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 24 WB
UnknownOver: US 45
1.5 MI N OF VIENNA, Johnson, IL
Built 1971 ADT: 2,550
I 24 EB
UnknownOver: US 45
1.5 MI N OF VIENNA, Johnson, IL
Built 1971 ADT: 2,550
I 24 EB
UnknownOver: TR 102 OLD BLOOMF'LD
1.2 MI N ILL 146, Johnson, IL
Built 1971 ADT: 50
I 24 WB
UnknownOver: TR 102 OLD BLOOMF'LD
1.2 MI N ILL 146, Johnson, IL
Built 1971 ADT: 50
I 24 EB
UnknownOver: ILL 146
1 MI E OF VIENNA, Johnson, IL
Built 1971 ADT: 5,000
I 24 WB
UnknownOver: ILL 146
1 MI E OF VIENNA, Johnson, IL
Built 1971 ADT: 5,000
I 24 EB
UnknownOver: TR 173 BETHLEHEM CH
7 MI S E OF VIENNA, Johnson, IL
Built 1971 ADT: 25
I 24 WB
UnknownOver: TR 173 BETHLEHEM CH
7 MI S E OF VIENNA, Johnson, IL
Built 1971 ADT: 25
TR 140 CENTRAL HIL
UnknownOver: INTERSTATE 24
9 MI S E OF VIENNA, Johnson, IL
Built 1970 ADT: 21,200
C.&E.I. R.R.
UnknownOver: ILL. 146
WEST VIENNA, Johnson, IL
Built 1900 ADT: 3,100
C.&E.I. R.R.
UnknownOver: FAS 927
SO OF GOREVILLE, Johnson, IL
Built 1900 ADT: 2,050
US 20
UnknownOver: RAYMOND ST
0.25 M W OF IL 25, Kane, IL
Built 1960 ADT: 4,500
US 20
UnknownOver: ST CHARLES ST
1 BLOCK W OF IL 25, Kane, IL
Built 1960 ADT: 8,300
US 20
UnknownOver: IL 25 (LIBERTY ST)
US 20 & LIBERTY ST, Kane, IL
Built 1959 ADT: 15,900
US 20 EB (LARKIN)
UnknownOver: US 20 WB
2.6 M W OF IL 31, Kane, IL
Built 1961 ADT: 31,800
IL 31
UnknownOver: US 20 BY PASS
3 M S OF I-90, Kane, IL
Built 1959 ADT: 47,200
IL 56 EB
UnknownOver: IL 47
4 M S I-88, Kane, IL
Built 1961 ADT: 17,300
IL 56 WB
UnknownOver: IL 47
4 M S I-88, Kane, IL
Built 1961 ADT: 15,800
GALENA BLVD WEST
UnknownOver: IL 56
1.3 M E OF IL 47, Kane, IL
Built 1961 ADT: 14,800
US 30
UnknownOver: IL 31 & BNSF RR
3.3 M NW OF US 34, Kane, IL
Built 1958 ADT: 225
RANDALL RD
UnknownOver: US 20 BY PASS
2.5 M W OF IL 31, Kane, IL
Built 1961 ADT: 30,100
CB B E RR
UnknownOver: NEW YORK ST
JUST E OF IL 31, Kane, IL
Built 1900 ADT: 9,850
CB+Q RR (BN RR)
UnknownOver: ILL 47, US 30
0.5 M S OF ILL 56, Kane, IL
Built 1900 ADT: 17,300
CB & O RR
UnknownOver: ILL 25
3 M N OF US 30, Kane, IL
Built 1900 ADT: 14,100
SOO RR
UnknownOver: US-20,IL-47 & IL-72
US 20-ILL47 AT ILL72, Kane, IL
Built 1935 ADT: 21,400
CHGO & NW RR
UnknownOver: US 20B (HIGHLAND A)
0.1 M W OF ILL 31, Kane, IL
