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
CHARLES J MILLER E
FairOver: FOX RIVER
0.1M.W.OF RIVER RD., McHenry, IL
Built 1989 Load: 36.9 t ADT: 8,150
TR 239 B
FairOver: BR OF MACKINAW RIV
3.5 MI S ANCHOR, McLean, IL
Built 1933 Load: 36.9 t ADT: 75
ILL 94
FairOver: CAMP CREEK
5 MI N OF ALEDO, Mercer, IL
Built 1960 Load: 36.9 t ADT: 2,900
ILL 94
FairOver: DUCK CREEK
4 MI N OF LITTLEYORK, Mercer, IL
Built 1989 Load: 36.9 t ADT: 1,250
4TH ST
FairOver: POPE CREEK
IN KEITHSBURG, Mercer, IL
Built 1989 Load: 36.9 t ADT: 800
FAP 770(IL 128)
FairOver: STREAM
.25 MI S DALTON CITY, Moultrie, IL
Built 1992 Load: 36.9 t ADT: 2,000
ILL 8
FairOver: TRIB OF KICKAPOO CR
1 MI E OF EDWARDS, Peoria, IL
Built 1928 Load: 36.9 t ADT: 2,550
TUSCARORA RD-TR 25
FairOver: LA MARSH CREEK
NLINE NW1/4 10T7NR7E, Peoria, IL
Built 1966 Load: 36.9 t ADT: 225
TR 96
FairOver: DODDS BRANCH
.8 MI S WASHINGTON C, Perry, IL
Built 1900 Load: 36.9 t ADT: 10
ILL 48(FAP 760)
FairOver: CREEK
2.8 MI S ILL 10, Piatt, IL
Built 1931 Load: 36.9 t ADT: 1,250
CH 14
FairOver: BLUE CREEK
1.5 MI. N.DETROIT, Pike, IL
Built 1996 Load: 36.9 t ADT: 300
ILL 154
FairOver: KASKASKIA RIVER
2 MI W OF BALDWIN, Randolph, IL
Built 1970 Load: 36.9 t ADT: 3,900
IL 99
FairOver: MISSOURI CR OVERFLOW
.52M N BROWN COUNTY, Schuyler, IL
Built 1986 Load: 36.9 t ADT: 500
FAI 64 EB
FairOver: SILVER CREEK
1.79 MI E OF ILL 158, St. Clair, IL
Built 1971 Load: 36.9 t ADT: 20,950
SKAER RD/ TR 126
FairOver: WEST FORK CREEK
2.2 MI S C.H. 21, St. Clair, IL
Built 1969 Load: 36.9 t ADT: 25
ILL 40
FairOver: SPOON RIVER TRIB.
1.5 MI N OF BRADFORD, Stark, IL
Built 1993 Load: 36.9 t ADT: 1,050
US ROUTE 20 EB
FairOver: BIKE TRAIL
1.75 MI W OF IL 26, Stephenson, IL
Built 1987 Load: 36.9 t ADT: 6,150
US20B WEST BOUND L
FairOver: SILVER CREEK
.5 MI E SPRINGFLD RD, Stephenson, IL
Built 1987 Load: 36.9 t ADT: 6,900
SCIOTO MILLS RD.
