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
CH 7
FairOver: CASSEL CREEK
.5 MI W CHARLESTON, Coles, IL
Built 1986 Load: 32.4 t ADT: 550
TR 247 A
FairOver: CLEAR CREEK
1 MI W LAKE PARADISE, Coles, IL
Built 1987 Load: 32.4 t ADT: 250
TR 281 A
FairOver: E BR HURRICANE CREEK
2.1 MI SE OF HUTTON, Coles, IL
Built 1989 Load: 32.4 t ADT: 50
TR 142
FairOver: FLAT BRANCH
3.5 MI E HUMBOLDT, Coles, IL
Built 1986 Load: 32.4 t ADT: 25
TR 144
FairOver: SOUTH FORK
3 MI SE OF LERNA, Coles, IL
Built 1987 Load: 32.4 t ADT: 25
TR 148
FairOver: UNION DRAIN DIT #3
2.7 MI N CHARLESTON, Coles, IL
Built 1988 Load: 32.4 t ADT: 75
FAU 7702(CH 7)
FairOver: KICKAPOO CREEK
1.5 MI SE MATTOON, Coles, IL
Built 1989 Load: 32.4 t ADT: 2,950
TR 68
FairOver: CLEAR CREEK
2 MI N TRILLA, Coles, IL
Built 1988 Load: 32.4 t ADT: 450
TR 174
FairOver: FLAT BRANCH
5 MI E HUMBOLDT, Coles, IL
Built 1989 Load: 32.4 t ADT: 25
TR 213
FairOver: IC RR
IN MAGNET, Coles, IL
Built 1988 Load: 32.4 t ADT: 150
TR 63
FairOver: DONICA CREEK
4 MI S OF OAKLAND, Coles, IL
Built 1989 Load: 32.4 t ADT: 25
TR 239
FairOver: BR HURRICANE CREEK
1 MI NW OF HUTTON, Coles, IL
Built 1987 Load: 32.4 t ADT: 50
TR 111
FairOver: DRAINAGE DITCH
4 MI NNW CHARLESTON, Coles, IL
Built 1989 Load: 32.4 t ADT: 50
TR 197
FairOver: STREAM
1 MI SE COLES AIRPOR, Coles, IL
Built 1990 Load: 32.4 t ADT: 150
FAS 1673(CH 28)
FairOver: DRAINAGE DITCH
3 MI SE HUMBOLDT, Coles, IL
Built 1990 Load: 32.4 t ADT: 250
TR 16 A
FairOver: KASKASKIA RIVER
1.7 MI S COOK'S MILL, Coles, IL
Built 1996 Load: 32.4 t ADT: 125
Muni 7000
FairOver: HOG BRANCH
.5 MI NW OF OAKLAND, Coles, IL
Built 1995 Load: 32.4 t ADT: 125
TR 287
FairOver: JAKES BRANCH
2 MI S OF HUTTON, Coles, IL
Built 2007 Load: 32.4 t ADT: 50
TR 79 A
FairOver: DRAINAGE DITCH
1 MI SE OF BUSHTON, Coles, IL
Built 2001 Load: 32.4 t ADT: 50
FAU 7624(POLK AVE)
FairOver: RILEY CREEK
7.5 MI W CHARLESTON, Coles, IL
Built 1996 Load: 32.4 t ADT: 550
TR 43
FairOver: FLAT BRANCH
4 MI E OF HUMBOLDT, Coles, IL
Built 2001 Load: 32.4 t ADT: 50
TR 96A
FairOver: RILEY CREEK
4.2 MI NE OF MATTOON, Coles, IL
Built 1999 Load: 32.4 t ADT: 1,150
CH 17
FairOver: MILL CREEK
1 MI W OF WESTFIELD, Coles, IL
Built 2011 Load: 32.4 t ADT: 125
TR 51
FairOver: DONICA CREEK
5 MI SE OF OAKLAND, Coles, IL
Built 1998 Load: 32.4 t ADT: 25
TR 174
FairOver: CASSEL CREEK
2.5 MI NW CHARLESTON, Coles, IL
Built 2012 Load: 32.4 t ADT: 100
TR-77
FairOver: East Br Donica Creek
