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
ILL 90
FairOver: BRANCH KICKAPOO CR
5 MI E OF PRINCEVILE, Peoria, IL
Built 1926 Load: 49.2 t ADT: 1,250
FAS 1720 (ILL-250)
FairOver: SUGAR CREEK
4.25 MI W OLNEY, Richland, IL
Built 1996 Load: 49.2 t ADT: 2,250
OLD IL 13 WEST
FairOver: POSSUM TAIL BRANCH
1.8 MI E W'MSON CO, Saline, IL
Built 1942 Load: 49.2 t ADT: 375
WASHINGTON ST-IL 8
FairOver: DOLANS CREEK
AT ARNOLD RD, Tazewell, IL
Built 1999 Load: 49.2 t ADT: 19,900
IL 57 (GARDNER EXP
FairOver: CURTIS CREEK
1.6M S US 24(MAINE), Adams, IL
Built 1959 Load: 49.6 t ADT: 5,150
MATTIS AVE(FAU 715
FairOver: PHINNEY BRANCH
0.75 MI S KIRBY AVE, Champaign, IL
Built 1977 Load: 49.6 t ADT: 5,500
ILL 1 (FAP 332)
FairOver: MILL CREEK
N OF WEST UNION, Clark, IL
Built 2005 Load: 49.6 t ADT: 2,400
IL 50 (CICERO AVE
FairOver: CREEK N OF 151ST ST
.5 M S IL 83 (147TH), Cook, IL
Built 1971 Load: 49.6 t ADT: 25,700
IL 43 (WAUKEGAN)
FairOver: RR - UP
1.4 S IL 68, Cook, IL
Built 1993 Load: 49.6 t ADT: 21,000
I- 94 BISHOP FORD
FairOver: SERVICE DRIVE
6.7 M SE I-57, Cook, IL
Built 1992 Load: 49.6 t ADT: 166,900
IL 121 (FAP 773)
FairOver: EMBARRAS RIVER
NW CL GREENUP, Cumberland, IL
Built 1960 Load: 49.6 t ADT: 3,450
I-70 (WB)
FairOver: RANGE CREEK
I-70 OVER RANGE CR, Cumberland, IL
Built 1970 Load: 49.6 t ADT: 11,750
I-70 (EB)
FairOver: RANGE CREEK
I-70 OVER RANGE CK, Cumberland, IL
Built 1970 Load: 49.6 t ADT: 11,750
ILL 113
FairOver: MAZON RIVER
3.12 M E. OF ILL 47, Grundy, IL
Built 2000 Load: 49.6 t ADT: 4,450
ILL 34 & ILL 146
FairOver: THREEMILE CREEK
1.5 MI E OF ILL 146, Hardin, IL
Built 2009 Load: 49.6 t ADT: 1,550
ILL 94
FairOver: MIDDLE CREEK
1 MI N STRONGHURST, Henderson, IL
Built 2010 Load: 49.6 t ADT: 1,350
US 24
FairOver: SUGAR CR
W EDGE OF WATSEKA, Iroquois, IL
Built 1979 Load: 49.6 t ADT: 3,750
IL 37
FairOver: ATCHISON CREEK
8 MI S IL 148, Jefferson, IL
Built 2020 Load: 49.6 t ADT: 3,700
ILL 17
FairOver: CRANE CR
2.0 M E OF REDDICK, Kankakee, IL
Built 2003 Load: 49.6 t ADT: 2,300
ILL 41
FairOver: CEDAR CREEK
0.75 MI E OF US 34, Knox, IL
Built 1986 Load: 49.6 t ADT: 4,300
IL 137
FairOver: RR - UP & OLD SKOKIE
0.1 M E OF I-94, Lake, IL
Built 1958 Load: 49.6 t ADT: 29,900
ILL 4
FairOver: NSRR
2.0 M N STAUNTON, Macoupin, IL
Built 1959 Load: 49.6 t ADT: 2,800
N SIU ENT RD SB
FairOver: CAHOKIA CREEK
0.6 MI S ILL 143, Madison, IL
Built 1967 Load: 49.6 t ADT: 2,775
ILL 143
FairOver: HIGHLAND LAKE
2 M W HIGHLAND, Madison, IL
Built 1962 Load: 49.6 t ADT: 8,850
IL 2
FairOver: BN RAILROAD
S EDGE OREGON, Ogle, IL
Built 2012 Load: 49.6 t ADT: 4,000
