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 12
FairOver: STREAM
3.4 MI SE CERO GORDO, Piatt, IL
Built 1939 Load: 19.4 t ADT: 175
TR 66
FairOver: HADLEY CR TRIBUTARY
1.0 MI E KINDERHOOK, Pike, IL
Built 1916 Load: 19.4 t ADT: 25
TR 92
FairOver: HADLEY CR TRIBUTARY
1.0 MI NW BARRY, Pike, IL
Built 1920 Load: 19.4 t ADT: 50
DIVISION ST/GRANVI
FairOver: ALL FORKS CREEK
116 FT S HENNEPIN ST, Putnam, IL
Built 1900 Load: 19.4 t ADT: 350
FAS 898
FairOver: TRIB MID FK SALINE R
1.80 MI S OF IL 34, Saline, IL
Built 1938 Load: 19.4 t ADT: 1,250
TR 384
FairOver: LITTLE WOLF CREEK
4.5 S WILLIAMSVILLE, Sangamon, IL
Built 1962 Load: 19.4 t ADT: 75
COLLINSVILLE RD
FairOver: SCHOENBERGER CK
0.5 M E JCT ILL 203, St. Clair, IL
Built 1947 Load: 19.4 t ADT: 3,150
40TH ST - E ST LOU
FairOver: SCHOENBER GER CREEK
0.03 N OF PARK DR, St. Clair, IL
Built 1935 Load: 19.4 t ADT: 10
CH 3 (FAS 373)
FairOver: MUD CREEK
CTR-25-T12NR6E, Stark, IL
Built 1940 Load: 19.4 t ADT: 75
W SHIPPEE ROAD
FairOver: BR OF WADDAMS CREEK
2.5 MI N OF LENA, Stephenson, IL
Built 1920 Load: 19.4 t ADT: 75
W FLORENCE RD
FairOver: BR OF YELLOW CREEK
1.8 MI. W.IL. RT. 26, Stephenson, IL
Built 1940 Load: 19.4 t ADT: 175
MAIN STREET
FairOver: LITTLE LICK CREEK
N.PEKIN-.5M S ILL 29, Tazewell, IL
Built 1930 Load: 19.4 t ADT: 5,450
TR 88B
FairOver: GREEN CREEK TRIB
SE COR SEC14 T12SR2W, Union, IL
Built 1988 Load: 19.4 t ADT: 10
TR 123
FairOver: NASHVILLE CREEK
2 MI N-1.25 MI W NAS, Washington, IL
Built 1920 Load: 19.4 t ADT: 600
TR-354
FairOver: CROOKED CREEK
2 MI S CROSSVILLE, White, IL
Built 1963 Load: 19.4 t ADT: 50
ALBANY ROAD
FairOver: BR. MEREDOSIA DITCH
5 MI NW OF ERIE, Whiteside, IL
Built 1961 Load: 19.4 t ADT: 800
HOOVER ROAD
FairOver: BR OF ELKHORN CR
3.5 MI N. STERLING, Whiteside, IL
Built 1962 Load: 19.4 t ADT: 275
TR-95 (HAZEL RD)
FairOver: FRENCH CREEK
1.5 MI E. MORRISON, Whiteside, IL
Built 1961 Load: 19.4 t ADT: 675
PECATONICA RD
FairOver: GROVE CREEK
0.5 MI S US 20, Winnebago, IL
Built 1927 Load: 19.4 t ADT: 1,300
SAFFORD ROAD
FairOver: KENT CREEK
0.5 MI E SPRINGFIELD, Winnebago, IL
Built 1957 Load: 19.4 t ADT: 675
TR-44
FairOver: TRIB MILLER CREEK
2.5 MI E OF THEBES, Alexander, IL
Built 1957 Load: 19.8 t ADT: 75
TR 94
FairOver: DORRIS CREEK
4M SE PANAMA, Bond, IL
Built 1955 Load: 19.8 t ADT: 10
TR 106
FairOver: CREEK
2 MI NNW VIRGINIA, Cass, IL
Built 1957 Load: 19.8 t ADT: 200
CH 20 (FAS 533)
FairOver: STREAM
7.5 MI E MAHOMET, Champaign, IL
Built 1940 Load: 19.8 t ADT: 1,000
CH 18
FairOver: CLEAR CREEK
6MI NW PALMER, Christian, IL
