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
I-294 NB
FairOver: C&NW RR
2.5 M SW ILL 19 P9, Cook, IL
Built 1958 Load: 35.3 t ADT: 86,550
TR 221
FairOver: CREEK
1.7 MI NE PIERCEBURG, Crawford, IL
Built 2016 Load: 35.3 t ADT: 50
FAS 522(CH 6)
FairOver: EMBARRAS RIVER
IN VILLA GROVE, Douglas, IL
Built 1937 Load: 35.3 t ADT: 2,400
CH-43 County Farm
FairOver: KLEIN CREEK
0.4 M S ST CHAS RD, DuPage, IL
Built 1990 Load: 35.3 t ADT: 15,300
TR 261
FairOver: HICKORY GROVE CREEK
1.75 MI W OF DUDLEY, Edgar, IL
Built 1987 Load: 35.3 t ADT: 50
FAS-1724 (CH-23)
FairOver: LITTLE WABASH RIVER
2.5 MI W WATSON, Effingham, IL
Built 1981 Load: 35.3 t ADT: 475
SBI-11 (ILL-140)
FairOver: OWL CREEK
.3 MI E BOND CO LN, Fayette, IL
Built 1992 Load: 35.3 t ADT: 600
TR 2 MONA
FairOver: STREAM
3420 N,1800E, Ford, IL
Built 1964 Load: 35.3 t ADT: 50
FAS 447-CH 17
FairOver: SPOON RIVER
N1/2-5-T7NR2E, Fulton, IL
Built 1966 Load: 35.3 t ADT: 375
TR 260A
FairOver: TAYLOR CREEK
1M W ROCKBRIDGE, Greene, IL
Built 1977 Load: 35.3 t ADT: 200
US 6
FairOver: DRAINAGE DITCH
2.5 MI E OF ILL 170, Grundy, IL
Built 1980 Load: 35.3 t ADT: 3,200
FAP-849 (ILL-142)
FairOver: BIG CREEK
6.1 MI SE JEFF CO LN, Hamilton, IL
Built 1990 Load: 35.3 t ADT: 2,350
US 52
FairOver: IROQUOIS RIVER
3.31 MI N OF US 24, Iroquois, IL
Built 1988 Load: 35.3 t ADT: 1,200
ILL 49
FairOver: BR PIGEON CREEK
2.4 MI N OF ILL 9, Iroquois, IL
Built 1990 Load: 35.3 t ADT: 1,050
TR 438 A
FairOver: BEAVER CR
.5 MI N CH3, Iroquois, IL
Built 1975 Load: 35.3 t ADT: 25
TR 454
FairOver: TRIB TO IROQUOIS RV
2 MI E OF IROQUOIS, Iroquois, IL
Built 1970 Load: 35.3 t ADT: 75
IL 149-FAP 873
FairOver: BEAUCOUP CREEK
3.3 MI W DESOTO, Jackson, IL
Built 2001 Load: 35.3 t ADT: 2,800
TR 221
FairOver: DRAINAGE DITCH
E 1/2 SEC 10-9-4, Jackson, IL
Built 1979 Load: 35.3 t ADT: 10
FAS 1916
FairOver: BEAUCOUP CREEK
3 MI N OF FAP686-IL4, Jackson, IL
Built 1987 Load: 35.3 t ADT: 375
FAP-116 (ILL-130)
FairOver: BRANCH OF FOX RIVER
.75 MI S ST MARIE RD, Jasper, IL
Built 1983 Load: 35.3 t ADT: 3,900
ILL RT 78
FairOver: MUDDY PLUM RIVER
2.5 MI N CARROLL CO., Jo Daviess, IL
Built 1982 Load: 35.3 t ADT: 600
RANDALL ROAD
FairOver: UNION PACIFIC RR
1.8 MI SW GENEVA, Kane, IL
Built 1967 Load: 35.3 t ADT: 31,400
STEVENS RD
FairOver: W. TRIB. OF OTTER CR
0.2 M N SILVER GLEN, Kane, IL
Built 1972 Load: 35.3 t ADT: 3,700
STATION ST
FairOver: KANKAKEE RIVER
800' SO OF IL 17, Kankakee, IL
Built 1924 Load: 35.3 t ADT: 5,700
TR 125
FairOver: GAR CREEK
3 MI SW OF KANKAKEE, Kankakee, IL
Built 1971 Load: 35.3 t ADT: 250
TR 92A
