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
CLARK RD
FairOver: LITTLE ROCK CREEK
8.0 MI N MORRISON, Whiteside, IL
Built 1958 Load: 37.3 t ADT: 50
NEW ILL RTE 13
FairOver: L CRAB ORCHARD CR
CRAB ORCHARD, Williamson, IL
Built 1990 Load: 37.3 t ADT: 12,100
US 20 EB
FairOver: KISHWAUKEE RIVER
.12 MI E OLD MILL RD, Winnebago, IL
Built 1963 Load: 37.3 t ADT: 14,900
US 20 WB
FairOver: KISHWAUKEE RIVER
.12 MI E OLD MILL RD, Winnebago, IL
Built 1963 Load: 37.3 t ADT: 14,900
ILL 26
FairOver: FUNKS RUN
19.56 MI S OF ILL 17, Woodford, IL
Built 1955 Load: 37.3 t ADT: 6,750
TR 0116
FairOver: MILL CREEK
3.0 MI SE QUINCY, Adams, IL
Built 1900 Load: 37.6 t ADT: 400
TR 105
FairOver: CREEK
1 MI N MENDON, Adams, IL
Built 1994 Load: 37.6 t ADT: 150
TR 304
FairOver: BRUSHY CREEK
2MI N COATSBURG, Adams, IL
Built 1994 Load: 37.6 t ADT: 75
SQUAW PRAIRIE RD
FairOver: PISCASAW CREEK
2.0 MI NE BELVIDERE, Boone, IL
Built 1978 Load: 37.6 t ADT: 1,350
IL 92 FAP 587
FairOver: UNNAMED STREAM
1 MI. E. OF WALNUT, Bureau, IL
Built 1994 Load: 37.6 t ADT: 1,300
CRIM DR (ARMY DEPO
FairOver: APPLE RIVER
1.2 MI. W. OF IL 84, Carroll, IL
Built 1940 Load: 37.6 t ADT: 350
TR 187
FairOver: S FORK SANGAMON R
3.25 N W TAYLORVILLE, Christian, IL
Built 1994 Load: 37.6 t ADT: 75
FERRIN ROAD/TR 192
FairOver: LOST CREEK
1MI S. FERRIN, Clinton, IL
Built 1968 Load: 37.6 t ADT: 175
I- 55 EB STEVENSON
FairOver: RR - BNSF
0.3 M E US 45, Cook, IL
Built 1964 Load: 37.6 t ADT: 61,500
I-90 SKYWAY EB
FairOver: SERVICE BUILDING
E YATES & ANTHNY P8C, Cook, IL
Built 1958 Load: 37.6 t ADT: 14,350
I90 WB (NW TOLL)
FairOver: C.W.RR
E OF US 12&45 P11, Cook, IL
Built 1958 Load: 37.6 t ADT: 86,100
CH 10
FairOver: DRY FORK
4.65 MI N OF GARRETT, Douglas, IL
Built 1934 Load: 37.6 t ADT: 1,550
US 36(FAP 323)
FairOver: BROUILLETTS CR
2.5 MI W OF IL 1, Edgar, IL
Built 1928 Load: 37.6 t ADT: 1,550
ILL 53 FAP 846
FairOver: MAZON RIVER
1.3 M N OF GARDNER, Grundy, IL
Built 1969 Load: 37.6 t ADT: 1,400
TR 301
FairOver: TRIB LITTLE BEAR CR
3 MI SE WARSAW, Hancock, IL
Built 1963 Load: 37.6 t ADT: 50
CH 9 (RARITAN ROAD
FairOver: HONEY CR
W EDGE OF RARITAN, Henderson, IL
Built 1956 Load: 37.6 t ADT: 725
TR 302
FairOver: BEAVER CREEK
1.25E 1.25N PAPINEAU, Iroquois, IL
Built 1984 Load: 37.6 t ADT: 150
TR 317
FairOver: STREAM
1.6E,1.6S OF MILFORD, Iroquois, IL
Built 1983 Load: 37.6 t ADT: 50
ILL 13 EB
FairOver: PILES FORK CREEK
NEAR ECL CARBONDALE, Jackson, IL
Built 1970 Load: 37.6 t ADT: 19,000
FAS 1923
FairOver: TRIB TO CAVE CREEK
JERUSALEM HILL RD, Jackson, IL
Built 2000 Load: 37.6 t ADT: 150
FAI-57 SB
FairOver: ROCK CR
