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
FAS 901(CH 9)
FairOver: BANKSTON CREEK
0.6 MI S ILL 13, Saline, IL
Built 1955 Load: 32.1 t ADT: 1,900
FAS 634 CH 01
FairOver: WOLF CREEK
2.0 NE OF SPAULDING, Sangamon, IL
Built 1984 Load: 32.1 t ADT: 650
IL 4
FairOver: TRIB TO MUD CREEK
3.5 M N JCT 13, St. Clair, IL
Built 1928 Load: 32.1 t ADT: 2,050
EB CD TO IL 3 SB "
FairOver: UPRR
PIER D11-> PIER O-17, St. Clair, IL
Built 1972 Load: 32.1 t ADT: 5,500
FAI 255-RAMP 9
FairOver: CANTEEN CREEK
I-255 SO OF CO LINE, St. Clair, IL
Built 1984 Load: 32.1 t ADT: 2,050
DUBLIN RD.
FairOver: YELLOW CREEK
2.5 MI NW PEARL CITY, Stephenson, IL
Built 1966 Load: 32.1 t ADT: 575
SABIN CHURCH ROAD
FairOver: LOST CREEK
2.8 MI. EAST ILL. 73, Stephenson, IL
Built 1968 Load: 32.1 t ADT: 300
VETERANS DRIVE
FairOver: KERFOOT CR
S1/2-34-T26NR4W, Tazewell, IL
Built 1981 Load: 32.1 t ADT: 4,650
TR 287
FairOver: BIG CREEK
.8M.E.DONGOLA CL., Union, IL
Built 1971 Load: 32.1 t ADT: 50
TR 74
FairOver: KNIGHTS BRANCH
3.5 MI SW POTOMAC, Vermilion, IL
Built 1978 Load: 32.1 t ADT: 50
FAP-823 (ILL-15)
FairOver: STREAM
4 MI W EDWARDS CO LN, Wayne, IL
Built 1955 Load: 32.1 t ADT: 2,750
FAS-885
FairOver: LITTLE WABASH RIVER
4 MI W CROSSVILLE, White, IL
Built 1978 Load: 32.1 t ADT: 225
ERIE ROAD
FairOver: ROCK RIVER
1 MILE SOUTH OF ERIE, Whiteside, IL
Built 1955 Load: 32.1 t ADT: 1,200
ILL 13 EB
FairOver: CRABORCHARD CREEK
1 MI E OF MARION, Williamson, IL
Built 1962 Load: 32.1 t ADT: 13,800
ILL 13 WB
FairOver: CRABORCHARD CREEK
1 MI E OF MARION, Williamson, IL
Built 1962 Load: 32.1 t ADT: 13,800
ROSCOE RD
FairOver: UNNAMED CREEK
AT CM&STP RR, Winnebago, IL
Built 1962 Load: 32.1 t ADT: 8,300
FAI 172 NB
FairOver: BURTON CREEK
1.4MI S I172/IL96, Adams, IL
Built 1980 Load: 32.4 t ADT: 4,875
TR 343
FairOver: CREEK
4.2 MI SE COLUMBUS, Adams, IL
Built 1905 Load: 32.4 t ADT: 50
TR 202
FairOver: S FORK MILL CREEK
2MI S W BURTON, Adams, IL
Built 1975 Load: 32.4 t ADT: 150
TR 39
FairOver: THURMAN CREEK
5.0 MI E LORAINE, Adams, IL
Built 1900 Load: 32.4 t ADT: 50
TR 0260
FairOver: CREEK
2.8 MI E MENDON, Adams, IL
Built 1977 Load: 32.4 t ADT: 125
TR 607
FairOver: BEEBE CREEK
6.5 MI E PLAINVILLE, Adams, IL
Built 1979 Load: 32.4 t ADT: 50
TR 0202
FairOver: SOUTH BR. MILL CREEK
1.75 MILES S BURTON, Adams, IL
Built 1978 Load: 32.4 t ADT: 150
TR 531
FairOver: PIGEON CREEK
1.8 MI NE PAYSON, Adams, IL
Built 1980 Load: 32.4 t ADT: 75
TR 0518
FairOver: FISHHOOK CREEK
