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 78
FairOver: KASKASKIA RIVER TRIB
2.5 MI NW HUMBOLDT, Coles, IL
Built 1960 Load: 29.8 t ADT: 50
CH 3
FairOver: POLECAT CREEK
1.2 MI S ASHMORE, Coles, IL
Built 1973 Load: 29.8 t ADT: 150
NB LSD Ramp to IL
FairOver: Land & Ogden Slip
400 N. & 484 E., Cook, IL
Built 1986 Load: 29.8 t ADT: 6,100
I-294 NB
FairOver: SALT CR
1 M N US 34 P20, Cook, IL
Built 1958 Load: 29.8 t ADT: 84,800
I-294 SB
FairOver: SALT CR
1 M N US 34 P20, Cook, IL
Built 1958 Load: 29.8 t ADT: 84,800
TR 27
FairOver: LAKE MATTOON
2.5 MI NE OF NEOGA, Cumberland, IL
Built 1958 Load: 29.8 t ADT: 50
BARBER GREENE RD
FairOver: E BR KISHWAUKEE RV
2190N 1570E, DeKalb, IL
Built 1960 Load: 29.8 t ADT: 1,750
CH 24
FairOver: JORDAN SLOUGH
0.5 MI S OF FAIRLAND, Douglas, IL
Built 1932 Load: 29.8 t ADT: 125
CH 11(FAS 686)
FairOver: STREAM
1 MI N OF DUDLEY, Edgar, IL
Built 1963 Load: 29.8 t ADT: 275
FAP-825 (ILL-15)
FairOver: STREAM
2.5 MI E ALBION, Edwards, IL
Built 1979 Load: 29.8 t ADT: 3,300
TR-585
FairOver: EAST FORK
0.7 MI W FARINA, Fayette, IL
Built 1940 Load: 29.8 t ADT: 75
TR-2
FairOver: TRIB HURRICANE CREEK
2 MI W CARLYLE GM MG, Fayette, IL
Built 1979 Load: 29.8 t ADT: 35
CH 19 PIPER THAWVI
FairOver: STREAM
1980N,1700E, Ford, IL
Built 1959 Load: 29.8 t ADT: 50
TR 25
FairOver: BIRCH CREEK
3 MI NE ROODHOUSE, Greene, IL
Built 1901 Load: 29.8 t ADT: 50
TR-49 (STOCKDALE R
FairOver: O'BRIEN RUN
.20 MI E TR 70, Grundy, IL
Built 1984 Load: 29.8 t ADT: 175
TR120 OLDMAZON RD
FairOver: MURRAY SLUICE
.81 MI S GR RIDGE RD, Grundy, IL
Built 1981 Load: 29.8 t ADT: 175
TR-210
FairOver: RECTOR CREEK
1.25 MI SW WALPOLE, Hamilton, IL
Built 1979 Load: 29.8 t ADT: 25
TR 297
FairOver: EDWARDS RIVER
4.0 MI NW KEWANEE, Henry, IL
Built 1959 Load: 29.8 t ADT: 75
TR 313
FairOver: SPRING CREEK
4 MI E BUCKLEY, Iroquois, IL
Built 1958 Load: 29.8 t ADT: 25
TR 61
FairOver: N MARTINTON #2
2.5 SW MARTINTON, Iroquois, IL
Built 1965 Load: 29.8 t ADT: 75
W CO LINE RD
FairOver: W BR BIG ROCK CREEK
0.4 MI N RT 30, Kane, IL
Built 1957 Load: 29.8 t ADT: 75
FABYAN PARKWAY
FairOver: BRANCH OF MILL CREEK
.4 MI E OF RANDALL R, Kane, IL
Built 1974 Load: 29.8 t ADT: 25,900
CH 9/FAS 309
FairOver: EXLINE SLOUGH
3.9 M E OF ILL 50, Kankakee, IL
Built 1939 Load: 29.8 t ADT: 1,700
CH 16
FairOver: ROCK CR
4.7 MI NE MANTENO, Kankakee, IL
Built 1971 Load: 29.8 t ADT: 1,900
TR 165A
FairOver: E BR HORSECREEK
0.5 MI E HERSCHER, Kankakee, IL
Built 1973 Load: 29.8 t ADT: 225
TR 220
FairOver: LITTLE BEAVER CREEK