ILL 78
FairOver: SWAB RUN
4 MI N OF ELMWOOD, Peoria, IL
Built 1997 Load: 49.6 t ADT: 550
OLD US 24 FRNT RD
FairOver: DRY RUN CREEK
0.1 MI E OF GLASFORD, Peoria, IL
Built 2008 Load: 49.6 t ADT: 50
ILL RT 92
FairOver: HILLS CREEK
.1 MI E 115TH ST, Rock Island, IL
Built 1940 Load: 49.6 t ADT: 2,650
OLD US 36
FairOver: SANGAMON RIVER
SW EDGE RIVERTON, Sangamon, IL
Built 1956 Load: 49.6 t ADT: 2,500
ILL 13 & 15 WB
FairOver: TRIB TO RICHLAND CRK
1.7 M E JCT ILL 159, St. Clair, IL
Built 1955 Load: 49.6 t ADT: 12,600
ILL 13 & 15 EB
FairOver: TRIB TO RICHLAND CRK
1.7 M E JCT ILL 159, St. Clair, IL
Built 1955 Load: 49.6 t ADT: 12,600
ILL 3
FairOver: CAHOKIA CANAL
0.3 M N NATIONAL CTY, St. Clair, IL
Built 1935 Load: 49.6 t ADT: 4,600
ILL 29
FairOver: LICK CREEK
1 MI N OF ILL 98, Tazewell, IL
Built 2007 Load: 49.6 t ADT: 19,600
IL 172
FairOver: COUNTY DITCH
2 MI N TAMPICO, Whiteside, IL
Built 2014 Load: 49.6 t ADT: 950
IL 140
FairOver: Little Silver Creek
3.1mi E of IL 160, Bond, IL
Built 1930 Load: 49.9 t ADT: 1,600
IL 40 FAP 646
FairOver: DITCH # 4
3 MI. N. OF I-80, Bureau, IL
Built 1993 Load: 49.9 t ADT: 2,400
IL 125
FairOver: BNSF RR
1M E US67-BEARDSTOWN, Cass, IL
Built 1956 Load: 49.9 t ADT: 6,600
FAP-327 (US-50)
FairOver: STREAM
NE OF XENIA, Clay, IL
Built 1970 Load: 49.9 t ADT: 2,700
I-90WB TO NB STONY
FairOver: GROUND
0.22 M S 79TH P7C, Cook, IL
Built 1958 Load: 49.9 t ADT: 4,000
FAP 116 (IL 130)
FairOver: BELL BRANCH
N EDGE OF GREENUP, Cumberland, IL
Built 1931 Load: 49.9 t ADT: 2,950
IL 94
FairOver: SLATER CREEK
2.8M NW IL61,BOWEN, Hancock, IL
Built 1991 Load: 49.9 t ADT: 850
FAP-95(ILL 33)
FairOver: W FORK BIG MUDDY
.75 MI E EFF CO LINE, Jasper, IL
Built 2012 Load: 49.9 t ADT: 5,900
ILL 16
FairOver: TRIB TO BOYER CREEK
2.25 E OF FIELDON, Jersey, IL
Built 1925 Load: 49.9 t ADT: 3,750
US45/52 (FAP330)
FairOver: SOLDIERS CREEK
50 FT N. COURT ST., Kankakee, IL
Built 2001 Load: 49.9 t ADT: 19,100
US 41
FairOver: CREEK
S OF MILL CREEK, Lake, IL
Built 1999 Load: 49.9 t ADT: 24,500
ILL 47
FairOver: 5 M CREEK
0.3 M N. OF RTE 116, Livingston, IL
Built 1929 Load: 49.9 t ADT: 2,150
TR 107
FairOver: WOLF CREEK
1205 E, 2100 N, Livingston, IL
Built 1961 Load: 49.9 t ADT: 325
IL 54
FairOver: LAKE FORK CREEK
1.5M NE CORNLAND CTR, Logan, IL
Built 1940 Load: 49.9 t ADT: 1,400
ILL 145
FairOver: MASSAC CREEK
4 MI S POPE CO LINE, Massac, IL
Built 1932 Load: 49.9 t ADT: 2,050
US 45-FAS 960
FairOver: MAIN DITCH
1 MI S JOHNSON CO, Massac, IL
Built 2001 Load: 49.9 t ADT: 1,250
Showing 13,251-13,300 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.