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
TR 10A
FairOver: STREAM
1.25 MI NE THAWVILLE, Iroquois, IL
Built 1982 Load: 32.4 t ADT: 25
TR 360
FairOver: STREAM
.25 MI S CH 40, Iroquois, IL
Built 1976 Load: 32.4 t ADT: 25
TR 191
FairOver: DRAINAGE DITCH
3 MI W SHELDON, Iroquois, IL
Built 1987 Load: 32.4 t ADT: 150
TR 185
FairOver: TRIB IROQUOIS RIVER
3.25W, 5S SHELDON, Iroquois, IL
Built 1989 Load: 32.4 t ADT: 75
TR225
FairOver: UNNAMED STREAM
2 MI S,1.5 E.SHELDON, Iroquois, IL
Built 1991 Load: 32.4 t ADT: 50
TR 331A
FairOver: TRIB SUGAR CREEK
2.7MI E CH4 ON CH 20, Iroquois, IL
Built 1976 Load: 32.4 t ADT: 75
TR 380 A
FairOver: SUGAR CREEK
.5 M N CH 9, Iroquois, IL
Built 1988 Load: 32.4 t ADT: 50
TR 380A
FairOver: TRIB OF SUGAR CREEK
.5N, 1W OF STOCKLAND, Iroquois, IL
Built 1990 Load: 32.4 t ADT: 50
TR 448
FairOver: UNNAMED TRIB
2 MI S. CH 10, Iroquois, IL
Built 1994 Load: 32.4 t ADT: 50
MS 6200
FairOver: PIGEON CR
0.5 MI E. CISSNA PK, Iroquois, IL
Built 2007 Load: 32.4 t
W CONCORD PLACE
FairOver: N SHELDON S CONCORD
W CONCORD PLACE, Iroquois, IL
Built 1985 Load: 32.4 t ADT: 50
ILL 149
FairOver: HALLS CREEK
1.3M NE ILL 13-127, Jackson, IL
Built 1939 Load: 32.4 t ADT: 2,800
FAS 921
FairOver: BIG MUDDY RIVER
0.9MI E OF DESOTO CL, Jackson, IL
Built 1980 Load: 32.4 t ADT: 450
TR 225
FairOver: WORTHEN BAYOU
S.LINE SEC.7-9-3, Jackson, IL
Built 1984 Load: 32.4 t ADT: 25
TOWNSHIP ROAD #80
FairOver: ROCKY FORK
EAST LINE SEC.23-7-4, Jackson, IL
Built 1984 Load: 32.4 t ADT: 25
TR 294
FairOver: SIX MILE CREEK
NE 1/4 SEC 6-7-1, Jackson, IL
Built 1987 Load: 32.4 t ADT: 600
TR 170
FairOver: CAMP CR TRIB
1.5 MI N OF AVA BLTP, Jackson, IL
Built 1989 Load: 32.4 t ADT: 75
TR 246-PUMPHOUSE R
FairOver: TRIB TO MUD CREEK
NW 1/4 SEC 23-9-2, Jackson, IL
Built 1995 Load: 32.4 t ADT: 500
TR 80
FairOver: TRIB TO ROCKY FORK
1.5 MI N OF AVA, Jackson, IL
Built 1995 Load: 32.4 t ADT: 25
TR347-SCHOOLHOUSE
FairOver: INDIAN CREEK
0.5 MI W CH 12, Jackson, IL
Built 1996 Load: 32.4 t ADT: 75
MORBER RD
FairOver: JOHNSON CREEK
.1 MILE W OF ILL 151, Jackson, IL
Built 2011 Load: 32.4 t ADT: 25
RENDLEMAN RD.
FairOver: TRIB.PILES FORK CRK.