Built 1954 Load: 19.8 t ADT: 175
TR 273
FairOver: S. FORK LAKE FORK
3.5MI N PANA, Christian, IL
Built 1950 Load: 19.8 t ADT: 20
TR-100
FairOver: RACCOON CREEK
3.5 MI NE XENIA, Clay, IL
Built 1950 Load: 19.8 t ADT: 50
IL 43 SB (HARLEM)
FairOver: RR - CN
0.1 M S I-55, Cook, IL
Built 1966 Load: 19.8 t ADT: 39,000
SBI-1 (BROWNS RD)
FairOver: STREAM
BROWNS, Edwards, IL
Built 1922 Load: 19.8 t ADT: 550
FAS-1714
FairOver: CAMP CREEK
1.5 MI N BROWNSTOWN, Fayette, IL
Built 1935 Load: 19.8 t ADT: 700
FAU-8422
FairOver: PENN CENTRAL RR
VANDALIA, Fayette, IL
Built 1909 Load: 19.8 t ADT: 2,000
FAS 460-CH 14
FairOver: MUDD CREEK
NE-15-T5NR2E, Fulton, IL
Built 1952 Load: 19.8 t ADT: 150
FAS 1452
FairOver: S F SHAW CR
SW-10-T6NR1E, Fulton, IL
Built 1957 Load: 19.8 t ADT: 25
SEVEN HILLS RD-TR
FairOver: STREAM
NW-28-T8NR1E, Fulton, IL
Built 1961 Load: 19.8 t ADT: 75
FAS 1803 CH 17
FairOver: BEAVER POND DRAIN DT
3 MI E PINKSTAFF, Lawrence, IL
Built 1923 Load: 19.8 t ADT: 250
TR 84
FairOver: TRIB VERMILLION R
2870 N, 1100 E, Livingston, IL
Built 1921 Load: 19.8 t ADT: 100
TR 218
FairOver: LAKE FORK CK
2 E 2.5 MI S LAKE FK, Logan, IL
Built 1968 Load: 19.8 t ADT: 25
TR 90
FairOver: COOP CREEK
3 MI N SHIPMAN, Macoupin, IL
Built 1951 Load: 19.8 t ADT: 150
THORNE RD
FairOver: KISWAUKEE RIVER
1.0 MI N. OF US-20, McHenry, IL
Built 1959 Load: 19.8 t ADT: 275
TR 316
FairOver: MAUVAISE TERRE CREEK
2 MI NE PISGAH, Morgan, IL
Built 1959 Load: 19.8 t ADT: 50
FAS 604
FairOver: BAY CREEK TRIB
.5 M N CH 10, Pike, IL
Built 1971 Load: 19.8 t ADT: 700
TR 346
FairOver: SAND CREEK
3.2 MI NW WINDSOR, Shelby, IL
Built 1968 Load: 19.8 t ADT: 50
SCHALLER RD/ CH 67
FairOver: CREEK
1.0MI SW LENZBURG, St. Clair, IL
Built 1943 Load: 19.8 t ADT: 175
WEST BLAIR
FairOver: SPAFFORD CREEK
6.0 MI. W WINSLOW, Stephenson, IL
Built 1953 Load: 19.8 t ADT: 50
CH 18
FairOver: BR GRAND POINT CREEK
1 MI SOUTH NOLTINGS, Washington, IL
Built 1937 Load: 19.8 t ADT: 500
TR 35
FairOver: GRAND POINT CR
3 MI NE HOYLETON, Washington, IL
Built 1926 Load: 19.8 t ADT: 25
KRUGER ROAD
FairOver: SPRING BROOK
5 MI E FULTON, Whiteside, IL
Built 1963 Load: 19.8 t ADT: 50
CS 7000 OFF FAS 90
FairOver: DRAINAGE DITCH
0.7 M W JOHNSTON CIT, Williamson, IL
Built 1956 Load: 19.8 t ADT: 800
ROCKTON AVE
FairOver: BR MUD CREEK
1 MI S LATHAM RD, Winnebago, IL
Built 1956 Load: 19.8 t ADT: 675
NO. DEVILS KITCHEN
FairOver: GRASSY CREEK
SEC 16 T10S R1E, Williamson, IL
Built 1959 Load: 20.0 t ADT: 200
Showing 4,551-4,600 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 |