2.5 MI S SILOAM SPRI, Adams, IL
Built 1978 Load: 32.4 t ADT: 75
TR 233
FairOver: CURL CREEK
1.6 MI SE CAMP POINT, Adams, IL
Built 1979 Load: 32.4 t ADT: 50
TR 385
FairOver: BURTON CREEK
1.5 MI N BURTON, Adams, IL
Built 1979 Load: 32.4 t ADT: 300
TR 466
FairOver: MISSOURI CREEK
1.8 MI NW CLAYTON, Adams, IL
Built 1980 Load: 32.4 t ADT: 125
TR 107
FairOver: JENKINS CREEK
2.4 MI N URSA, Adams, IL
Built 1982 Load: 32.4 t ADT: 100
TR 297
FairOver: WALNUT FORK
3 MI SE CLAYTON, Adams, IL
Built 1981 Load: 32.4 t ADT: 75
TR 255
FairOver: DRAINAGE CANAL
3.1 MI NNW QUINCY, Adams, IL
Built 1980 Load: 32.4 t ADT: 100
TR 229
FairOver: BRANCH OF ROCK CREEK
3.5 MI S MENDON, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
TR 182
FairOver: MILL CREEK
6 MI NE QUINCY, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
TR 416
FairOver: BR OF MCKEE CREEK
4 MI NE LIBERTY, Adams, IL
Built 1981 Load: 32.4 t ADT: 25
TR 39
FairOver: CROOKED CREEK
4.5 MI W GOLDEN, Adams, IL
Built 1981 Load: 32.4 t ADT: 50
TR 423
FairOver: MILL CREEK
2.25 MI S E QUINCY, Adams, IL
Built 1981 Load: 32.4 t ADT: 175
TR 114A
FairOver: MILL CREEK
3.0 MI S E QUINCY, Adams, IL
Built 1982 Load: 32.4 t ADT: 200
TR 0563
FairOver: FALL CREEK
1.4 MI W PAYSON, Adams, IL
Built 1984 Load: 32.4 t ADT: 50
TR 350
FairOver: BR OF MCCRAMEY CREEK
3.5 MI E PLAINVILLE, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
TR 380
FairOver: MCKEE CREEK
2.2 MI E COLUMBUS, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
TR 210
FairOver: S.FK MILL CREEK
1.4 MI S BURTON, Adams, IL
Built 1982 Load: 32.4 t ADT: 100
TR 152
FairOver: LITTLE MILL CREEK
2.75 MI E QUINCY, Adams, IL
Built 1982 Load: 32.4 t ADT: 250
TR 165
FairOver: S FK BEAR CREEK
2.1 MI N COATSBURG, Adams, IL
Built 1982 Load: 32.4 t ADT: 100
TR 21
FairOver: OAK CREEK
1.0 MI. E. OF LIMA, Adams, IL
Built 1983 Load: 32.4 t ADT: 50
TR 437
FairOver: MILL CREEK
3.1 MI SE QUINCY, Adams, IL
Built 1984 Load: 32.4 t ADT: 100
TR 297
FairOver: WALNUT FORK CREEK
2.3 MI S CLAYTON, Adams, IL
Built 1984 Load: 32.4 t ADT: 100
TR 297
FairOver: WALNUT FORK CREEK
2.3 MI S CLAYTON, Adams, IL
Built 1984 Load: 32.4 t ADT: 100
TR 301
FairOver: FRAZIER CREEK
1.5 MI N QUINCY, Adams, IL
Built 1984 Load: 32.4 t ADT: 300
TR 411
FairOver: WILLOW BR CREEK
3.0 MI NE LIBERTY, Adams, IL
Built 1986 Load: 32.4 t ADT: 75
CH 5
FairOver: MILL CREEK
4 MI EAST OF QCY, Adams, IL
Built 1905 Load: 32.4 t ADT: 950
Showing 7,101-7,150 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.