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 41D
FairOver: MUD CREEK
1295 E, 2800 N, Livingston, IL
Built 1962 Load: 27.5 t ADT: 75
TR 254A
FairOver: TRIB S F VERMILION R
715 N, 3100 E, Livingston, IL
Built 1962 Load: 27.5 t ADT: 50
TR 182
FairOver: INDIAN CREEK
275 N, 2050 E, Livingston, IL
Built 1969 Load: 27.5 t ADT: 275
BURTON VIEW RD
FairOver: SUGAR CK OVERFLOW
2.5 MI N BURTONVIEW, Logan, IL
Built 1964 Load: 27.5 t ADT: 300
TR 408
FairOver: OTTER CRK.
1 MI W GIRARD, Macoupin, IL
Built 1900 Load: 27.5 t ADT: 125
US 50
FairOver: W Trib to Prairie Cr
NE OF SANDOVAL, Marion, IL
Built 1923 Load: 27.5 t ADT: 6,050
FAS 572 CO HWY 5
FairOver: CRANE CREEK
3 MI E OF KILBOURNE, Mason, IL
Built 1956 Load: 27.5 t ADT: 250
THAYER ROAD
FairOver: BR OF NIPPERSINK CR
1.8 MI E OF IL 47, McHenry, IL
Built 1954 Load: 27.5 t ADT: 750
TR 121
FairOver: HENLINE DITCH
4.0 MI NW COLFAX, McLean, IL
Built 1958 Load: 27.5 t ADT: 50
FAS 573
FairOver: LOCAL DITCH
0.1 MI W GREENVIEW, Menard, IL
Built 1960 Load: 27.5 t ADT: 450
TR 105
FairOver: JONATHAN CREEK
2.2 MI NE SULLIVAN, Moultrie, IL
Built 1960 Load: 27.5 t ADT: 75
ILL 17
FairOver: SENACHWINE CR TRIB
4.6 MI E OF ILL 40, Peoria, IL
Built 1929 Load: 27.5 t ADT: 500
TR 50
FairOver: STREAM
1 MI SW OF HARRIS, Piatt, IL
Built 1969 Load: 27.5 t ADT: 50
I-72 (EB)
FairOver: ILLINOIS RIVER
3.7M W IL 100, Pike, IL
Built 1988 Load: 27.5 t ADT: 4,950
I-88
FairOver: STREAM
2 MI N PORT BYRON RD, Rock Island, IL
Built 1976 Load: 27.5 t ADT: 12,500
TR 211 1.755
FairOver: SPRING CREEK
1.5 NW OF BERLIN, Sangamon, IL
Built 1963 Load: 27.5 t ADT: 50
TR 1 MONT. CO.
FairOver: HORSE CREEK
4.5 MI SE DIVERNON, Sangamon, IL
Built 1963 Load: 27.5 t ADT: 25
TR 5 (11N)
FairOver: WOLF CREEK
1.5 NE WILLIAMSVILLE, Sangamon, IL
Built 1977 Load: 27.5 t ADT: 75
TR 29
FairOver: STREAM
3 MI N FINDLAY, Shelby, IL
Built 1970 Load: 27.5 t ADT: 75
TR 223
FairOver: BILL'S CREEK
2.0 MI NE STRASBURG, Shelby, IL
Built 1917 Load: 27.5 t ADT: 100
26th
FairOver: NSRR
0.2mi SW of IL 15, St. Clair, IL
Built 1936 Load: 27.5 t ADT: 6,150
FAS 509(CH 23)
FairOver: SWANK CREEK
IN INDIANOLA, Vermilion, IL
Built 1937 Load: 27.5 t ADT: 900
FAS-2818
FairOver: HORSE CREEK
2 MI N KEENES, Wayne, IL
Built 1966 Load: 27.5 t ADT: 950
I- 55 SB
FairOver: KANKAKEE RIVER
7.4 M S OF US 6, Will, IL
Built 1956 Load: 27.5 t ADT: 22,100
TR 217
FairOver: Wolf Creek
1 MI NE KAPPA, Woodford, IL
Built 1962 Load: 27.5 t ADT: 75
TR 2B LYMAN
FairOver: STREAM
1630N 1800E, Ford, IL
