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-90 SKYWAY
FairOver: GROUND SE CAL RV
VIAD, CALUMET RV, Cook, IL
Built 1958 Load: 35.6 t ADT: 28,700
FAS-1695 (CH-13)
FairOver: CREEK
0.4 MI N EATON, Crawford, IL
Built 1931 Load: 35.6 t ADT: 375
TR-227
FairOver: HONEY CREEK
S NEW HEBRON, Crawford, IL
Built 1983 Load: 35.6 t ADT: 25
CH 10 (FAS 543)
FairOver: STREAM
1 MI W PARNELL, De Witt, IL
Built 1968 Load: 35.6 t ADT: 250
US 30 FAP 573
FairOver: BN RR
.5 MI E OF SHABBONA, DeKalb, IL
Built 1982 Load: 35.6 t ADT: 3,050
IL 53 NB
FairOver: E BR DU PAGE RIVER
0.38 M N OF I-88, DuPage, IL
Built 1958 Load: 35.6 t ADT: 22,700
FAS-2720
FairOver: STREAM
N I-70 INT - ST ELMO, Fayette, IL
Built 1963 Load: 35.6 t ADT: 2,150
ILL 34
FairOver: STREAM E OF BENTON
2.4 MI E BENTON, Franklin, IL
Built 1957 Load: 35.6 t ADT: 3,650
CH 10
FairOver: TR EWING CREEK
NO 9 BLACKTOP, Franklin, IL
Built 1980 Load: 35.6 t ADT: 800
MUSKRAT RD - TR 23
FairOver: TRIB TO TURKEY CR
SW-35-T7NR2E, Fulton, IL
Built 1980 Load: 35.6 t ADT: 50
TR 25A CEMETERY RD
FairOver: I&M CANAL
W. OF MCLINDON RD, Grundy, IL
Built 1984 Load: 35.6 t ADT: 400
FAP 776/IL 242
FairOver: STREAM
5.5 MI S WAYNE CO LI, Hamilton, IL
Built 2002 Load: 35.6 t ADT: 1,250
IL 61
FairOver: FLOUR CREEK
2.8M E IL 94, BOWEN, Hancock, IL
Built 1927 Load: 35.6 t ADT: 1,250
IL 9/94
FairOver: LAMOINE RIVER
5.2M E IL 94 S, Hancock, IL
Built 1984 Load: 35.6 t ADT: 1,050
CO HWY 24
FairOver: S BRH OF LARRY'S CR
6.5 W FERRIS, Hancock, IL
Built 2005 Load: 35.6 t ADT: 850
TR 3
FairOver: BRANCH OF TYSON CR.
0.9 MI SW OF NIOTA, Hancock, IL
Built 1963 Load: 35.6 t ADT: 225
ILL 34
FairOver: PINHOOK CREEK
2.1 MI S OF HEROD, Hardin, IL
Built 1924 Load: 35.6 t ADT: 1,200
CH 13 FAS 1221
FairOver: GREEN RIVER
5.0 MI NW GENESEO, Henry, IL
Built 1975 Load: 35.6 t ADT: 550
CH 30
FairOver: TRIB SPRING CREEK
2 MI W ILL49, Iroquois, IL
Built 1975 Load: 35.6 t ADT: 75
FAS 335 CH 10
FairOver: PIGEON CREEK
0.1 MI W RTE 49, Iroquois, IL
Built 1978 Load: 35.6 t ADT: 350
TR 225
FairOver: TRIB TO COON CREEK
2.0 S,1 W SHELDON, Iroquois, IL
Built 1974 Load: 35.6 t ADT: 50
I 64 WB
FairOver: E&W RR
2 MI E ILL-142, Jefferson, IL
Built 1974 Load: 35.6 t ADT: 6,350
US 20
FairOver: APPLE RIVER
2 MI. W. ELIZABETH, Jo Daviess, IL
Built 1925 Load: 35.6 t ADT: 4,550
TR 32
FairOver: W BR OF HORSE CR
1.25 MI W HERSCHER, Kankakee, IL
Built 1973 Load: 35.6 t ADT: 50
TR 99
FairOver: UNNAMED CREEK
3.5 MI SE MOMENCE, Kankakee, IL
Built 1982 Load: 35.6 t ADT: 100
IL 60
FairOver: SEAVEY DRAIN DITCH
