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
CH 7
FairOver: HOMAN CREEK
2.3 MILES N QUINCY, Adams, IL
Built 1965 Load: 24.3 t ADT: 625
CH 10
FairOver: MCCRANEY CREEK
2 MI E PLAINVILLE, Adams, IL
Built 1938 Load: 24.3 t ADT: 225
TR 124
FairOver: GRINDSTONE CRK.
4.5 MI W LORAINE, Adams, IL
Built 1918 Load: 24.3 t ADT: 50
TR 203
FairOver: CREEK
3.7 MI SW URSA, Adams, IL
Built 1905 Load: 24.3 t ADT: 75
TR 378
FairOver: CREEK
4.0 MI W LAPRAIRIE, Adams, IL
Built 1935 Load: 24.3 t ADT: 50
TR 398
FairOver: Beebe Creek
2.2 M SW KINGSTON, Adams, IL
Built 1905 Load: 24.3 t ADT: 25
TR 474
FairOver: CREEK
1.7 MI N LAPRAIRIE, Adams, IL
Built 1905 Load: 24.3 t ADT: 50
TR 89A
FairOver: BEAR CRK
2.5 MI S OF LORAINE, Adams, IL
Built 1969 Load: 24.3 t ADT: 125
TR 387
FairOver: LIERLE CREEK
2.7 MI N LIBERTY, Adams, IL
Built 1971 Load: 24.3 t ADT: 50
TR 0180A
FairOver: MILL CREEKBRANCH
3.25 MI N PAYSON, Adams, IL
Built 1970 Load: 24.3 t ADT: 75
TR 312
FairOver: BRANCH OF MCKEE CRK
1.0 MI S COATSBURG, Adams, IL
Built 1908 Load: 24.3 t ADT: 50
TR 0410
FairOver: CREEK
2.7 MI NE LIBERTY, Adams, IL
Built 1977 Load: 24.3 t ADT: 50
TR 0457
FairOver: BRANCH OF MCKEE CRK
3.2 MI E LIBERTY, Adams, IL
Built 1900 Load: 24.3 t ADT: 100
ILL 3
FairOver: PIGEON ROOST CREEK
OLIVE BRANCH, Alexander, IL
Built 1965 Load: 24.3 t ADT: 3,300
TR 5
FairOver: E BRANCH OF BEAVER C
5.75M W KEYSPORT, Bond, IL
Built 1959 Load: 24.3 t ADT: 375
TR 111
FairOver: TRIB INDIAN CREEK
3.0M NW GREENVILLE, Bond, IL
Built 1901 Load: 24.3 t ADT: 50
TR 101A
FairOver: INDIAN CREEK
3.0M NW GREENVILLE, Bond, IL
Built 1982 Load: 24.3 t ADT: 100
TR 20
FairOver: BR LITTLE DRY FK
1.5 MI NW OLD RIPLEY, Bond, IL
Built 1979 Load: 24.3 t ADT: 25
TR 0053
FairOver: ABANDONED RR ROW
1.75 MI W SORENTO, Bond, IL
Built 1940 Load: 24.3 t ADT: 125
DAWSON LAKE RD
FairOver: BRANCH OF BEAVER CR
5.0 MI N BELVIDERE, Boone, IL
Built 1958 Load: 24.3 t ADT: 1,750
BERGEN RD
FairOver: N KINNIKINNICK CREEK
7.5 MI NW POPLAR GRV, Boone, IL
Built 1989 Load: 24.3 t ADT: 10
N BOONE SCHOOL RD
FairOver: S. KINNIKINNICK CRK.
3.0 MI N CALEDONIA, Boone, IL
Built 1965 Load: 24.3 t ADT: 100
TOWNSHIP RD 97A
FairOver: W. BUREAU CR.