4.6 MI N OF ILL 50, Kankakee, IL
Built 1963 Load: 37.6 t ADT: 13,700
FAI-57 NB
FairOver: ROCK CR
4.6 MI N OF ILL 50, Kankakee, IL
Built 1964 Load: 37.6 t ADT: 13,700
US 34
FairOver: WAUBANSEE CREEK
E.LIMITS OF OSWEGO, Kendall, IL
Built 2001 Load: 37.6 t ADT: 22,300
INTERSTATE 94 NB
FairOver: E J & E RR
I94 .5M S ILL 176, Lake, IL
Built 1958 Load: 37.6 t ADT: 72,350
E. 19TH RD,FAU 616
FairOver: PRAIRIE CREEK
E 19TH N 1410, LaSalle, IL
Built 1935 Load: 37.6 t ADT: 450
TR-117
FairOver: OTTER POND DITCH
1 MI NW LAWVILLE APT, Lawrence, IL
Built 1994 Load: 37.6 t ADT: 50
IL 17
FairOver: DRAINAGE DITCH
2.8 M E OF IL 17-23, Livingston, IL
Built 1993 Load: 37.6 t ADT: 525
IL 10
FairOver: KICKAPOO CR OVERFLOW
0.5 MI W I-55, Logan, IL
Built 1999 Load: 37.6 t ADT: 3,100
TR 62(BANTAM RD)
FairOver: LAKE FORK CREEK
4.5 MI W MAROA, Macon, IL
Built 1976 Load: 37.6 t ADT: 50
TR 514 / DICKEY RO
FairOver: SHAW PT BR
8 E 2 S CARLINVILL, Macoupin, IL
Built 1960 Load: 37.6 t ADT: 50
FAS 1937/TROY OFAL
FairOver: CONRAIL RR
1.5 MI S TROY, Madison, IL
Built 1987 Load: 37.6 t ADT: 8,150
OLD US 136
FairOver: COUNTY DITCH
S US136, 1.2M E IL10, Mason, IL
Built 1928 Load: 37.6 t ADT: 25
TR 122
FairOver: SEVENMILE CREEK
0.9 MI N OF TR 115, Massac, IL
Built 1986 Load: 37.6 t ADT: 225
IL 176
FairOver: FOX RIVER
1.8 M W OF CNTY LINE, McHenry, IL
Built 1954 Load: 37.6 t ADT: 18,100
FAU-6365 (LincolnS
FairOver: Broadmoor Creek
1.2 MI NE 55 & 150, McLean, IL
Built 1968 Load: 37.6 t ADT: 3,600
FAS 1210-CH 10
FairOver: EDWARDS RIVER
NE-9-T14NR5W, Mercer, IL
Built 1980 Load: 37.6 t ADT: 100
FAI 255 EB
FairOver: MISSISSIPPI RIVER
3.0MI W OF COLUMBIA, Monroe, IL
Built 1986 Load: 37.6 t ADT: 25,850
FAI 255WB
FairOver: MISSISSIPPI RIVER
N.W.OF COLUMBIA, Monroe, IL
Built 1984 Load: 37.6 t ADT: 25,850
FAI 72 WB
FairOver: SPRING CREEK
.25MW SANG CO LINE, Morgan, IL
Built 1976 Load: 37.6 t ADT: 7,250
FAI 72 EB
FairOver: SPRING CREEK
.25MW SANG CO LINE, Morgan, IL
Built 1976 Load: 37.6 t ADT: 7,250
FAS 659(CADWELL RD
FairOver: JONATHAN CREEK
1.5 MI S OF ILL 133, Moultrie, IL
Built 1959 Load: 37.6 t ADT: 1,750
WELD PARK RD
FairOver: STILLMAN CREEK
2.0 S.W. STILLMAN VA, Ogle, IL
Built 1961 Load: 37.6 t ADT: 50
ILL 91
FairOver: FARGO RUN TRIBUTARY
1.5 MI N OF US 150, Peoria, IL
Built 1995 Load: 37.6 t ADT: 5,350
GRANGE HALL RD
FairOver: E.BR.KICKAPOO CREEK
SE1/4-25-JUBILEE, Peoria, IL
Built 1984 Load: 37.6 t ADT: 725
FAS 940 PERKS ROAD
FairOver: LITTLE CREEK
1.0 MI SE OF WETAUG, Pulaski, IL
Built 1982 Load: 37.6 t ADT: 350
Showing 11,451-11,500 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.