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-13 HOGE RD
FairOver: WEST FORK NETTLE CR
.65 MI NW TR 70, Grundy, IL
Built 1981 Load: 36.3 t ADT: 25
POPPY GARDEN ROAD
FairOver: GREEN RIVER
0.2 MI EAST OF IL 84, Henry, IL
Built 1978 Load: 36.3 t ADT: 1,850
ILL 127
FairOver: DRAINAGE DITCH
ECL OF MURPHYSBORO, Jackson, IL
Built 1958 Load: 36.3 t ADT: 5,450
TR 309
FairOver: LITTLE CRAB ORCHARD
N LNE SEC 31-9-1, Jackson, IL
Built 1980 Load: 36.3 t ADT: 900
TR-42 (Ehlers Rd)
FairOver: Youngs Creek
4.0 MI SW KANEVILLE, Kane, IL
Built 1984 Load: 36.3 t ADT: 125
TR 34
FairOver: HORSE CR W BR
BONFIELD, Kankakee, IL
Built 1983 Load: 36.3 t ADT: 75
ILL 17
FairOver: FITCH CREEK
2 MI W OF LAFAYETTE, Knox, IL
Built 1989 Load: 36.3 t ADT: 425
IL 59
FairOver: SQUAW CREEK
1 M E OF WILSON RD, Lake, IL
Built 1973 Load: 36.3 t ADT: 13,600
PORT CLINTON RD
FairOver: INDIAN CREEK
.25 M W OF HALFDAY, Lake, IL
Built 1976 Load: 36.3 t ADT: 2,850
TR 97
FairOver: LITTLE INDIAN CR
N 4275 E 2190, LaSalle, IL
Built 1973 Load: 36.3 t ADT: 75
TR 354
FairOver: COUEL CREEK
E 21ST N 2050, LaSalle, IL
Built 1970 Load: 36.3 t ADT: 25
FAS-694
FairOver: THE SLOUGH
1 MI S CHAUNCEY, Lawrence, IL
Built 1986 Load: 36.3 t ADT: 650
IL 26
FairOver: UP RR
S EDGE OF DIXON, Lee, IL
Built 1989 Load: 36.3 t ADT: 14,200
TR 29
FairOver: TRIB W FORK MAZON R
2840 E, 3000 N, Livingston, IL
Built 1964 Load: 36.3 t ADT: 25
FAI 70 EB
FairOver: WENDELL BRANCH
1.6 M E FAI 55, Madison, IL
Built 1965 Load: 36.3 t ADT: 15,300
FAS 737
FairOver: WEST FK WOOD RIVERCK
3.5MI E GODFREY, Madison, IL
Built 1964 Load: 36.3 t ADT: 750
US 51 (FAP 322)
FairOver: EAST FORK KASKASKIA
10 MI S FAYETTE CO L, Marion, IL
Built 1958 Load: 36.3 t ADT: 2,750
TR 237
FairOver: E.F. LAMOINE RIVER
W.CTR-17-T5NR4W, McDonough, IL
Built 1977 Load: 36.3 t ADT: 75
ILL 165
FairOver: BR MACKINAW RIVER
14.2 MI N OF ILL 9, McLean, IL
Built 1990 Load: 36.3 t ADT: 750
FAS 617 / CH 18
FairOver: WOODS CREEK
4.5M S E NORTONVILLE, Morgan, IL
Built 1995 Load: 36.3 t ADT: 125
TR 131
FairOver: ASA CREEK
1.5 MI S SULLIVAN, Moultrie, IL
Built 1969 Load: 36.3 t ADT: 575
ILL 2
FairOver: STREAM
.6 MI SW MERIDIAN RD, Ogle, IL
Built 1999 Load: 36.3 t ADT: 6,300
KISHWAUKEE RD
FairOver: STILLMAN CREEK
1.5 MI E BYRON, Ogle, IL
Built 1965 Load: 36.3 t ADT: 3,000
ILL 29
FairOver: THENIUS CREEK
.25 MI N OF SPARLAND, Peoria, IL
Built 1947 Load: 36.3 t ADT: 3,250
DICKISON CEM RD
FairOver: BR OF KICKAPOO CREEK
SW-22-T10NR7E, Peoria, IL
Built 1979 Load: 36.3 t ADT: 225
US 54
FairOver: COCKELBUR SLOUGH
2.9M SW IL 96, Pike, IL