5.2 MI SE OAKLAND, Coles, IL
Built 2017 Load: 32.4 t ADT: 25
TR 17A
FairOver: GREASY CREEK
2.4 MI N OF RARDIN, Coles, IL
Built 2011 Load: 32.4 t ADT: 50
TR 263
FairOver: MUDDY CREEK
1.5 MI NE TRILLA, Coles, IL
Built 2013 Load: 32.4 t ADT: 50
CH 3
FairOver: Polecat Creek
0.5 Mi. SW Ashmore, Coles, IL
Built 2014 Load: 32.4 t ADT: 150
CH16(FAS 1672)
FairOver: GREASY CREEK
2.25 MI W BUSHTON, Coles, IL
Built 1979 Load: 32.4 t ADT: 225
TR 46
FairOver: BUTTERMILK DITCH
2.5 MI W OF TRILLA, Coles, IL
Built 1982 Load: 32.4 t ADT: 50
FAU 7666(DEWITT AV
FairOver: IC RR
MATTOON- US 45, Coles, IL
Built 1994 Load: 32.4 t ADT: 7,800
CHAS ST(MS 3100 A)
FairOver: POLECAT CREEK
ASHMORE, Coles, IL
Built 1983 Load: 32.4 t ADT: 400
RICHMOND AVE(FAU76
FairOver: IC RR
MATTOON, Coles, IL
Built 2002 Load: 32.4 t ADT: 2,450
BROADWAY AVE(FAU76
FairOver: IC RR
MATTOON, Coles, IL
Built 2002 Load: 32.4 t ADT: 1,225
CHAMP AVE (FAU 766
FairOver: CN/ICRR
CHAMP AVE - MATTOON, Coles, IL
Built 2004 Load: 32.4 t ADT: 700
FAS 673 (LERNA RD)
FairOver: STREAM
MP 3.90, Coles, IL
Built 1909 Load: 32.4 t ADT: 2,950
IL 68 (DUNDEE RD)
FairOver: WHEELING DRN DTCH
0.6 M W US 45, Cook, IL
Built 1900 Load: 32.4 t ADT: 24,900
I- 90,94 RYAN ELEV
FairOver: S BR CHI RIVER
0.2 M N I-55, Cook, IL
Built 1962 Load: 32.4 t ADT: 229,200
I-290 WB (NB)
FairOver: RR - UP (SOUTH)
0.6 M S IL 64, Cook, IL
Built 1958 Load: 32.4 t ADT: 59,750
IL 72
FairOver: TRIB OF W BR SALT CR
0.4M E OF PLUM GROVE, Cook, IL
Built 1930 Load: 32.4 t ADT: 36,400
IL 64 (NORTH AVE)
FairOver: DITCH
BETWEEN 20TH & 21ST, Cook, IL
Built 1927 Load: 32.4 t ADT: 50,800
NEW AVE
FairOver: DITCH
0.3M W of Stephen St, Cook, IL
Built 1950 Load: 32.4 t ADT: 6,050
IL 83
FairOver: DITCH
0.4M W of Harlem, Cook, IL
Built 1931 Load: 32.4 t ADT: 15,900
TORRENCE AVE
FairOver: DITCH
0.4 M N SAUK TR, Cook, IL
Built 1953 Load: 32.4 t ADT: 6,900
WOLF RD
FairOver: MARLEY CRK S-XING
.1M S of US6 SW Hwy, Cook, IL
Built 1927 Load: 32.4 t ADT: 6,900
I- 55 STEVENSON
FairOver: RR - CN SPUR
0.5 M W IL 43, Cook, IL
Built 1964 Load: 32.4 t ADT: 70,250
EAST AVE
FairOver: DITCH
300' N OF 58TH, Cook, IL
Built 1985 Load: 32.4 t ADT: 23,200
26TH ST
FairOver: THORN CREEK
1.0 M E OF WESTERN, Cook, IL
Built 1928 Load: 32.4 t ADT: 6,200
PALATINE RD
FairOver: SALT CREEK
0.3 M E QUENTIN RD, Cook, IL
Built 1930 Load: 32.4 t ADT: 12,000
Showing 7,601-7,650 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.