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 18
GoodOver: BR SUGAR CREEK
0.5 MI W STANFORD, McLean, IL
Built 1994 Load: 48.0 t ADT: 25
TR 124
GoodOver: POPE CREEK
SE-1-T13NR4W, Mercer, IL
Built 1982 Load: 48.0 t ADT: 25
ILL ROUTE 84
GoodOver: SUGAR CR
1 MI N ILL92-E MOLIN, Rock Island, IL
Built 1974 Load: 48.0 t ADT: 3,400
US 150
GoodOver: COAL (WILSON CREEK)
COAL VALLEY, Rock Island, IL
Built 2005 Load: 48.0 t ADT: 3,875
FAI 255 NB
GoodOver: CANTEEN CREEK
0.1MI S MAD CO LINE, St. Clair, IL
Built 1984 Load: 48.0 t ADT: 21,750
IL 4
GoodOver: S1 Trib L Silver Crk
1.1 mi S of US 50, St. Clair, IL
Built 1998 Load: 48.0 t ADT: 6,050
TR-237 (Probst Roa
GoodOver: Trib to Richland Cr
0.5 Mi E. of Ill 159, St. Clair, IL
Built 2017 Load: 48.0 t ADT: 75
TR-171
GoodOver: CREEK
3 MI SW KEENSBURG, Wabash, IL
Built 1981 Load: 48.0 t ADT: 150
FAP 328-US 45
GoodOver: MARTIN CREEK
1.25 MI S GEFF, Wayne, IL
Built 2010 Load: 48.0 t ADT: 3,450
TR-229
GoodOver: Elm River
3.5 Mi. SW Mt. Erie, Wayne, IL
Built 2018 Load: 48.0 t ADT: 50
US 52
GoodOver: PRAIRIE CREEK
0.05 M N HOFF RD, Will, IL
Built 2008 Load: 48.0 t ADT: 6,250
IL 57
GoodOver: DISTILLERY HOLLOW
.3M N 24TH ST RD, Adams, IL
Built 1993 Load: 48.3 t ADT: 4,000
N GALENA ST
GoodOver: CARROLL CREEK
NW EDGE OF MT CARROL, Carroll, IL
Built 2018 Load: 48.3 t ADT: 300
ILL 10(FAS 1513)
GoodOver: CAMP CREEK
.5 MI W OF SEYMOUR, Champaign, IL
Built 2007 Load: 48.3 t ADT: 1,950
FAP 326 (IL 47)
GoodOver: SANGAMON RIVER
4.5 MI N OF US 136, Champaign, IL
Built 2007 Load: 48.3 t ADT: 3,050
JOLIET RD
GoodOver: FLAG CREEK
0.8 M NE DUPAGE CO, Cook, IL
Built 1959 Load: 48.3 t ADT: 12,500
125th
GoodOver: Stony Creek
.04 mi S Benck Dr, Cook, IL
Built 1996 Load: 48.3 t ADT: 600
I-94 Edens Spur WB
GoodOver: Union Pacific RR
1.5 Mi E of Il 43, Cook, IL
Built 2020 Load: 48.3 t ADT: 27,400
I-94 Edens Spur EB
GoodOver: Union Pacific RR
1.5 Mi E of IL 43, Cook, IL
Built 2020 Load: 48.3 t ADT: 27,400
IL 38/FAP 567E
GoodOver: UNION DITCH #1
1.9 MI E SOMONAUK RD, DeKalb, IL
Built 2003 Load: 48.3 t ADT: 7,700
IL 49 (FAP 836)
GoodOver: BRUSHY FORK
1.0 MI N OF US 36, Edgar, IL
Built 1928 Load: 48.3 t ADT: 1,000
TR 195
GoodOver: DIETERICH CREEK
1 MI SW DIETERICH, Effingham, IL
Built 2015 Load: 48.3 t ADT: 75
I-57 NB
GoodOver: POND CREEK
S OF SCL W FRANKFORT, Franklin, IL
Built 2022 Load: 48.3 t ADT: 21,600
FAS 1880 CROCKER R
GoodOver: LITTLE MUDDY RIVER
CROCKER RD, Franklin, IL
Built 1900 Load: 48.3 t ADT: 250
IL 96
GoodOver: DRAINAGE DITCH
.64M S IL 9, NIOTA, Hancock, IL
Built 2004 Load: 48.3 t ADT: 1,700