2 MI E ST. ANNE, Kankakee, IL
Built 1976 Load: 29.8 t ADT: 75
TR-2
FairOver: THE SLOUGH
2 MI SW CHAUNCEY, Lawrence, IL
Built 1971 Load: 29.8 t ADT: 75
CONRAD RD
FairOver: STEWARD CREEK
1.2 MI W OF IL 251, Lee, IL
Built 1970 Load: 29.8 t ADT: 50
FRANKLIN ROAD
FairOver: UNNAMED STREAM
1.1 M N OF US RT 52, Lee, IL
Built 1963 Load: 29.8 t ADT: 550
TR 118B
FairOver: WOLF CREEK
1970 N, 1400 E, Livingston, IL
Built 1965 Load: 29.8 t ADT: 50
TR 188
FairOver: INDIAN CREEK
740 N, 2150 E, Livingston, IL
Built 1965 Load: 29.8 t ADT: 625
TR 97
FairOver: CREEK
1215 E, 2200 N, Livingston, IL
Built 1977 Load: 29.8 t ADT: 25
TR 212
FairOver: LAKE FORK CK
4 MI E CORNLAND, Logan, IL
Built 1961 Load: 29.8 t ADT: 20
TR 20 (TH-R65)
FairOver: SENACHWINE CREEK
T13N-R8E-4PM SEC 25, Marshall, IL
Built 1954 Load: 29.8 t ADT: 25
I 24 WB
FairOver: MASSAC CREEK
5 MI N US 45, Massac, IL
Built 1970 Load: 29.8 t ADT: 10,600
I 24 EB
FairOver: MASSAC CREEK
5 MI N OF US 45, Massac, IL
Built 1970 Load: 29.8 t ADT: 10,600
COUNTRY CLUB ROAD
FairOver: MASSAC CREEK
1.75 MI W ILL 145, Massac, IL
Built 1954 Load: 29.8 t ADT: 2,500
SEEMANN RD
FairOver: S BR KISHWAUKEE RIV.
0.5 MI S HEMMINGSEN, McHenry, IL
Built 1973 Load: 29.8 t ADT: 525
GRANGE RD
FairOver: COON CREEK
0.1 MI W OF BURMA RD, McHenry, IL
Built 1979 Load: 29.8 t ADT: 150
TR 93
FairOver: LICK CRK
2 MI SE CONCORD, Morgan, IL
Built 1900 Load: 29.8 t ADT: 75
CH 1(FAS 658)
FairOver: WEST OKAW RIVER
2.5 MI N LOVINGTON, Moultrie, IL
Built 1973 Load: 29.8 t ADT: 350
TR 45
FairOver: STREAM
2.4 MI SE DALTON CTY, Moultrie, IL
Built 1979 Load: 29.8 t ADT: 50
CHANA RD
FairOver: KYTE RIVER
6.0 MI N ASHTON, Ogle, IL
Built 1953 Load: 29.8 t ADT: 800
RIDGE RD (FAS 85)
FairOver: BNSF RR
3 MI. W. OF OREGON, Ogle, IL
Built 1991 Load: 29.8 t ADT: 2,350
US 24
FairOver: KICKAPOO CREEK
.5 MI E OF MCKINLEY, Peoria, IL
Built 1980 Load: 29.8 t ADT: 23,700
WILEY RD
FairOver: W BR KICKAPOO CREEK
NE1/4 18 ELMWOOD TWP, Peoria, IL
Built 1961 Load: 29.8 t ADT: 525
STONE SCHOOL ROAD
FairOver: BR TIBER CREEK
SW1/4-22-TRIVOLI, Peoria, IL
Built 1941 Load: 29.8 t ADT: 700
TR 173
FairOver: STREAM
2.0 MI SE CERRO GORD, Piatt, IL
Built 1967 Load: 29.8 t ADT: 35
IL 13 New Athens
FairOver: KASKASKIA RIVER
W OF NEW ATHENS, St. Clair, IL
Built 1972 Load: 29.8 t ADT: 6,900
WB CD TO IL3SB "O1
FairOver: UPRR, Access Roads, UPRR
PIER G1 TO ABUT O-10, St. Clair, IL
Built 1971 Load: 29.8 t ADT: 5,300
Showing 6,651-6,700 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.