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-55 (NB)
FairOver: MACOUPIN CREEK
.3M S FARMRSVLE INT., Montgomery, IL
Built 1972 Load: 49.9 t ADT: 14,400
I-55 (SB)
FairOver: MACOUPIN CREEK
.3M S FARMRSVLE INT., Montgomery, IL
Built 1973 Load: 49.9 t ADT: 14,400
I-55
FairOver: THREE MILE BRANCH
2M S IL 108, Montgomery, IL
Built 1973 Load: 49.9 t ADT: 26,500
I-72 / US 36
FairOver: CLEAR CREEK TRIB
2.6M E BUFFALO INTCH, Sangamon, IL
Built 1975 Load: 49.9 t ADT: 14,300
W. WINTERS STREET
FairOver: ASH CREEK
700' WEST OF WARD DRIVE, St. Clair, IL
Built 1980 Load: 49.9 t ADT: 8,500
CH 3
FairOver: STREAM
IN ALVIN, Vermilion, IL
Built 1935 Load: 49.9 t ADT: 950
US 30
FairOver: SUNFISH SLOUGH
0.7 MI. W. OF IL 84, Whiteside, IL
Built 1999 Load: 49.9 t ADT: 9,650
US 52
FairOver: FORKED CREEK
3.2 M S HOFF RD, Will, IL
Built 1922 Load: 49.9 t ADT: 4,150
6TH ST
FairOver: KEITH CREEK
0.5 MI S OF E STATE, Winnebago, IL
Built 1984 Load: 49.9 t ADT: 3,900
I-57
FairOver: STREAM
3/4 MI N OF ILL-16, Coles, IL
Built 1966 Load: 50.2 t ADT: 21,000
ORCHARD GATEWAY BL
FairOver: E RUN BLACKBERRY CRE
0.29 MI E ORCHARD RD, Kane, IL
Built 2006 Load: 50.2 t ADT: 6,100
ILL 47/FAP 326
FairOver: VERMILION RIVER
.38 M S OF US 24, Livingston, IL
Built 1993 Load: 50.2 t ADT: 2,650
TR 239
FairOver: N FORK LAKE FORK CK
1.5 MI S NARITA, Logan, IL
Built 1971 Load: 50.2 t ADT: 100
TR 44
FairOver: SUGAR CREEK OVERFLOW
3 MI SE New Holland, Logan, IL
Built 1984 Load: 50.2 t ADT: 50
FAU-7352 (CH-20)
FairOver: STREAM
1.5 MI W FORSYTH, Macon, IL
Built 2010 Load: 50.2 t ADT: 1,250
IL 111
FairOver: BEAR CREEK
1.2M S JCT IL 108, Macoupin, IL
Built 1929 Load: 50.2 t ADT: 1,000
SAND PRAIRIE ROAD
FairOver: CANTEEN CREEK
1.32 M S ILL 111, Madison, IL
Built 1955 Load: 50.2 t ADT: 1,700
IL 23
FairOver: COON CREEK
0.6 M S I-90 TOLL, McHenry, IL
Built 2011 Load: 50.2 t ADT: 3,250
FAU 6578-AIRPORT R
FairOver: KICK TRIB, Abandoned UPR
SW EDGE PEORIA CL, Peoria, IL
Built 2010 Load: 50.2 t ADT: 9,950
ILL 106
FairOver: BAY CREEK
1.4 MI E PITTSFIELD, Pike, IL
Built 1948 Load: 50.2 t ADT: 1,950
IL 96 / 106
FairOver: MCCRANEY CREEK
1M E IL96/106 SPLIT, Pike, IL
Built 1975 Load: 50.2 t ADT: 2,100
US 54
FairOver: THE SNY
1M SW IL 96, Pike, IL
Built 1975 Load: 50.2 t ADT: 2,500
FAI 255 NB
FairOver: HARDING DITCH north
1.9MI N FAI 64, St. Clair, IL
Built 1985 Load: 50.2 t ADT: 21,750
FAP-877 (ILL-141)
FairOver: BEAR CREEK
.9 MI E US-45 JCT, White, IL
Built 1957 Load: 50.2 t ADT: 3,250
I-88 EB
FairOver: ELKHORN CREEK
5.10 MI W IL 40, Whiteside, IL
Built 1972 Load: 50.2 t ADT: 6,300
I-88 WB
FairOver: ELKHORN CREEK
5.10 MI W IL 40, Whiteside, IL
Built 1972 Load: 50.2 t ADT: 6,300
TR 10A
FairOver: SOUTH DITCH
N OF MINERAL, Bureau, IL
Built 1963 Load: 50.5 t ADT: 10
IL 40 FAP 646
FairOver: COAL CREEK
1.2 MI S OF BUDA, Bureau, IL
Built 1986 Load: 50.5 t ADT: 1,100
FAS 1658(CH26)
FairOver: MOUNTS BRANCH
1 MI SW MORIAH, Clark, IL
Built 1964 Load: 50.5 t ADT: 375
IL 53E FRONTAGE RD
FairOver: SALT CREEK
NORTH OF IL-62, Cook, IL
Built 1962 Load: 50.5 t ADT: 2,500
ST CHARLES RD
FairOver: ADDISON CREEK
0.7 M E US 45, Cook, IL
Built 2002 Load: 50.5 t ADT: 10,400
FAP-116 (ILL-130)
FairOver: NORFOLK SOUTHERN RR
SCL ALBION, Edwards, IL
Built 1934 Load: 50.5 t ADT: 4,200
FAP-328 (US-45)
FairOver: WEST SALT CREEK
2 MI S ILL-37 JCT, Effingham, IL
Built 1989 Load: 50.5 t ADT: 3,900
IL 47 FAP 326
FairOver: JOHNNY RUN
S EDGE OF MAZON, Grundy, IL
Built 2009 Load: 50.5 t ADT: 4,550
FAI 80 EB
FairOver: GENESEO CREEK
0.1 MI W JCT ILL 82, Henry, IL
Built 1961 Load: 50.5 t ADT: 10,300
FAI 80 WB
FairOver: GENESEO CREEK
0.1 MI W JCT ILL 82, Henry, IL
Built 1961 Load: 50.5 t ADT: 10,300
IL 47 & US-30
FairOver: ROB ROY CREEK
2.9 M S OF IL 56, Kane, IL
Built 1989 Load: 50.5 t ADT: 20,200
ILL 1 & 17
FairOver: KKK RIVER S BR.
MOMENCE, Kankakee, IL
Built 1938 Load: 50.5 t ADT: 9,750
IL 1
FairOver: DITCH
08 MI S. OF IL 17, Kankakee, IL
Built 1995 Load: 50.5 t ADT: 4,450
IL 48 (FAS 1536)
FairOver: FRIENDS CREEK
.5 MI NE ARGENTA, Macon, IL
Built 2009 Load: 50.5 t ADT: 1,150
ILL 251
FairOver: SANDY CREEK
2.47 MI S OF ILL 18, Marshall, IL
Built 2009 Load: 50.5 t ADT: 700
IL 173
FairOver: NIPPERSINK CR.
2M W of IL47, McHenry, IL
Built 2011 Load: 50.5 t ADT: 3,200
I-74/WB
FairOver: Norfolk Southern Railway
12.3 MI E OF ILL 117, McLean, IL
Built 1964 Load: 50.5 t ADT: 14,800
I-74/EB
FairOver: Norfolk Southern Railway
12.3 MI E OF ILL 117, McLean, IL
Built 1964 Load: 50.5 t ADT: 14,800
ILL 54
FairOver: STREAM
4.25 M N OF US 136, McLean, IL
Built 1934 Load: 50.5 t ADT: 900
IL 9 & US 150
FairOver: Union Pacific Railroad
1 MI E I55/74, McLean, IL
Built 1996 Load: 50.5 t ADT: 6,100
MS-6743 (BELT AVE)
FairOver: SUGAR CREEK
1.3 MI NW 55 & 9, McLean, IL
Built 1950 Load: 50.5 t ADT: 225
US 67 SB
FairOver: MAUVAISE TERRE
2.5M E CHAPIN, Morgan, IL
Built 2005 Load: 50.5 t ADT: 6,450
ILL 64
FairOver: KILBUCK CREEK
.3 MI E OF I-39, Ogle, IL
Built 1936 Load: 50.5 t ADT: 4,300
ILL 96
FairOver: KCS RR
1MI SE PLEASANT HILL, Pike, IL
Built 1940 Load: 50.5 t ADT: 725
Showing 13,301-13,350 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.