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
IL 130(FAP 820)
FairOver: DEER CREEK
1 MI N OF KEMP, Douglas, IL
Built 1984 Load: 34.3 t ADT: 2,000
IL 83 & FRONT RDS
FairOver: SUGAR CREEK
1 M N OF IL 38, DuPage, IL
Built 1967 Load: 34.3 t ADT: 62,900
DOMOULIN AVE
FairOver: ST.JOSEPH CREEK
600 FT N OF US 34, DuPage, IL
Built 1967 Load: 34.3 t ADT: 75
FAS-1710 (US-40)
FairOver: CSXT RR
2.25 MI W EFFINGHAM, Effingham, IL
Built 1979 Load: 34.3 t ADT: 5,900
FAS-708 (CH-12)
FairOver: LITTLE WABASH RIVER
4 MI E MASON, Effingham, IL
Built 1981 Load: 34.3 t ADT: 500
FAP-322 (US-51)
FairOver: OLD HICKORY CREEK
2.5 MI S US-40, Fayette, IL
Built 1921 Load: 34.3 t ADT: 3,500
ILL 9
FairOver: DRAINAGE DITCH
2.99 MI W OF ILL 115, Ford, IL
Built 1973 Load: 34.3 t ADT: 1,700
CH 8 GALLAHUE
FairOver: STREAM
2800N,1299EN, Ford, IL
Built 1958 Load: 34.3 t ADT: 50
TR 10A DRUMMER
FairOver: W BR DRUMMER CR
200E 600N, Ford, IL
Built 1969 Load: 34.3 t ADT: 75
WARSAW (IL 96) SPU
FairOver: CEDAR GLEN CREEK
.8M W IL96/E WARSAW, Hancock, IL
Built 1930 Load: 34.3 t ADT: 1,150
FAP-849 (ILL-142)
FairOver: CN RR
BELLE RIVE, Jefferson, IL
Built 1934 Load: 34.3 t ADT: 2,850
FAP-726 (ILL-148)
FairOver: STREAM
3.5 MI N FRANKLIN CL, Jefferson, IL
Built 1933 Load: 34.3 t ADT: 2,900
ILL 16
FairOver: DRAINS TO AUTEN DTCH
1.0 M W JCT ILL 100, Jersey, IL
Built 1926 Load: 34.3 t ADT: 2,550
N BROADWAY ROAD
FairOver: W FK OF APPLE RIVER
2 MI S APPLE RIVER, Jo Daviess, IL
Built 1981 Load: 34.3 t ADT: 25
ILL 56
FairOver: LAKE RUN
4 MI NE OF IL 47, Kane, IL
Built 1958 Load: 34.3 t ADT: 14,800
IL 1
FairOver: DITCH
4.4 MI S. OF IL 17, Kankakee, IL
Built 1994 Load: 34.3 t ADT: 4,450
IL 26 (FAP 316)
FairOver: DRAINAGE DITCH
1.5 MI. S. OF US 30, Lee, IL
Built 1991 Load: 34.3 t ADT: 1,850
IL 2
FairOver: DRAINAGE DITCH
E OF DIXON-CEMENT PL, Lee, IL
Built 1993 Load: 34.3 t ADT: 5,800
ILL 47
FairOver: DRAINAGE DITCH
3.24 MI S OF IL 17, Livingston, IL
Built 1997 Load: 34.3 t ADT: 2,200
TR 93
FairOver: SHORT POINT CREEK
550 E, 2250 N, Livingston, IL
Built 1965 Load: 34.3 t ADT: 200
I-55 W FRONTAGE RO
FairOver: CLEAR CREEK
1.7M N ATLANTA INTCH, Logan, IL
Built 1943 Load: 34.3 t ADT: 1,400
TR 251
FairOver: SUGAR CREEK
3 MI E CARLINVILLE, Macoupin, IL
Built 1900 Load: 34.3 t ADT: 50
I-55 SB
FairOver: MCT trail (AbandonedNWRR
2.2 mi N of IL 143, Madison, IL
Built 1955 Load: 34.3 t ADT: 15,050
I-55 NB
FairOver: MCT trail (AbandonedNWRR
1.2 mi N of IL 1432, Madison, IL
Built 1955 Load: 34.3 t ADT: 15,050
IL 140
FairOver: W Fork of Wood River
0.3mi E of IL 3, Madison, IL
Built 1954 Load: 34.3 t ADT: 18,300
IL 140
FairOver: Indian Creek
1.6mi W of IL 159, Madison, IL
Built 1928 Load: 34.3 t ADT: 6,000
ILL 10
FairOver: DITCH
1.0 MI W JCT I29/10, Mason, IL
Built 1927 Load: 34.3 t ADT: 1,200
IL 31
FairOver: RR - UP
ILL 31 & US 14 INTER, McHenry, IL
Built 1971 Load: 34.3 t ADT: 34,400
IL 173
FairOver: MOKELER CREEK
1.5 M E OF US 14, McHenry, IL
Built 1930 Load: 34.3 t ADT: 5,350
TR 128
FairOver: CABINESS CREEK
2.0 MI SW GREENVIEW, Menard, IL
Built 1987 Load: 34.3 t ADT: 50
FAS 573 / CH 1
FairOver: DRAINAGE DITCH
1.25MI E GREENVIEW, Menard, IL
Built 1994 Load: 34.3 t ADT: 450
SBI 132 (OLD IL-12
FairOver: STREAM
S OF DALTON CITY, Moultrie, IL
Built 1984 Load: 34.3 t ADT: 325
TR 172
FairOver: NEUTRAL DITCH
2 MI N OF ARTHUR, Moultrie, IL
Built 1983 Load: 34.3 t ADT: 100
IL 72
FairOver: DRAINAGE DITCH
4.1 MI E JCT ILL 26, Ogle, IL
Built 1929 Load: 34.3 t ADT: 2,150
EB I-74
FairOver: KICKAPOO CREEK
3 MI W OF KICKAPOO, Peoria, IL
Built 1968 Load: 34.3 t ADT: 9,200
WB I-74
FairOver: KICKAPOO CREEK
3 MI W OF KICKAPOO, Peoria, IL
Built 1968 Load: 34.3 t ADT: 9,200
ILL 152
FairOver: BEAUCOUP CREEK
1 MI E OF ILL 13-127, Perry, IL
Built 1927 Load: 34.3 t ADT: 2,300
EAST PARK ST.-CH 7
FairOver: BRANCH TO LTL MUDDY
1 MI W OF FRANKLINCO, Perry, IL
Built 1987 Load: 34.3 t ADT: 900
TR 99
FairOver: WOLF RUN
2.0 MI NE CISCO, Piatt, IL
Built 1980 Load: 34.3 t ADT: 200
I 57 NB & US 51 NB
FairOver: CACHE RIVER
3.8 MI S UNION CO, Pulaski, IL
Built 1964 Load: 34.3 t ADT: 6,900
CH 5
FairOver: CLEAR CR
305N, 1150E, Putnam, IL
Built 1978 Load: 34.3 t ADT: 100
FAP-327 (US-50)
FairOver: CSXT RR.
2 MI E JCT ILL-130, Richland, IL
Built 1963 Load: 34.3 t ADT: 3,450
TR-130
FairOver: TURKEY CREEK
2.25 MI W CALHOUN, Richland, IL
Built 1922 Load: 34.3 t ADT: 25
US RT 67
FairOver: C CHANNEL ROCK RIVER
N EDGE MILAN, Rock Island, IL
Built 1948 Load: 34.3 t ADT: 10,000
US 150
FairOver: COAL CREEK
W. EDGE COAL VALLEY, Rock Island, IL
Built 2005 Load: 34.3 t ADT: 9,250
ANDALUSIA RD
FairOver: SAND CREEK
2 MI W OF US 67, Rock Island, IL
Built 1975 Load: 34.3 t ADT: 6,500
ANDALUSIA RD
FairOver: KYTE CREEK
1 MI W JCT US67, Rock Island, IL
Built 1987 Load: 34.3 t ADT: 10,400
IL5-JOHN DEERE EXW
FairOver: UNNAMED STREAM
.2 MI W 16TH ST MOL., Rock Island, IL
Built 1987 Load: 34.3 t ADT: 26,800
IL-128 (FAP-774)
FairOver: CN RR (ABANDONED)
0.5 MI S OF IL 16, Shelby, IL
Built 1973 Load: 34.3 t ADT: 2,450
FAI 64 WB
FairOver: SILVER CREEK
1.79 MI E OF ILL 158, St. Clair, IL
Built 1971 Load: 34.3 t ADT: 20,950
Showing 10,601-10,650 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.