Built 1929 Load: 36.3 t ADT: 2,500
IL 104
FairOver: MCKEE CREEK
E EDGE CHAMBERSBURG, Pike, IL
Built 1984 Load: 36.3 t ADT: 1,000
I-72/US 36 (EB)
FairOver: SHRINERS DITCH
1.03M E I-172, Pike, IL
Built 1986 Load: 36.3 t ADT: 7,250
TR 417
FairOver: THE SNY
3.5 MI E LOUISIANA, Pike, IL
Built 1966 Load: 36.3 t ADT: 575
FAS 1591
FairOver: COLD RUN CREEK
1.0 MI N MARTINSBURG, Pike, IL
Built 2000 Load: 36.3 t ADT: 800
FAS 2936 (UNMARKED
FairOver: INDIAN CAMP CREEK
AT ULLIN CORP LIMITS, Pulaski, IL
Built 1920 Load: 36.3 t ADT: 1,000
CH-8 (FAS-939)
FairOver: UNNAMED CREEK
1 MI NE MOUNDS, Pulaski, IL
Built 1981 Load: 36.3 t ADT: 1,850
OLD ILL 29
FairOver: SENACHWINE CREEK
660N, 325E, Putnam, IL
Built 1920 Load: 36.3 t ADT: 550
BOAT CLUB ROAD
FairOver: STREAM
.01 MI E OF IL89, Putnam, IL
Built 2001 Load: 36.3 t ADT: 100
TR 232
FairOver: TRIB TO COX CREEK
TR 232 OVER TRIB COX, Randolph, IL
Built 1981 Load: 36.3 t ADT: 225
FAP-327 (US-50)
FairOver: FOX RIVER
1 MI W JCT ILL-130, Richland, IL
Built 1961 Load: 36.3 t ADT: 4,200
FAS 900
FairOver: BATTLE FORD CREEK
1.2 MI W OF ILL 145, Saline, IL
Built 1967 Load: 36.3 t ADT: 325
EAST LAKE SHORE DR
FairOver: LAKE SPFLD SLOUGH
0.50 mi E I-55, Sangamon, IL
Built 1997 Load: 36.3 t ADT: 2,500
TR 31 FANCY CREEKT
FairOver: SANGAMON RIVER
3 MI E SALISBURY, Sangamon, IL
Built 1983 Load: 36.3 t ADT: 200
FAS 2583
FairOver: LAMOINE RIVER
.3 NE BIRMINGHAM, Schuyler, IL
Built 1987 Load: 36.3 t ADT: 75
TOWNSHIP ROAD 58
FairOver: CEDAR CREEK
1.5 SE HUNTSVILLE, Schuyler, IL
Built 1982 Load: 36.3 t ADT: 75
TR 271 A
FairOver: W BR LITTLE WABASH R
3 MI E OF STRASBURG, Shelby, IL
Built 1991 Load: 36.3 t ADT: 125
US 20 EB
FairOver: SUMNER CREEK
1.2MI W WINNEBAGO CO, Stephenson, IL
Built 1959 Load: 36.3 t ADT: 12,700
IL 75
FairOver: PECATONICA RIVER
IN FREEPORT, Stephenson, IL
Built 1946 Load: 36.3 t ADT: 4,150
FAS 470 - CH 6
FairOver: MACKINAW RIVER
SW-8-T24NR2W, Tazewell, IL
Built 1957 Load: 36.3 t ADT: 3,750
IL 1 (FAP 332)
FairOver: N FORK VERMILION RIV
2 MI N OF ROSSVILLE, Vermilion, IL
Built 1940 Load: 36.3 t ADT: 4,550
ILL 135
FairOver: DAVID'S CR
.5 MI S LITTLE YORK, Warren, IL
Built 1930 Load: 36.3 t ADT: 1,150
ILL 40
FairOver: COON CREEK DITCH
1.2 MI N JCT ILL 172, Whiteside, IL
Built 1972 Load: 36.3 t ADT: 3,400
PENROSE RD.
FairOver: SPRING CREEK
1.5 MI. S.E. COLETA, Whiteside, IL
Built 1964 Load: 36.3 t ADT: 50
ILL 251 NB
FairOver: S KINNIKINNICK CR
0.8 M S HONONEGAH RD, Winnebago, IL
Built 1967 Load: 36.3 t ADT: 27,200
Showing 11,151-11,200 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.