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
I-74
GoodOver: MUD CREEK
0.5 MI W OF I-80, Henry, IL
Built 1962 Load: 89.1 t ADT: 15,000
I-57 SB
GoodOver: SPRING CREEK
2.5 MI S BUCKLEY INT, Iroquois, IL
Built 2012 Load: 89.1 t ADT: 8,800
I-57 NB
GoodOver: SPRING CREEK
2.5MI S BUCKLEY INTR, Iroquois, IL
Built 2012 Load: 89.1 t ADT: 8,800
US 51
GoodOver: STREAM
1 MI N OF MAKANDA, Jackson, IL
Built 1977 Load: 89.1 t ADT: 6,400
EAST STAGECOACH RO
GoodOver: CLEAR CREEK
1 MILE WEST WARREN, Jo Daviess, IL
Built 2020 Load: 89.1 t ADT: 850
IL 31 RMP 2 US30
GoodOver: STREAM
under WB US30 ramp, Kane, IL
Built 2014 Load: 89.1 t ADT: 5,250
US 30
GoodOver: DITCH
200' W of IL31, Kane, IL
Built 2014 Load: 89.1 t ADT: 40,300
Armour Rd (FAU 617
GoodOver: IL Central RR
0.3 M W of IL 50, Kankakee, IL
Built 2024 Load: 89.1 t ADT: 8,050
FAS 379-IL 167
GoodOver: North Creek
0.09 mi SE of 34&167, Knox, IL
Built 2020 Load: 89.1 t ADT: 1,150
FAS 379-IL 167
GoodOver: North Creek
.15mi S US 34/IL 167, Knox, IL
Built 2020 Load: 89.1 t ADT: 1,450
COUNTY HIGHWAY 08
GoodOver: HERMON CREEK
S.CTR-18-T9NR2E, Knox, IL
Built 1972 Load: 89.1 t ADT: 425
TR 76
GoodOver: TRIB TO POPE CREEK
SE1/4 SEC11 R1E T13N, Knox, IL
Built 1997 Load: 89.1 t ADT: 50
TR 171
GoodOver: TRIB TO SPOON RIVER
NE-12-T11NR3E, Knox, IL
Built 1996 Load: 89.1 t ADT: 25
TR 81
GoodOver: TRIB TO FORMAN CREEK
2308N 1788E, Knox, IL
Built 2012 Load: 89.1 t ADT: 50
F-F STREET
GoodOver: COURT CREEK
0.02 S. OF E-E ST., Knox, IL
Built 1994 Load: 89.1 t ADT: 50
IL 22
GoodOver: W FK N BR CHICAGO RV
0.1 M W I-94, Lake, IL
Built 1956 Load: 89.1 t ADT: 28,700
ILL 18
GoodOver: EAGLE CR
1.70 MI.W.OF ILL 23, LaSalle, IL
Built 1972 Load: 89.1 t ADT: 3,550
ILL 23 FAP 68
GoodOver: GOOSE CR
0.7 MI N OF US 6, LaSalle, IL
Built 1977 Load: 89.1 t ADT: 18,300
US 6
GoodOver: CLARK RUN CREEK
0.71 MI E OF ILL 178, LaSalle, IL
Built 1984 Load: 89.1 t ADT: 5,700
TR 57A
GoodOver: GOOSEBERRY CR
3210 E, 2600 N, Livingston, IL
Built 1986 Load: 89.1 t ADT: 50
TR 268C
GoodOver: BR OF VERMILION R
695 N, 3200 E, Livingston, IL
Built 1985 Load: 89.1 t ADT: 50
TR 291
GoodOver: SPANISH CR
4 MI S CARLINVILLE, Macoupin, IL
Built 1977 Load: 89.1 t ADT: 150
FAI 55 FR#1709
GoodOver: STREAM
SE FAI 55 LIVINGSTON, Madison, IL
Built 1973 Load: 89.1 t ADT: 200
IL 159
GoodOver: JUDYS BRANCH CRK
.21 MI N I270, Madison, IL
Built 1991 Load: 89.1 t ADT: 26,700
IL 255 - FAP 310
GoodOver: Drains to retention
just S OF IL 111, Madison, IL
Built 2001 Load: 89.1 t ADT: 23,000
IL 255 - FAP 310
GoodOver: ROCK CREEK