FairOver: RICHLAND CREEK
SCIOTO MILLS, Stephenson, IL
Built 1968 Load: 36.9 t ADT: 250
ILL 127 & ILL 146
FairOver: GREEN CR TRIB
0.2 MI E ILL 127, Union, IL
Built 2004 Load: 36.9 t ADT: 5,000
TR 179 A
FairOver: STREAM
7 MI NW DANVILLE, Vermilion, IL
Built 1964 Load: 36.9 t ADT: 50
FAP-825 (ILL-15)
FairOver: GREATHOUSE CREEK
W PART MT CARMEL, Wabash, IL
Built 1975 Load: 36.9 t ADT: 7,650
FAP-328 (US-45)
FairOver: STREAM
1.7 MI S MILL SHOALS, White, IL
Built 1928 Load: 36.9 t ADT: 1,600
FAS-888
FairOver: TRIB LITTLE WABASH
0.5 MI NW HERALD, White, IL
Built 1991 Load: 36.9 t ADT: 325
FREEPORT RD
FairOver: JORDON CREEK
6 MI N STERLING, Whiteside, IL
Built 1953 Load: 36.9 t ADT: 1,800
I- 55 NB
FairOver: RR - EJ&E
0.4 M N OF US 30, Will, IL
Built 1955 Load: 36.9 t ADT: 40,900
IL 53
FairOver: Kankakee River
0.1 M W OF IL 102, Will, IL
Built 1944 Load: 36.9 t ADT: 10,650
FALCONRIDGE WAY
FairOver: LILY CACHE CREEK
1/4 MI S BOUGHTON RD, Will, IL
Built 1965 Load: 36.9 t ADT: 1,800
CENTRAL AVE
FairOver: N FORK KENT CREEK
0.1 MI N AUBURN ST, Winnebago, IL
Built 1966 Load: 36.9 t ADT: 7,800
BURR OAK ROAD
FairOver: UNNAMED CREEK
0.5 MI W CROCKETT RD, Winnebago, IL
Built 1971 Load: 36.9 t ADT: 1,400
PERRYVILLE RD
FairOver: LOVES PARK CREEK
.4 MI N RIVERSIDE BL, Winnebago, IL
Built 1994 Load: 36.9 t ADT: 16,700
FAS 2360 CH 25
FairOver: BLUE CREEK
1.5 MI N GERMANTOWN, Woodford, IL
Built 1988 Load: 36.9 t ADT: 675
CH 48
FairOver: LIERLE CREEK
4.0 MI N LIBERTY, Adams, IL
Built 1959 Load: 37.3 t ADT: 1,300
TR 164
FairOver: BEAR CREEK
3.75 MI W LORAINE, Adams, IL
Built 1985 Load: 37.3 t ADT: 50
TR 97-DAVIE ROAD
FairOver: TRIB TO ROAD RUN CR
2.5 M NW OLIVEBRANCH, Alexander, IL
Built 2001 Load: 37.3 t ADT: 325
TR 374
FairOver: BUREAU CREEK
3 MI. N.E. LAMOILLE, Bureau, IL
Built 1965 Load: 37.3 t ADT: 200
ILL 40
FairOver: JOHNSON CREEK
1.5 MI E OF ILL 78, Carroll, IL
Built 1984 Load: 37.3 t ADT: 800
TR 43
FairOver: PRAIRIE CREEK
2 MI N ARENZVILLE, Cass, IL
Built 1997 Load: 37.3 t ADT: 175
I-74(EB)
FairOver: SANGAMON RIVER
E OF MAHOMET, Champaign, IL
Built 1967 Load: 37.3 t ADT: 14,400
FAP 709 (US 136)
FairOver: OWL CREEK
E EDGE OF FISHER, Champaign, IL
Built 1972 Load: 37.3 t ADT: 2,500
TR 80
FairOver: STREAM
2.8 MI N FISHER, Champaign, IL
Built 1969 Load: 37.3 t ADT: 175
US 51(SB)
FairOver: MAIN DRAIN DITCH
3.2MI S ASSUMPTION, Christian, IL
Built 2002 Load: 37.3 t ADT: 3,600
FAP 328 (US 45)
FairOver: SEMINARY CREEK
3.75 MI S JCT US 50, Clay, IL
Built 2009 Load: 37.3 t ADT: 2,250
IL 177/160
FairOver: QUEEN'S LAKE SLOUGH
1 MI E NEW MEMPHIS, Clinton, IL
Built 1997 Load: 37.3 t ADT: 1,750
US 12,45 MANNHEIM
FairOver: WILLOW CREEK
0.1 M N IL 72, Cook, IL
Built 2003 Load: 37.3 t ADT: 21,400
Shoe Factory Road
FairOver: Poplar Creek
0.2 MILE W. OF IL 72, Cook, IL
Built 1937 Load: 37.3 t ADT: 3,400
TR-237
FairOver: HONEY CREEK
1.5 MI SW NEW HEBRON, Crawford, IL
Built 1977 Load: 37.3 t ADT: 50
CH-2 (BELMONT AVE)
FairOver: ST JOSEPH CR
1 MI S OF US 34, DuPage, IL
Built 1977 Load: 37.3 t ADT: 13,400
IL 53 SB
FairOver: E BR DU PAGE RIVER
0.38 M N OF I-88, DuPage, IL
Built 1958 Load: 37.3 t ADT: 22,700
CH-14 (EOLA RD)
FairOver: BN RAILROAD
.43 MI S N AURORA RD, DuPage, IL
Built 1994 Load: 37.3 t ADT: 27,300
Showing 11,351-11,400 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.