0.9 M W OF IL 21, Lake, IL
Built 1993 Load: 35.6 t ADT: 34,400
CH 44
FairOver: LONG POINT CREEK
4.10 MI S OF ILL 17, LaSalle, IL
Built 1984 Load: 35.6 t ADT: 1,300
TR 416-A
FairOver: BRUMBACK CREEK
E 25TH N 3400, LaSalle, IL
Built 1964 Load: 35.6 t ADT: 200
E 8TH TR 142B
FairOver: LONG POINT CREEK
E8TH N010, LaSalle, IL
Built 1980 Load: 35.6 t ADT: 25
BROOKLYN RD
FairOver: GREEN RIVER TRIB
0.5 MI S OF US RT 30, Lee, IL
Built 1986 Load: 35.6 t ADT: 275
TR 304
FairOver: S FORK LAKE FORK CK
1 W 2.5 MI S LATHAM, Logan, IL
Built 1969 Load: 35.6 t ADT: 25
TR 23
FairOver: PRAIRIE CK
3 S .5 MI E SAN JOSE, Logan, IL
Built 1964 Load: 35.6 t ADT: 50
FAI-57 NB
FairOver: E FORK KASKASKIA RV
2 MI S FAYETTE C L, Marion, IL
Built 1970 Load: 35.6 t ADT: 9,050
FAI-57 SB
FairOver: E FORK KASKASKIA RV
2 MI S FAYETTE CO LN, Marion, IL
Built 1969 Load: 35.6 t ADT: 9,050
US 14
FairOver: FOX RIVER
1 M W OF IL 22, McHenry, IL
Built 1990 Load: 35.6 t ADT: 25,500
STATE LINE ROAD
FairOver: PISCASAW CREEK
3.2 MI W OF US 14, McHenry, IL
Built 1967 Load: 35.6 t ADT: 850
KISHWAUKEE VALLEY
FairOver: RUSH CREEK
3.0M.W.OF IL-23, McHenry, IL
Built 1990 Load: 35.6 t ADT: 3,500
FAS 1477 CH 40
FairOver: SALT CREEK
1.0 MI NE LEROY, McLean, IL
Built 1974 Load: 35.6 t ADT: 600
Ill 17
FairOver: Edwards River
5 mi W of Joy, Mercer, IL
Built 2019 Load: 35.6 t ADT: 1,500
TR 198
FairOver: N. CAMP CREEK
SW-18-T15NR2W, Mercer, IL
Built 1983 Load: 35.6 t ADT: 50
US 67, ILL 100 & 1
FairOver: COON RUN
.3MI N JCT67/100/104, Morgan, IL
Built 1970 Load: 35.6 t ADT: 4,200
TALBOTT RD
FairOver: BR BUFFALO CREEK
4 MI SW POLO, Ogle, IL
Built 1974 Load: 35.6 t ADT: 125
ILL 26
FairOver: SNAG CREEK
7.3 MI S OF ILL 17, Peoria, IL
Built 1992 Load: 35.6 t ADT: 2,350
TR 174
FairOver: BEAUCOUP CREEK
0.5 MI N OF FAS 866, Perry, IL
Built 1957 Load: 35.6 t ADT: 25
FAS 858
FairOver: CAMPS CREEK
SO. OF RUMA, Randolph, IL
Built 1997 Load: 35.6 t ADT: 450
FAP-116 (ILL-130)
FairOver: EAST FORK FOX RIVER
6 MI S JASPER CO LN, Richland, IL
Built 1927 Load: 35.6 t ADT: 5,800
ILL RT 92
FairOver: FANCY CREEK
.5 MI E ANDALUSIA, Rock Island, IL
Built 1937 Load: 35.6 t ADT: 4,450
IL 29/J D JONES PK
FairOver: SPRING CR OVERFLOW
.34M S VETERANS/IL 4, Sangamon, IL
Built 1975 Load: 35.6 t ADT: 8,300
TR 242
FairOver: CRANE CREEK
4.0 S OF RUSHVILLE, Schuyler, IL
Built 1977 Load: 35.6 t ADT: 75
CH 11
FairOver: CEDAR CRK
1.25 MI S HUNTSVILLE, Schuyler, IL
Built 1981 Load: 35.6 t ADT: 75
Showing 10,951-11,000 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.