
Built 1926 Load: 37.9 t ADT: 5,750
US 45
FairOver: SEAVEY DRAIN DITCH
1.5 M NW OF IL 21, Lake, IL
Built 1932 Load: 37.9 t ADT: 15,100
WESTLEIGH RD
FairOver: MID FK N BR CHI RIV
WESTLEIGH E OF IL 43, Lake, IL
Built 1916 Load: 37.9 t ADT: 2,650
TR 334
FairOver: INDIAN CREEK
N 40TH E 2005, LaSalle, IL
Built 1916 Load: 37.9 t ADT: 200
FAP-783 (ILL-33)
FairOver: CSXT RR
.75 MI S US-50, Lawrence, IL
Built 1961 Load: 37.9 t ADT: 1,900
FAS-1808 (SBI-12)
FairOver: BEAVER POND DITCH
3.5 MI E LAWRENCEVIL, Lawrence, IL
Built 1983 Load: 37.9 t ADT: 2,450
FAS-1801
FairOver: LITTLE BONPAS CREEK
1.2 MI S HELENA, Lawrence, IL
Built 1991 Load: 37.9 t ADT: 150
OGEE ROAD
FairOver: UNNAMED STREAM
0.5 M N S PAW PAW RD, Lee, IL
Built 1982 Load: 37.9 t ADT: 100
OLD RT 66 NB/FAS 2
FairOver: TURTLE CR
1.28 MI S ILL 116, Livingston, IL
Built 1954 Load: 37.9 t ADT: 3,400
FAP 786/IL 170
FairOver: BR OF MUD CREEK
6.24 MI S OF ILL 17, Livingston, IL
Built 1990 Load: 37.9 t ADT: 1,550
ILL 47
FairOver: DRAINAGE DITCH
0.3 MI N OF DWIGHT, Livingston, IL
Built 1977 Load: 37.9 t ADT: 4,450
MS 1800 C
FairOver: STREAM
W. BOILING SPRINGS, Macon, IL
Built 1982 Load: 37.9 t ADT: 550
TR 104A (TH-S65)
FairOver: STREAM
1 MI N OF WENONA, Marshall, IL
Built 1965 Load: 37.9 t ADT: 100
TR 4
FairOver: CREEK
0.4 MI N OF FAS 937, Massac, IL
Built 1999 Load: 37.9 t ADT: 50
IL 95
FairOver: KEPPLE CREEK
0.2 MI E OF ILL 41, McDonough, IL
Built 2001 Load: 37.9 t ADT: 1,650
GREEN ROAD
FairOver: N BR KISHWAUKEE RIV
1.0 MI NW OF ALDEN R, McHenry, IL
Built 1975 Load: 37.9 t ADT: 100
TR 82
FairOver: CONCORD CREEK
5.0 M W GREENVIEW, Menard, IL
Built 1996 Load: 37.9 t ADT: 50
FAS 617
FairOver: LITTLE APPLE CREEK
2 MI W NORTONVILLE, Morgan, IL
Built 1990 Load: 37.9 t ADT: 275
FAS 659(CH 8)
FairOver: JONATHON CREEK
4.9 MI S IL 133, Moultrie, IL
Built 1982 Load: 37.9 t ADT: 2,000
FAP 316-IL 26 & 72
FairOver: LEAF RIVER
3 MI NW FORRESTON, Ogle, IL
Built 1991 Load: 37.9 t ADT: 3,250
IL 64
FairOver: KILBUCK CREEK
.5 MI W DEKALB CO, Ogle, IL
Built 2005 Load: 37.9 t ADT: 4,300
ILL 64
FairOver: DRAINAGE DITCH
5.3 MI. E. IL 2, Ogle, IL
Built 1933 Load: 37.9 t ADT: 3,900
ILL 105(FAP 741)
FairOver: CREEK
1 MI S OF BEMENT, Piatt, IL
Built 1956 Load: 37.9 t ADT: 1,550
TR 131
FairOver: LAKE FORK DRAIN DIT
4.5 MI SE MONTICELLO, Piatt, IL
Built 1963 Load: 37.9 t ADT: 50
I-72/US 36 (WB)
FairOver: SHRINERS DITCH