CO HWY 19
GoodOver: PANTHER CREEK
4.1 MI W OF PLYMOUTH, Hancock, IL
Built 1965 Load: 48.3 t ADT: 350
FS RTE 750
GoodOver: CAVE CREEK
2 MILES N. OF POMONA, IL, Jackson, IL
Built 2000 Load: 48.3 t ADT: 125
OR 163
GoodOver: STREAM
1 MI S STONEFORT, Johnson, IL
Built 2014 Load: 48.3 t
RECKINGER ROAD
GoodOver: INDIAN CREEK
.1MI W FARNSWORTH AV, Kane, IL
Built 2011 Load: 48.3 t ADT: 3,200
I-90
GoodOver: UP RR
2 MI W RANDALL, Kane, IL
Built 2014 Load: 48.3 t ADT: 36,800
I-90
GoodOver: UP RR
2 MI W RANDALL RD, Kane, IL
Built 2013 Load: 48.3 t ADT: 36,800
ILL 8
GoodOver: HICKORY CREEK
2 MI SE OF MAQUON, Knox, IL
Built 2022 Load: 48.3 t ADT: 900
US 34 FAP 587
GoodOver: LITTLE VERMILION
2.2 MI E OF IL 251, LaSalle, IL
Built 2018 Load: 48.3 t ADT: 5,250
ARMINGTON SPUR
GoodOver: SUGAR CREEK
TAZWL CL 1M S ARMGTN, Logan, IL
Built 2004 Load: 48.3 t ADT: 425
IL 255 NB
GoodOver: CAHOKIA DIVERSION
S. CORP LMTS ROXANNA, Madison, IL
Built 1995 Load: 48.3 t ADT: 28,300
IL 255 SB
GoodOver: CAHOKIA DIVERSION
S. CORP LMTS ROXANNA, Madison, IL
Built 1995 Load: 48.3 t ADT: 28,300
US 50
GoodOver: LACKEY CREEK
E UP RR IN SALEM, Marion, IL
Built 2010 Load: 48.3 t ADT: 6,800
ILL 9
GoodOver: WEST FORK SUGAR CR
4.4 MI NW OF ILL 122, McLean, IL
Built 2007 Load: 48.3 t ADT: 1,950
ILL 97 & 123
GoodOver: ROCKY BRANCH CREEK
AT NEW SALEM ST PARK, Menard, IL
Built 1990 Load: 48.3 t ADT: 4,200
NOKOMIS/FILLMORE R
GoodOver: HURRICANE CR
7 M SOUTH NOKOMIS, Montgomery, IL
Built 2010 Load: 48.3 t ADT: 450
DICKINSON LANE
GoodOver: DICKINSON RUN
NE SEC 22 T10N R9E, Peoria, IL
Built 2023 Load: 48.3 t ADT: 25
FAI 72 (WB)
GoodOver: UPRR/RECREATION DR
1.3M W I-55, Sangamon, IL
Built 1966 Load: 48.3 t ADT: 20,450
TR 22
GoodOver: Opossum Creek
2.8 Mi. E Oconee, Shelby, IL
Built 2018 Load: 48.3 t ADT: 100
IL 157
GoodOver: CSXRR
Caseyville N C.L., St. Clair, IL
Built 1990 Load: 48.3 t ADT: 11,300
I-74
GoodOver: LICK CREEK
E OF DANVILLE, Vermilion, IL
Built 1964 Load: 48.3 t ADT: 18,300
TR 66 (McKinley Rd
GoodOver: Branch of Mud Creek
3 MI. SW Oakdale, Washington, IL
Built 2019 Load: 48.3 t ADT: 50
IL 53 SB
GoodOver: JACKSON CREEK
5.5 M S OF I-80, Will, IL
Built 1942 Load: 48.3 t ADT: 15,800
IL 53 NB
GoodOver: JACKSON CREEK
5.5 M S OF I-80, Will, IL
Built 1942 Load: 48.3 t ADT: 15,800
IL 96
GoodOver: JENKINS CREEK
1.3M N IL 61 IN URSA, Adams, IL
Built 1994 Load: 48.6 t ADT: 3,450
IL 89 FAP 698
GoodOver: RI RAILROAD
0.60 MI S OF US 6, Bureau, IL
Built 2008 Load: 48.6 t ADT: 4,450
Showing 24,601-24,650 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 |