CARBONDALE, Jackson, IL
Built 1984 Load: 32.4 t ADT: 2,200
TR-67
FairOver: PANTHER CREEK
1 MI NE YALE, Jasper, IL
Built 1979 Load: 32.4 t ADT: 100
TR-169
FairOver: CREEK
2 MI NE WILLOW HILL, Jasper, IL
Built 1979 Load: 32.4 t ADT: 50
TR 61
FairOver: HILL CREEK
2 MI NE GILA, Jasper, IL
Built 1985 Load: 32.4 t ADT: 50
TR 221
FairOver: HICKORY CR
2MI SE WILLOW HILL, Jasper, IL
Built 1987 Load: 32.4 t ADT: 25
CH-14
FairOver: EAST CROOKED CREEK
3.5 MI E FALMOUTH, Jasper, IL
Built 1993 Load: 32.4 t ADT: 200
TR203
FairOver: CROOKED CREEK
3.3 MI W WILLOW HILL, Jasper, IL
Built 1998 Load: 32.4 t ADT: 125
TR 93
FairOver: N FK EMBARRAS RIVER
2.5 MI SE YALE, Jasper, IL
Built 2002 Load: 32.4 t ADT: 20
TR 139
FairOver: EMBARRAS RIVER
2 MI W FALMOUTH, Jasper, IL
Built 2004 Load: 32.4 t ADT: 75
MAIN STREET #7000
FairOver: BIG MUDDY CREEK
WHEELER, Jasper, IL
Built 1990 Load: 32.4 t ADT: 150
I 57 NB
FairOver: EW RR
1.0 MI N ILL-15 INT, Jefferson, IL
Built 1967 Load: 32.4 t ADT: 21,300
I 57 SB
FairOver: L & N RR
1.0 MI N ILL-15 INT, Jefferson, IL
Built 1967 Load: 32.4 t ADT: 21,300
FAP-821 (ILL-15)
FairOver: TWO MILE CK
3 MI E MT VERNON, Jefferson, IL
Built 1958 Load: 32.4 t ADT: 4,600
FA 821 (ILL-15WB)
FairOver: CASEY FORK OVFL
MT VERNON, Jefferson, IL
Built 1958 Load: 32.4 t ADT: 3,100
I 57
FairOver: STREAM
.9 MI N ILL-15 INT, Jefferson, IL
Built 1967 Load: 32.4 t ADT: 21,300
IL 142
FairOver: DITCH
Just west of UP RR, Jefferson, IL
Built 1900 Load: 32.4 t ADT: 6,500
CH-14
FairOver: LITTLE MUDDY BRANCH
1 MI N SCHELLER, Jefferson, IL
Built 1978 Load: 32.4 t ADT: 200
TR-173
FairOver: SEVEN MILE CREEK
3MI NE MT VERNON, Jefferson, IL
Built 1979 Load: 32.4 t ADT: 200
CH-21
FairOver: SNOW CREEK
1.5 MI S BOYD, Jefferson, IL
Built 1981 Load: 32.4 t ADT: 850
TR-532
FairOver: PUNCHEON CREEK
2.5 MI N BLUFORD, Jefferson, IL
Built 1982 Load: 32.4 t ADT: 75
FAS 2825 CH 14
FairOver: NOVAK CREEK
5 MI SW WOODLAWN, Jefferson, IL
Built 1987 Load: 32.4 t ADT: 500
FAS 824
FairOver: TRIB GUN CREEK
0.5 MI W SPRING GARD, Jefferson, IL
Built 1990 Load: 32.4 t ADT: 250
FAS-2827 (CH-9)
FairOver: TRIB RAYSE CREEK
3.7 MI N WALTONVILLE, Jefferson, IL
Built 1992 Load: 32.4 t ADT: 950
FAS-830 (CH-6)
FairOver: JONES BRANCH
0.9 MI S BELLE RIVE, Jefferson, IL
Built 1993 Load: 32.4 t ADT: 450
TR-369B
FairOver: TRIB CASEY FORK
2 MI S MT VERNON, Jefferson, IL
Built 1984 Load: 32.4 t ADT: 275
CH-14
FairOver: RAYSE CREEK
5 MI NW WOODLAWN, Jefferson, IL
Built 1997 Load: 32.4 t ADT: 100
TR-178
FairOver: BIG MUDDY RIVER
2 MI W MT VERNON, Jefferson, IL
Built 1985 Load: 32.4 t ADT: 75
TR-435
FairOver: ATCHISON CREEK
4 MI W BELLE RIVE, Jefferson, IL
Built 1987 Load: 32.4 t ADT: 150
CH 18
FairOver: HURRICANE CREEK
4 MI SW SCHELLER, Jefferson, IL
Built 2002 Load: 32.4 t ADT: 75
Showing 8,251-8,300 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.