3 MI. W. OF KASBEER, Bureau, IL
Built 1920 Load: 24.3 t ADT: 125
TOWNSHIP RD 4
FairOver: SPRING CREEK
3 MI NE OF LADD, Bureau, IL
Built 1934 Load: 24.3 t ADT: 275
TR 183
FairOver: BRANCH W. BUREAU CRE
4 MI. N. OF WYANET, Bureau, IL
Built 1967 Load: 24.3 t ADT: 175
TR-246
FairOver: LIME CREEK
5 MI. N. PRINCETON, Bureau, IL
Built 1915 Load: 24.3 t ADT: 75
TR-59
FairOver: FAIRFIELD DITCH
2.5 MI. S. YORKTOWN, Bureau, IL
Built 1910 Load: 24.3 t ADT: 75
TR 345
FairOver: SILVER CREEK
1.5 MI SW PROVIDENCE, Bureau, IL
Built 1928 Load: 24.3 t ADT: 50
TR 174
FairOver: WALNUT DITCH
1 MI SE OF WALNUT, Bureau, IL
Built 1969 Load: 24.3 t ADT: 50
TR 271 (1400N)
FairOver: BRANCH OF POND CREEK
1.5 MI. SW OF WYANET, Bureau, IL
Built 1920 Load: 24.3 t ADT: 100
C H 31
FairOver: BRANCH OF CROW CREEK
6.0 MI E BRADFORD, Bureau, IL
Built 1958 Load: 24.3 t ADT: 425
TR 192
FairOver: WALNUT CREEK
2 MI E OF WALNUT, Bureau, IL
Built 1966 Load: 24.3 t ADT: 35
TR 210
FairOver: WALNUT CREEK
3 MI E OF WALNUT, Bureau, IL
Built 1954 Load: 24.3 t ADT: 150
COUNTY HIGHWAY 16
FairOver: BR OF W FORK SPOON R
3 MI SW NEPONSET, Bureau, IL
Built 1936 Load: 24.3 t ADT: 425
TR 14
FairOver: MUD CREEK
2 MI W OF NEPONSET, Bureau, IL
Built 1935 Load: 24.3 t ADT: 50
FAS 755
FairOver: STREAM
0.13 S OF ILL 96, Calhoun, IL
Built 1941 Load: 24.3 t ADT: 225
FAS 755
FairOver: GRESHAM CR
0.6 MI S OF HAMBURG, Calhoun, IL
Built 1967 Load: 24.3 t ADT: 225
FAS 754
FairOver: PLUESTER CREEK
1 MILE N OF MEPPEN, Calhoun, IL
Built 1935 Load: 24.3 t ADT: 1,100
FAS 754
FairOver: METZ CREEK
0.4 MI N OF BRUSSELS, Calhoun, IL
Built 1937 Load: 24.3 t ADT: 1,100
FAS 754
FairOver: STREAM
4.8 M S HARDIN, Calhoun, IL
Built 1937 Load: 24.3 t ADT: 1,050
FAS 754
FairOver: STREAM
NEAR MEPPEN, Calhoun, IL
Built 1937 Load: 24.3 t ADT: 1,000
FAS 754
FairOver: STREAM
MEPPEN 3M N BRUSSELS, Calhoun, IL
Built 1937 Load: 24.3 t ADT: 1,000
FAS 754
FairOver: STREAM
1.75 MI N OF BRUSSEL, Calhoun, IL
Built 1931 Load: 24.3 t ADT: 1,000
W CAMP CREEK ROAD
FairOver: CAMP CREEK
3MI NE PALISADES PAR, Carroll, IL
Built 1952 Load: 24.3 t ADT: 25
W DAVIS ROAD
FairOver: BRANCH OF PLUM R
5 MI NW MT.CARROLL, Carroll, IL
Built 1927 Load: 24.3 t ADT: 50
W CORBETT ROAD
FairOver: BRANCH OF CARROLL CK
1 M NW MT CARROLL, Carroll, IL
Built 1927 Load: 24.3 t ADT: 150
GRANGE ROAD
FairOver: BRANCH OF MIDDLE CR
2 MI NW BROOKVILLE, Carroll, IL
Built 1975 Load: 24.3 t ADT: 75
W YORK CENTER ROAD
FairOver: BR OF JOHNSON CREEK
4 MI NE OF THOMSON, Carroll, IL
Built 1985 Load: 24.3 t ADT: 25
GOOSE ROAD
FairOver: GOOSE CREEK
4 MI SE MILLEDGEVIL., Carroll, IL
Built 1932 Load: 24.3 t ADT: 75
FAS577
FairOver: SCHAAD DITCH
5 MI NNW VIRGINIA, Cass, IL
Built 1948 Load: 24.3 t ADT: 600
Showing 5,151-5,200 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |