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
FREMONT ROAD
Structurally DeficientOver: ELKHORN CREEK
4MI NE MILLEDGEVILLE, Carroll, IL
Built 1966 ADT: 50
TR 143
Structurally DeficientOver: LITTLE INDIAN CR.
2 MI SW PHILADELPHIA, Cass, IL
Built 1975 ADT: 25
TR 178
Structurally DeficientOver: BIG DITCH
0.3 MI NW PROSPECT, Champaign, IL
Built 1974 ADT: 350
TR 13
Structurally DeficientOver: MOSQUITO CREEK
3 MI E MT AUBURN, Christian, IL
Built 1960 ADT: 100
TR 121
Structurally DeficientOver: BIG GEORGE BRANCH
6 N OF ASSUMPTION, Christian, IL
Built 1900 ADT: 20
TR 196 A
Structurally DeficientOver: LOCUST CREEK
2 MI W OWANECO, Christian, IL
Built 1954 ADT: 175
TR 221
Structurally DeficientOver: CLEAR CREEK
5 MI N MORRISONVILLE, Christian, IL
Built 1900 ADT: 20
TR 310
Structurally DeficientOver: WILLOW BRANCH
1MI N MOWEAQUA, Christian, IL
Built 1900 ADT: 50
TR 53A
Structurally DeficientOver: FLAT CREEK
.5 MI W HUMBOLDT, Coles, IL
Built 1909 ADT: 25
TR 135 D
Structurally DeficientOver: EMBARRAS R
3.0 MI NE CHARLESTON, Coles, IL
Built 1883 ADT: 50
FAU-1292 (E Lake A
Structurally DeficientOver: N Br Chicago River
1.1 M E ILL 43 P14, Cook, IL
Built 1935 ADT: 22,900
MEADOWBROOK
Structurally DeficientOver: SALT CREEK
2 E 53/.5 S 62 P5C, Cook, IL
Built 1978 ADT: 1,150
TR-5
Structurally DeficientOver: CREEK
3.5 MI SE FLAT ROCK, Crawford, IL
Built 1909 ADT: 50
TR-22
Structurally DeficientOver: WILLOW CREEK
3 MI N OBLONG, Crawford, IL
Built 1963 ADT: 50
CH 5(FAS 703)
Structurally DeficientOver: MUDDY CREEK
1.3 MI S JEWETT, Cumberland, IL
Built 1963 ADT: 300
TR 151
Structurally DeficientOver: COON CREEK
1.5 MI E CLINTON, De Witt, IL
Built 1966 ADT: 350
ANDERLAND ROAD
Structurally DeficientOver: N BR KISHWAUKEE RV
1675N 600E, DeKalb, IL
Built 1960 ADT: 100
WASHINGTON ST
Structurally DeficientOver: WEST BRANCH
WASH. ST. 1M S US 34, DuPage, IL
Built 1976 ADT: 13,700
ARLINGTON Drive
Structurally DeficientOver: W BRANCH DUPAGE RIV
0.5M S US-20, DuPage, IL
Built 1971 ADT: 2,350
TR-173A
Structurally DeficientOver: HURRICANE CREEK
0.5 MI SE BINGHAM, Fayette, IL
Built 1909 ADT: 50
FAS 452-CH 2
Structurally DeficientOver: COAL CREEK
W1/2-27-T8NR2E, Fulton, IL
Built 1953 ADT: 325
TR-91B VALERIO RD
Structurally DeficientOver: CLAYPOOL DR DITCH
.05 MI W WILL RD, Grundy, IL
Built 1916 ADT: 100
MIDDLE RD
Structurally DeficientOver: DRAINAGE DITCH
WARSAW, Hancock, IL
Built 1904 ADT: 150
4TH ST/MS 1020
Structurally DeficientOver: SPILLING CREEK
PONTOOSUC, Hancock, IL
Built 1900 ADT: 150
TR 1A - HANCOCK CO
Structurally DeficientOver: CAMP CREEK
5 MI E DALLAS CITY, Henderson, IL
Built 1917 ADT: 75
