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 40
FairOver: CSXRR
3 MI W ILL 127, Bond, IL
Built 1991 Load: 41.5 t ADT: 2,150
ILL 78
FairOver: TRIB E FORK PLUM RIV
4 MI N MT CARROLL, Carroll, IL
Built 1990 Load: 41.5 t ADT: 625
ARGO FAY ROAD
FairOver: JOHNSON CREEK TRIB.
2 MI. SW OF ARGO FAY, Carroll, IL
Built 1994 Load: 41.5 t ADT: 1,600
I-74(EB)
FairOver: SALT FORK RIVER
W EDGE OF ST JOSEPH, Champaign, IL
Built 1959 Load: 41.5 t ADT: 14,150
I-74(WB)
FairOver: SALT FORK RIVER
W EDGE OF ST JOSEPH, Champaign, IL
Built 1959 Load: 41.5 t ADT: 14,150
US 50
FairOver: SHOAL CREEK
2.5 MI E OF BREESE, Clinton, IL
Built 1973 Load: 41.5 t ADT: 5,500
SBI 16
FairOver: UNION DRAINAGE DITCH
2.0 MI W CHARLESTON, Coles, IL
Built 1981 Load: 41.5 t ADT: 3,350
FAU 7702(CH 7)
FairOver: STREAM
SE EDGE OF MATTOON, Coles, IL
Built 1971 Load: 41.5 t ADT: 3,550
FAU-1560 (91ST ST)
FairOver: FLAG CREEK
0.3 M E DUPAGE P10, Cook, IL
Built 1932 Load: 41.5 t ADT: 1,200
I-74 (WB)
FairOver: SALT CREEK
E FARMER CITY, De Witt, IL
Built 1970 Load: 41.5 t ADT: 10,750
IL 53
FairOver: PRENTISS CREEK
2.2 M S OF US 34, DuPage, IL
Built 1987 Load: 41.5 t ADT: 25,400
FAP 95 - IL 33
FairOver: BIG SALT CREEK
SE CL EFFINGHAM, Effingham, IL
Built 2008 Load: 41.5 t ADT: 7,500
FAP-750 (ILL-185)
FairOver: LITTLE HICKORY CREEK
7.5 MI SE US 40, Fayette, IL
Built 1991 Load: 41.5 t ADT: 1,000
US 24
FairOver: N F VERMILION RIVER
1.08 MI E OF ILL 115, Ford, IL
Built 1987 Load: 41.5 t ADT: 2,200
TR 369A
FairOver: TRIB TO PIGEON CR
1.2MI W IL49, Iroquois, IL
Built 1975 Load: 41.5 t ADT: 50
ILL RTE 127
FairOver: BIG MUDDY RIVER
ECL OF MURPHYSBORO, Jackson, IL
Built 1925 Load: 41.5 t ADT: 5,450
ILL 13 WB
FairOver: MUD CREEK
1 MI. E. MURPHYSBORO, Jackson, IL
Built 1974 Load: 41.5 t ADT: 15,100
FAS-2869 (ILL-37)
FairOver: CASEY FORK
2 MI S ILL-148, Jefferson, IL
Built 1921 Load: 41.5 t ADT: 4,600
IL 38
FairOver: FOX RIVER
IL 38 & FOX RIVER, Kane, IL
Built 1992 Load: 41.5 t ADT: 25,600
MONTGOMERY ROAD
FairOver: WAUBONSIE CREEK
0.3 MI NW US RTE 34, Kane, IL
Built 1977 Load: 41.5 t ADT: 10,450
FAI-57 SB
FairOver: SOLDIER CR
1.8 MI N OF ILL 17, Kankakee, IL
Built 1955 Load: 41.5 t ADT: 14,450
FAI-57 NB
FairOver: SOLDIER CR
1.8 MI N OF ILL RT17, Kankakee, IL
Built 1955 Load: 41.5 t ADT: 14,450
ILL 1 & 17
FairOver: KKK RIVER
MOMENCE, Kankakee, IL
Built 1986 Load: 41.5 t ADT: 9,750
I-57 SB
FairOver: CN RAILROAD
0.3 MI NW IL 50, Kankakee, IL
Built 2012 Load: 41.5 t ADT: 13,700
SHERIDAN RD
FairOver: BOYINGTON RAVINE
HIGHLAND PARK, Lake, IL
Built 1929 Load: 41.5 t ADT: 2,500
CO RD 43
FairOver: TOMAHAWK CREEK
