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
CO HWY 11
FairOver: SWANWICK CREEK
3 MI NE OF WINKLE, Perry, IL
Built 1980 Load: 36.0 t ADT: 175
FAS 534(CH 2)
FairOver: MADDEN CREEK
3.5 MI S MANSFIELD, Piatt, IL
Built 1939 Load: 36.0 t ADT: 850
I-74 (EB)
FairOver: S BRANCH SALT CREEK
1.5 MI E OF US 54, Piatt, IL
Built 1970 Load: 36.0 t ADT: 10,750
I-74 (WB)
FairOver: S BRANCH SALT CREEK
1.5 MI E OF US 54, Piatt, IL
Built 1970 Load: 36.0 t ADT: 10,750
IL 48(FAP 760)
FairOver: FRIENDS CREEK DITCH
3 MI N OF I-72, Piatt, IL
Built 1987 Load: 36.0 t ADT: 1,250
FAP 760 (CH 17)
FairOver: SANGAMON RIVER
4.3 MI S OF CISCO, Piatt, IL
Built 1978 Load: 36.0 t ADT: 800
IL 106
FairOver: THE SNY
3.7M W IL 96/HULL, Pike, IL
Built 1930 Load: 36.0 t ADT: 1,350
I-72
FairOver: DRAINAGE DITCH
1.37M E I-172, Pike, IL
Built 1986 Load: 36.0 t ADT: 9,400
TR 95A-SANDUSKY RD
FairOver: CACHE RIVER
2 MI SW PULASKI, Pulaski, IL
Built 1994 Load: 36.0 t ADT: 375
ILL 3
FairOver: KASKASKIA RIVER
IN EVANSVILLE, Randolph, IL
Built 1971 Load: 36.0 t ADT: 3,350
ILL 92 FAP 599
FairOver: MISSISSIPPI RIVER
IN MUSCATINE, Rock Island, IL
Built 1972 Load: 36.0 t ADT: 3,950
I-55 (SB)
FairOver: ILLINOIS CENTRAL RR
.3M N IL 54/SANG. AV, Sangamon, IL
Built 1963 Load: 36.0 t ADT: 14,600
ILL 97
FairOver: RICHLAND CREEK
2.5M S SALISBURY, Sangamon, IL
Built 1936 Load: 36.0 t ADT: 3,850
ILL 100
FairOver: WALNUT CR OVERFLOW
1.5 MI N IL 106, Scott, IL
Built 1984 Load: 36.0 t ADT: 1,000
ILL 9
FairOver: MACKINAW RIVER
1.5 MI W OF MACKINAW, Tazewell, IL
Built 1929 Load: 36.0 t ADT: 2,700
FAS 2936 (UNMARKED
FairOver: BR. BIGCREEK
DONGOLA, Union, IL
Built 1986 Load: 36.0 t ADT: 1,700
CH 11
FairOver: CYPRESS CREEK
3.3 MI S IL 146, Union, IL
Built 1989 Load: 36.0 t ADT: 50
TR 263
FairOver: S. FORK OF MUD CREEK
4MI SW OF LIVELY GRV, Washington, IL
Built 1999 Load: 36.0 t ADT: 200
FAP-823 (ILL-15)
FairOver: JOHNSON CREEK
ECL FAIRFIELD, Wayne, IL
Built 1982 Load: 36.0 t ADT: 4,850
I-88 EB
FairOver: BN RR (ABANDON)
.5 MI S US 30, Whiteside, IL
Built 1972 Load: 36.0 t ADT: 6,600
I-355 NB & SB
FairOver: BN&SF RR
1M E OF JOLIET RD, Will, IL
Built 2008 Load: 36.0 t ADT: 39,150
SECOND AVENUE
FairOver: HICKORY CREEK
0.5 MI E RICHARD ST, Will, IL
Built 1935 Load: 36.0 t ADT: 1,350
ILL 251 NB
FairOver: N KINNIKINNICK CR
0.1 M S HONONEGAH RD, Winnebago, IL
Built 1967 Load: 36.0 t ADT: 27,200
ILL 251 SB
FairOver: N KINNIKINNICK CR
0.1 M S HONONEGAH RD, Winnebago, IL
Built 1967 Load: 36.0 t ADT: 27,200
IL 70
FairOver: DRAINAGE DITCH
.1 MI N SUMMERDALE, Winnebago, IL
Built 1962 Load: 36.0 t ADT: 5,000