TR 293
Structurally DeficientOver: LITTLE MUD CREEK
3MI N 2.75 W CISSNA, Iroquois, IL
Built 1971 ADT: 25
TR 126
Structurally DeficientOver: MUD CR
0.5 W CISSNA P, Iroquois, IL
Built 1954 ADT: 50
TR 108
Structurally DeficientOver: LANGAN CREEK
1.5N O.SW OF CLIFTON, Iroquois, IL
Built 1983 ADT: 50
TR 420A
Structurally DeficientOver: TRIB TO IROQUOIS RV
N. EDGE OF IROQUOIS, Iroquois, IL
Built 1930 ADT: 25
TR 104
Structurally DeficientOver: TRIB TO SPRING CR
2 MI N US 45&24-2 MI, Iroquois, IL
Built 1956 ADT: 25
TR 192
Structurally DeficientOver: WHISKEY CR
1 MI NE CLAYTONVILLE, Iroquois, IL
Built 1896 ADT: 25
TR 320
Structurally DeficientOver: MARTINTON DITCH #3
2.5MI E MARTINTON, Iroquois, IL
Built 1955 ADT: 25
TR 242
Structurally DeficientOver: MUD CR
5 MI SW MILFORD, Iroquois, IL
Built 1917 ADT: 25
TR 2 D
Structurally DeficientOver: TRIB TO SUGAR CR
.5 MI N CH 9, Iroquois, IL
Built 1965 ADT: 50
CH 6
Structurally DeficientOver: WILEY CR
6.3 MI NW KANKAKEE, Kankakee, IL
Built 1964 ADT: 750
TR 57
Structurally DeficientOver: TRIB TO WALNUT CREEK
NW-34-T13NR4E, Knox, IL
Built 1900 ADT: 25
DILLEYS ROAD
Structurally DeficientOver: MILL CREEK
.13 E OF TOLL RD, Lake, IL
Built 2002 ADT: 5,600
MS-4061 (BEECH ST)
Structurally DeficientOver: RAVINE
1.5 M N LAKE COOK RD, Lake, IL
Built 1957 ADT: 300
GREENWOOD AVE
Structurally DeficientOver: UPRR
0.5 M E SHERIDAN RD, Lake, IL
Built 1972 ADT: 250
MS-7711 (GLENN ST)
Structurally DeficientOver: LONG CREEK
GLENN OV LONG CR, LaSalle, IL
Built 1964 ADT: 525
TR-58
Structurally DeficientOver: THE SLOUGH
4 MI ESE CHAUNCEY, Lawrence, IL
Built 1909 ADT: 25
TR 1(LAKE FORK RD)
Structurally DeficientOver: DITCH
DEWITT CO LINE, Macon, IL
Built 1963 ADT: 20
TR 1A(LAKE FORK RD
Structurally DeficientOver: FRIENDS CREEK
5.3 MI N OF ARGENTA, Macon, IL
Built 1978 ADT: 25
CH 36
Structurally DeficientOver: E.FK. OTTER CK.
3.0 MI NW NILWOOD, Macoupin, IL
Built 1959 ADT: 450
CH 11
Structurally DeficientOver: MASSA CRK.
.5 E 2.5 S PALMYRA, Macoupin, IL
Built 1940 ADT: 150
TR 13
Structurally DeficientOver: SUGAR CREEK
5 MI W VIRDEN, Macoupin, IL
Built 1900 ADT: 20
TR-55
Structurally DeficientOver: Solomon Creek
NW Edge Palmyra, Macoupin, IL
Built 1962 ADT: 20
TR 205
Structurally DeficientOver: CREEK
1 N 3E CARLINVILLE, Macoupin, IL
Built 1965 ADT: 150
TR 510/BIERMAN ROA
Structurally DeficientOver: SHAW PT BR
7 E. 1.S. CARLINVILL, Macoupin, IL
Built 1900 ADT: 20
SILVER CRK RD/TR 1
Structurally DeficientOver: SILVER CK
2.0MI SE LIVINGSTON, Madison, IL
Built 1901 ADT: 125
Showing 27,051-27,100 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 |