FairOver: TOWER CREEK
1MI W MOMENCE, Kankakee, IL
Built 1973 Load: 35.3 t ADT: 225
PFUND CT
FairOver: WAUBANSEE CK
0.25 MI N OF US 34, Kendall, IL
Built 1930 Load: 35.3 t ADT: 50
TR-71 OLD MILL ROA
FairOver: FRANKLIN CREEK
2.3 MI W FRANKLIN GR, Lee, IL
Built 1988 Load: 35.3 t ADT: 100
ILL 23
FairOver: LONG POINT CR
3.46 MI S OF ILL 17, Livingston, IL
Built 1982 Load: 35.3 t ADT: 1,650
IL 170 /FAP 786
FairOver: BR OF MUD CREEK
3.82 MI S OF ILL 17, Livingston, IL
Built 1990 Load: 35.3 t ADT: 1,300
ILL 116
FairOver: DRAIN DT
7.11 MI W OF I-55, Livingston, IL
Built 1970 Load: 35.3 t ADT: 3,050
ILL 17
FairOver: DRAINAGE DITCH
7.75 MI W OF ILL 47, Livingston, IL
Built 1971 Load: 35.3 t ADT: 1,800
FAI 155 SB
FairOver: ICG RR
2.7MI S I-155/IL136, Logan, IL
Built 1988 Load: 35.3 t ADT: 5,300
FAI 155 NB
FairOver: ICG RR
2.7MI S I-155/IL136, Logan, IL
Built 1988 Load: 35.3 t ADT: 5,300
W MAIN ST (FAU 738
FairOver: STEVENS CREEK
W EDGE OF DECATUR, Macon, IL
Built 1988 Load: 35.3 t ADT: 2,300
TR 259A(BETHEL RD)
FairOver: MOSQUITO CREEK
3 MI NE BLUE MOUND, Macon, IL
Built 1980 Load: 35.3 t ADT: 35
CH 41(WYCKLES RD)
FairOver: LAKE FORK CREEK
3 MI NE WARRENSBURG, Macon, IL
Built 1985 Load: 35.3 t ADT: 75
TOWNSHIP ROAD 227
FairOver: HURRICANE CREEK
.5MI W CARLINVILLE, Macoupin, IL
Built 1981 Load: 35.3 t ADT: 125
FAI 270 FR RD 610
FairOver: COUNTY DITCH
1 mi W IL 157 on FR, Madison, IL
Built 1964 Load: 35.3 t ADT: 25
BROADWAY/FAU 9097
FairOver: ICG,N&W RR
NEAR E C L VENICE, Madison, IL
Built 1936 Load: 35.3 t ADT: 7,450
IL 143
FairOver: WOOD RIVERCREEK
1.27 M W ILL 3, Madison, IL
Built 1967 Load: 35.3 t ADT: 10,500
TR-216
FairOver: CROOKED CREEK
3 MI SW SALEM, Marion, IL
Built 1982 Load: 35.3 t ADT: 225
ILL 89
FairOver: SANDY CREEK
1.87 MI S OF ILL 18, Marshall, IL
Built 1928 Load: 35.3 t ADT: 2,200
ILL. 26
FairOver: SNAG CREEK OVERFLOW
.25 MI N COUNTY LINE, Marshall, IL
Built 1991 Load: 35.3 t ADT: 2,350
RIVER ROAD
FairOver: RUSH CREEK
0.05 M E MILLER RD, McHenry, IL
Built 1982 Load: 35.3 t ADT: 1,400
US 136
FairOver: SALT CREEK
5.5 MI E OF US 150, McLean, IL
Built 1989 Load: 35.3 t ADT: 1,000
ATHENS RD.
FairOver: SANGAMON RIVER
JCT IL97 & ATHENS RD, Menard, IL
Built 1991 Load: 35.3 t ADT: 1,800
TR 79
FairOver: CLARY CREEK
5MI S OAKFORD, Menard, IL
Built 1996 Load: 35.3 t ADT: 75
TR 215
FairOver: WILDCAT CR
NW-9-T13NR4W, Mercer, IL
Built 1971 Load: 35.3 t ADT: 10
TR 111
FairOver: CAMP CREEK
NW-8-T14NR4W, Mercer, IL
Built 1981 Load: 35.3 t ADT: 25
Showing 10,851-10,900 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.