ILL 116
FairOver: PANTHER CREEK
1.49 MI E OF IL117, Woodford, IL
Built 1997 Load: 36.0 t ADT: 4,450
TR 165
FairOver: PANTHER CREEK
1.25 MI E SECOR, Woodford, IL
Built 1980 Load: 36.0 t ADT: 100
TR 164
FairOver: S BR HALLENBACK CR
2 MI W OF ILL 116, Woodford, IL
Built 1989 Load: 36.0 t ADT: 25
CH 10/FAS 782
FairOver: TRIB TO SPRING BR
CO HWY 10 OV SPRINGB, Bond, IL
Built 1984 Load: 36.3 t ADT: 350
IDEAL ROAD
FairOver: ROCK CREEK
3 MI W MILLEDGEVILLE, Carroll, IL
Built 1974 Load: 36.3 t ADT: 450
I-57(SB)
FairOver: Norfolk Southern Railway
SW OF TOLONO, Champaign, IL
Built 1963 Load: 36.3 t ADT: 11,550
FAS 502 (CH 20)
FairOver: SPOON RIVER
2.8 MI W OF ROYAL, Champaign, IL
Built 1947 Load: 36.3 t ADT: 1,150
JOHN ST (FAU 7128)
FairOver: COPPER SLOUGH
.25 MI W DUNCAN RD, Champaign, IL
Built 1967 Load: 36.3 t ADT: 2,200
WILLIAM ST
FairOver: COPPER SLOUGH
.25 MI W DUNCAN RD, Champaign, IL
Built 1966 Load: 36.3 t ADT: 950
TR 189
FairOver: BEAR CREEK
2.5MI W TAYLORVILLE, Christian, IL
Built 1969 Load: 36.3 t ADT: 125
TR 106
FairOver: BRUSH CREEK
1.8 M E PALMER, Christian, IL
Built 1981 Load: 36.3 t ADT: 50
I- 55 WB STEVENSON
FairOver: RR - BRC
0.25 M E ILL 50, Cook, IL
Built 1963 Load: 36.3 t ADT: 67,900
CHICAGO HEIGHTS RD
FairOver: BUTTERFIELD CREEK
1.3 M NE of IL 1, Cook, IL
Built 1921 Load: 36.3 t ADT: 6,550
TORRENCE AVE
FairOver: RR - CSXT & IHB
0.8 M N IL 83 Sibley, Cook, IL
Built 1956 Load: 36.3 t ADT: 17,800
I-294 SB
FairOver: C&NW RR
0.7 M S US 20 P20, Cook, IL
Built 1958 Load: 36.3 t ADT: 75,250
I-294 NB
FairOver: C&NW RR
0.7 M S US 20 P20, Cook, IL
Built 1958 Load: 36.3 t ADT: 75,250
I-294 NB
FairOver: FLAG CR SOUTH
0.2 M N US 66 P10, Cook, IL
Built 1958 Load: 36.3 t ADT: 59,750
FAS-697 (CH-9)
FairOver: CREEK
S NEW HEBRON, Crawford, IL
Built 1909 Load: 36.3 t ADT: 800
IL130(FAP 820)
FairOver: EMBARRAS RIVER
0.7 MI S of 700N, Douglas, IL
Built 1955 Load: 36.3 t ADT: 2,000
ARDMORE AVE
FairOver: CHICAGO, CENTRAL & P
0.7 M N ST CHARLES R, DuPage, IL
Built 1978 Load: 36.3 t ADT: 7,550
TR-241
FairOver: FULFER CREEK
2.5 MI N MASON, Effingham, IL
Built 1991 Load: 36.3 t ADT: 100
TR 24 DIX
FairOver: DICKERSON SLOUGH
390N,600E, Ford, IL
Built 1970 Load: 36.3 t ADT: 100
DEPOT RD - TR 110
FairOver: BRANCH OF OTTER CR
SE-25-T4NR1E, Fulton, IL
Built 1981 Load: 36.3 t ADT: 25
TR 131
FairOver: BEAR CREEK
6.9 M SE OF WHITE HA, Greene, IL
Built 1977 Load: 36.3 t ADT: 25
TR-275
FairOver: DRAINAGE DITCH
3.7 MI SW ELDRED, Greene, IL
Built 1981 Load: 36.3 t ADT: 50
Showing 11,101-11,150 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.