1.03M E I-172, Pike, IL
Built 1986 Load: 37.9 t ADT: 7,250
ILL 34
FairOver: GIBBONS CREEK
1.6 MI W HARDIN CO, Pope, IL
Built 1924 Load: 37.9 t ADT: 2,350
ILL 145
FairOver: HILLS BRANCH
1 MI S OF ILL 146, Pope, IL
Built 1932 Load: 37.9 t ADT: 1,750
FAS 942
FairOver: TRIB TO CACHE RIVER
1 MI W OF MOUNDS, Pulaski, IL
Built 1984 Load: 37.9 t ADT: 850
CASHE VIEW LANE
FairOver: LIMEKILN
2.5 MILES, Pulaski, IL
Built 2005 Load: 37.9 t ADT: 125
IL 18
FairOver: LITTLE SANDY CREEK
50FT W of IL 89, Putnam, IL
Built 2005 Load: 37.9 t ADT: 2,100
TR 54 (13W)
FairOver: LICK CREEK
2.0 W LOAMI, Sangamon, IL
Built 1963 Load: 37.9 t ADT: 75
KOKE MILL ROAD 729
FairOver: SPRING CREEK
100 FEET NO.FAU7977, Sangamon, IL
Built 1984 Load: 37.9 t ADT: 1,100
IL 103
FairOver: CRANE CREEK
2.4M W US 67, Schuyler, IL
Built 1932 Load: 37.9 t ADT: 1,350
IL 73
FairOver: TRIB. YELLOW CREEK
1.5 MI. S. OF LENA, Stephenson, IL
Built 1992 Load: 37.9 t ADT: 2,100
ILL 73
FairOver: WADDAMS CREEK
1.6 MI N OF LENA, Stephenson, IL
Built 1983 Load: 37.9 t ADT: 2,050
ILL 3 & ILL 146
FairOver: RUNNING LAKE DITCH
2 MI S WARE, Union, IL
Built 1992 Load: 37.9 t ADT: 4,150
CH 11
FairOver: STREAM
2.5 MI N US 150, Vermilion, IL
Built 1934 Load: 37.9 t ADT: 150
FAP-825 (ILL-15)
FairOver: STREAM
.2 MI E BELLMONT JCT, Wabash, IL
Built 1968 Load: 37.9 t ADT: 3,050
NB US 67
FairOver: SWAN CREEK
4.5 MI S ROSEVILLE, Warren, IL
Built 1996 Load: 37.9 t ADT: 4,900
SB US 67
FairOver: SWAN CREEK
4.5 MI S ROSEVILLE, Warren, IL
Built 1996 Load: 37.9 t ADT: 4,900
FAI 64 EB
FairOver: KASKASKIA RIVER
CLINTON CO LINE, Washington, IL
Built 1971 Load: 37.9 t ADT: 15,500
FAI 64 WB
FairOver: KASKASKIA RIVER
CLINTON CO LINE, Washington, IL
Built 1971 Load: 37.9 t ADT: 15,500
FAP-823 (ILL-15)
FairOver: WHITE OAK SLOUGH
2 MI W EDWARDS CO LN, Wayne, IL
Built 1982 Load: 37.9 t ADT: 2,500
CH-13
FairOver: SKILLET FORK
4.5 MI NW CARMI, White, IL
Built 1998 Load: 37.9 t ADT: 125
PENROSE RD
FairOver: JORDAN CREEK
6 MI N OF STERLING, Whiteside, IL
Built 1983 Load: 37.9 t ADT: 125
US 30
FairOver: SPRING CREEK
0.4 M E OF IL 171, Will, IL
Built 1984 Load: 37.9 t ADT: 15,900
US 52
FairOver: DU PAGE RIVER
0.2 M E OF IL 59, Will, IL
Built 1990 Load: 37.9 t ADT: 23,000
EAGLE LAKE ROAD
FairOver: ROCK CR
0.50 MI W OF IL-50, Will, IL
Built 1900 Load: 37.9 t ADT: 75
Showing 11,551-11,600 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.