E 8TH,N 3740, LaSalle, IL
Built 1933 Load: 41.5 t ADT: 500
IL 2 WB
FairOver: DRAINAGE DITCH
E SAUK VAL. COLLEGE, Lee, IL
Built 2010 Load: 41.5 t ADT: 11,500
OLD RT 66 FAS 294
FairOver: DRAIN DT
7.71 M S OF ILL 116, Livingston, IL
Built 1954 Load: 41.5 t ADT: 3,100
FAP 786 / IL 170
FairOver: BR OF BAKER RUN
6.94 MI S OF ILL 17, Livingston, IL
Built 1990 Load: 41.5 t ADT: 1,550
US 36(FAP 323)
FairOver: CREEK
W OF CASNER, Macon, IL
Built 1928 Load: 41.5 t ADT: 2,700
IL 48(FAP 714)
FairOver: MOSQUITO CREEK TRIB
1 MI NE BLUE MOUND, Macon, IL
Built 1928 Load: 41.5 t ADT: 4,500
I-72 (EB)
FairOver: STREAM
1 MI SW HARRISTOWN, Macon, IL
Built 1976 Load: 41.5 t ADT: 7,400
I-72 (WB)
FairOver: STREAM
1 MI SW HARRISTOWN, Macon, IL
Built 1976 Load: 41.5 t ADT: 7,400
IL 111
FairOver: S BR LITTLE PIASA CR
4.0 M S JCT IL 16, Macoupin, IL
Built 1929 Load: 41.5 t ADT: 4,550
I-55 NB
FairOver: UPRR
N OF NEW DOUGLAS RD, Madison, IL
Built 1973 Load: 41.5 t ADT: 14,400
TR 228 BLACKJACK R
FairOver: MILL CREEK
4.0 MI SE TROY, Madison, IL
Built 1976 Load: 41.5 t ADT: 275
ILL 26
FairOver: CROW CREEK OVERFLOW
6.3 MI S OF ILL 17, Marshall, IL
Built 1993 Load: 41.5 t ADT: 2,350
FAP 315 IL 336EB
FairOver: TRIB KILLJORDAN CR
SOUTHWEST OF MACOMB, McDonough, IL
Built 2008 Load: 41.5 t ADT: 3,800
FAP-407 (IL-336WB)
FairOver: Trib Killjordon Crk
SW of Macomb, McDonough, IL
Built 2008 Load: 41.5 t ADT: 3,800
FAS-441 (CH-26)
FairOver: Hogwallow Branch
CTR-34-T4NR4W, McDonough, IL
Built 1969 Load: 41.5 t ADT: 175
IL 47
FairOver: NIPPERSINK CREEK
6.3 M S STATE LINE, McHenry, IL
Built 1985 Load: 41.5 t ADT: 4,400
DOTY RD
FairOver: KISHWAUKEE RIVER
0.3 M SO US-14, McHenry, IL
Built 2000 Load: 41.5 t ADT: 1,700
US 51 SB CENTER ST
FairOver: Norfolk Southern Railway
US 51 SB IN BLMNGTN, McLean, IL
Built 1971 Load: 41.5 t ADT: 8,800
I-72 WB
FairOver: BAY CREEK
.8M W NEW SALEM INT, Pike, IL
Built 1989 Load: 41.5 t ADT: 4,425
I-72 EB
FairOver: BAY CREEK
.8M W NEW SALEM INT, Pike, IL
Built 1989 Load: 41.5 t ADT: 4,425
ILL 71
FairOver: COFFEE CREEK
0.6mi E of IL 26, Putnam, IL
Built 1993 Load: 41.5 t ADT: 3,400
Municipal St.
FairOver: UNNAMED STREAM
.25 MI E 44TH ST-R I, Rock Island, IL
Built 1988 Load: 41.5 t ADT: 3,400
ILL 34
FairOver: BANKSTON CREEK
1.9 MI N HARRISBURG, Saline, IL
Built 1932 Load: 41.5 t ADT: 3,100
VETERANS / IL 4 (N
FairOver: NS RR & GATEWAY W RR
.2M N I-72, Sangamon, IL
Built 1990 Load: 41.5 t ADT: 31,800
CH 18
FairOver: TRIB OF MUD CREEK
W EDGE OF HENTON, Shelby, IL
Built 1961 Load: 41.5 t ADT: 225
Showing 12,301-12,350 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.