Built 1893 ADT: 8,800
B.N.RR
UnknownOver: ILL 31 (LAKE ST)
1.6 MI N OF US 30, Kane, IL
Built 1961 ADT: 19,500
CHGO GRT WSTRN RR
UnknownOver: ILL 31 (SECOND ST)
.3 M N OF ILL 64, Kane, IL
Built 1962 ADT: 12,800
UP RR
UnknownOver: ILL 31 (BATAVIA AVE)
.4 M S OF ILL 38, Kane, IL
Built 1900 ADT: 7,800
CB & O RR
UnknownOver: GALENA BLVD
AURORA E OF FOX R., Kane, IL
Built 1900 ADT: 11,200
PRAIRIE PATH
UnknownOver: ILLINOIS 47
0.1 M N OF ILL 64, Kane, IL
Built 1900 ADT: 6,850
US 20
UnknownOver: MCLEAN BLVD
1.3 M W OF IL 31, Kane, IL
Built 2015 ADT: 26,500
HANKES RD
UnknownOver: IL 56
2.5 M NE OF IL 47, Kane, IL
Built 1963 ADT: 14,800
IL 47
UnknownOver: I- 88 EW TOLL-IL 110 CKC
5 M N OF IL 56, Kane, IL
Built 1972 ADT: 31,700
MAIN ST.
UnknownOver: I-88_REAGAN_MEM_TOLL
1.1 MI. W ILL-47, Kane, IL
Built 1972 ADT: 31,700
IL 25
UnknownOver: I- 90 ADAMS TOLL
1.5 M E of IL 31, Kane, IL
Built 2015 ADT: 116,500
IL 47
UnknownOver: I- 90 ADAMS TOLL
IL47 @ I90, Kane, IL
Built 2012 ADT: 57,800
IL 31
UnknownOver: I- 88 EW TOLL-IL 110 CKC
I-88; 0.4 M W IL 25, Kane, IL
Built 2008 ADT: 82,700
IL 31
UnknownOver: STERNS RD
3.1 M S OF US 20, Kane, IL
Built 2007 ADT: 15,400
WATSON ROAD
UnknownOver: I-88 E-W TOLL RD.
3 MI NW KANEVILLE, Kane, IL
Built 1972 ADT: 31,700
ORCHARD RD
UnknownOver: I-88 E.W. TOLLWAY
3 MI W RT 31, Kane, IL
Built 1985 ADT: 71,200
BNSF RAILROAD
UnknownOver: ORCHARD RD
2 MI. N. OF US 30, Kane, IL
Built 2001 ADT: 34,300
BNSF RAILROAD
UnknownOver: ORCHARD
2 MI. N. OF US 30, Kane, IL
Built 2001 ADT: 34,300
UNION PACIFIC RR
UnknownOver: BUNKER ROAD
0.3 MI N. KESLINGER, Kane, IL
Built 2005 ADT: 650
CNIC RR(CC&P)
UnknownOver: MCLEAN BLVD
0.25 Mi N. of IL 31, Kane, IL
Built 2009 ADT: 7,800
UP RR(C&NW)
UnknownOver: IL 25
3.3 Mi S. of US 20, Kane, IL
Built 2015 ADT: 10,700
BIKE PATH
UnknownOver: ORCHARD ROAD
.6M SO OF PRAIRIE ST, Kane, IL
Built 2001 ADT: 34,300
Great Western Trai
UnknownOver: Route 31 and Fox Riv
0.3 MI N of Rte 64, Kane, IL
Built 2002 ADT: 12,800
RANDALL RD BIKE PA
UnknownOver: RANDALL ROAD
90FT N SILVER GLENN, Kane, IL
Built 2009 ADT: 32,800
Pedestrian Walkway
UnknownOver: I-90
0.85 Mi W of Ill 31, Kane, IL
Built 2006 ADT: 101,700
Showing 2,101-2,150 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 |