Built 1973 Load: 27.7 t ADT: 75
CH 10/FAS 782
FairOver: SPRING BRANCH
3.75M N KEYSPORT, Bond, IL
Built 1954 Load: 27.9 t ADT: 350
S. APPLETON ROAD
FairOver: KISHWAUKEE RIVER
S OF LINCOLN AVE, Boone, IL
Built 1964 Load: 27.9 t ADT: 11,700
TR 21
FairOver: DICKERSON SLOUGH
4.5 N OF FISHER, Champaign, IL
Built 1975 Load: 27.9 t ADT: 50
TR 165 A
FairOver: DELMAN BRANCH
1 MI S. KINCAID, Christian, IL
Built 1900 Load: 27.9 t ADT: 100
FAS 2703(KIN-LOU)
FairOver: STREAM
8.5 MI W LOUISVILLE, Clay, IL
Built 1938 Load: 27.9 t ADT: 500
TR-396
FairOver: SUGAR CREEK
5 MI SE SAILOR SPRIN, Clay, IL
Built 1949 Load: 27.9 t ADT: 50
CENTRAL RD
FairOver: SALT CREEK
0.4 M E ILL 53 P5, Cook, IL
Built 1962 Load: 27.9 t ADT: 2,350
SCOTT AVE
FairOver: UNION PACIFIC RR
0.08M NE.GREEN BAY R, Cook, IL
Built 1940 Load: 27.9 t ADT: 1,850
TR-265
FairOver: HONEY CREEK
2.5 MI SW NEW HEBRON, Crawford, IL
Built 1983 Load: 27.9 t ADT: 20
TR 140
FairOver: COON CREEK
1.5 MI E OF CLINTON, De Witt, IL
Built 1970 Load: 27.9 t ADT: 250
SHABBONA GROVE RD
FairOver: LITTLE INDIAN CREEK
700N 740E, DeKalb, IL
Built 1955 Load: 27.9 t ADT: 275
IL 53 NB
FairOver: MORTON ARBORETUM DR
0.24 M N I-88, DuPage, IL
Built 1959 Load: 27.9 t ADT: 22,700
IL 16 (FAP 91)
FairOver: BIG CREEK
5.0 MI W OF PARIS, Edgar, IL
Built 1963 Load: 27.9 t ADT: 2,650
IL 49(FAP 836)
FairOver: TRIB OF BRUSHY FORK
2.6 MI N OF US 36, Edgar, IL
Built 1983 Load: 27.9 t ADT: 1,000
TR 89
FairOver: STREAM
3 MI N OF BROCTON, Edgar, IL
Built 1970 Load: 27.9 t ADT: 50
TR 58 PELLA
FairOver: N FK VERMILION R
1500E,2700N, Ford, IL
Built 1963 Load: 27.9 t ADT: 50
FAS 419 - CH 7
FairOver: DRAINAGE DITCH
CTR-30-T9NR5W, Henderson, IL
Built 1960 Load: 27.9 t ADT: 1,100
TOWNSHIP RD NO 180
FairOver: BR OF CAMP CREEK
1 MI SE MASSBACH, Jo Daviess, IL
Built 1921 Load: 27.9 t ADT: 25
TOWNSHIP RD NO 197
FairOver: PLUM RIVER
4.5 MI SO STOCKTON, Jo Daviess, IL
Built 1925 Load: 27.9 t ADT: 50
CH 9
FairOver: SO BR ROCK CREEK
0.7 M E OF ILL 50, Kankakee, IL
Built 1936 Load: 27.9 t ADT: 2,050
CH-47/FAS 1303
FairOver: DRAINAGE DITCH
BONFIELD RD N OF 17, Kankakee, IL
Built 1927 Load: 27.9 t ADT: 450
TR-157
FairOver: BRUSH CREEK
N 39TH E 015, LaSalle, IL
Built 1971 Load: 27.9 t ADT: 75
FAS 174N/CH 41
FairOver: SUTPHENS RUN
E 1351,N 4500, LaSalle, IL
Built 1977 Load: 27.9 t ADT: 950
TR 441
FairOver: COVEL CREEK
N 22ND E 2290, LaSalle, IL
Built 1977 Load: 27.9 t ADT: 25
Showing 6,301-6,350 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.