N OF SEMINARY RD, Madison, IL
Built 2010 Load: 89.1 t ADT: 13,600
IL 255 (FAP 310)
GoodOver: W. FORK WOODRIVER CR
.4MI E. OF VONNAHMEN, Madison, IL
Built 2008 Load: 89.1 t ADT: 14,900
TR 178
GoodOver: TRIB TO SHERRY CK
2.0 MI N PRAIRIETOWN, Madison, IL
Built 1982 Load: 89.1 t ADT: 250
TR 26
GoodOver: Scholes Branch
T13N-R9E-4PM Sec 6, Marshall, IL
Built 2013 Load: 89.1 t ADT: 25
TR 197
GoodOver: DOUGLAS CREEK
E.CTR-34-T14NR4W, Mercer, IL
Built 1995 Load: 89.1 t ADT: 25
IL 267
GoodOver: COAL CREEK
3.5M S US 67, Morgan, IL
Built 1942 Load: 89.1 t ADT: 2,150
US 67
GoodOver: UNNAMED STREAM
4.2M N US67/I72/US36, Morgan, IL
Built 1998 Load: 89.1 t ADT: 5,450
US 67
GoodOver: N LITTLE SANDY CR
7.75 MI S I72/US36, Morgan, IL
Built 2007 Load: 89.1 t ADT: 4,250
US 67
GoodOver: SANDY CREEK TRIB
4.75 MI S I 72/US 36, Morgan, IL
Built 2003 Load: 89.1 t ADT: 4,250
FAP 320 (IL 121)
GoodOver: DUNN BRANCH
3.0 MI E OF BETHANY, Moultrie, IL
Built 1969 Load: 89.1 t ADT: 4,600
FIRST AVE
GoodOver: RYLEY DITCH
EAST EDGE ROCHELLE, Ogle, IL
Built 2004 Load: 89.1 t ADT: 2,200
SW RAMP I-88 & IL2
GoodOver: STREAM
0.2 MI W OF ILL 251, Ogle, IL
Built 1972 Load: 89.1 t ADT: 600
SMITHVILLE RD
GoodOver: TIBER CREEK
S.CTR-27-TRIVOLA TWP, Peoria, IL
Built 1977 Load: 89.1 t ADT: 475
GRAHAM CHAPEL ROAD
GoodOver: TRIB OF KICKAPOO CR
SE1/4-24-LIMESTONE, Peoria, IL
Built 2023 Load: 89.1 t ADT: 525
FAS 495
GoodOver: MADDEN CREEK
NORTH OF MANSFIELD, Piatt, IL
Built 1971 Load: 89.1 t ADT: 1,850
I-72
GoodOver: TRIB BLUE CREEK
0.36 mi E TR 362, Pike, IL
Built 1988 Load: 89.1 t ADT: 9,900
TR 115
GoodOver: Hadley Creek Trib.
3.5 mi NE Barry, Pike, IL
Built 2013 Load: 89.1 t ADT: 50
IL 4 (MAIN ST.)
GoodOver: POLECAT CR TRIBUTARY
.5M S MANSION-CHATHM, Sangamon, IL
Built 1978 Load: 89.1 t ADT: 18,500
JEFFERSON RD/ CH 2
GoodOver: HAZEL CREEK
2.00MI E ILL 13, St. Clair, IL
Built 1972 Load: 89.1 t ADT: 275
FAS 331
GoodOver: GLENBURN CREEK
1.75 MI N OF OAKWOOD, Vermilion, IL
Built 1967 Load: 89.1 t ADT: 1,200
FAP 709(US 136)
GoodOver: STREAM
2 MI NW ARMSTRONG, Vermilion, IL
Built 1997 Load: 89.1 t ADT: 1,550
US 67
GoodOver: DRAINAGE DITCH
1.25MI S of IL 116, Warren, IL
Built 2002 Load: 89.1 t ADT: 3,350
US 67
GoodOver: DRAINAGE DITCH
0.6MI S of IL 116, Warren, IL
Built 2002 Load: 89.1 t ADT: 3,400
US 67
GoodOver: DRAINAGE DITCH
0.6MI N of IL 116, Warren, IL
Built 2002 Load: 89.1 t ADT: 4,000
FAS 450-CH 19
GoodOver: BR SWAN CR
W.CTR-22-T8NR1W, Warren, IL
Built 1982 Load: 89.1 t ADT: 550
Showing 25,451-25,500 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |