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-88 EB
FairOver: ROCK CREEK
4.5 MI. NE. ERIE, Whiteside, IL
Built 1975 Load: 38.6 t ADT: 6,550
I-88 WB
FairOver: ROCK CREEK
4.5 MI. NE. ERIE, Whiteside, IL
Built 1975 Load: 38.6 t ADT: 6,550
IL 53
FairOver: SUGAR CREEK
0.5 S OF I-80, Will, IL
Built 1992 Load: 38.6 t ADT: 21,600
US 45
FairOver: JACKSON CREEK
2.7 M S OF US 30, Will, IL
Built 2008 Load: 38.6 t ADT: 7,300
West Briarcliff Ro
FairOver: Lily Cache Creek
.75 MI S Boughton Rd, Will, IL
Built 1972 Load: 38.6 t ADT: 2,100
ILL 37
FairOver: CRAB ORCHARD CREEK
SCL MARION, Williamson, IL
Built 1997 Load: 38.6 t ADT: 5,500
ILL 70
FairOver: KENT CREEK
0.1 M W SPRINGFLD RD, Winnebago, IL
Built 2003 Load: 38.6 t ADT: 4,600
IL 336/61 (SB)
FairOver: S FORK BEAR CREEK
.6M SE JCT IL 61 E, Adams, IL
Built 1999 Load: 38.9 t ADT: 5,150
IL 336/61 (NB)
FairOver: S FORK BEAR CREEK
.6M SE JCT IL 61 E, Adams, IL
Built 1999 Load: 38.9 t ADT: 5,150
US 20 BR
FairOver: BEAVER CREEK
2.5 MI W BELVIDERE, Boone, IL
Built 1957 Load: 38.9 t ADT: 13,400
US 20 BR
FairOver: TRIB. OF BEAVER CR.
.1 MI E. WINN. CO LN, Boone, IL
Built 1989 Load: 38.9 t ADT: 13,400
IL 92 FAP 587
FairOver: BUREAU CREEK
1.6 MI. W. US 34, Bureau, IL
Built 1990 Load: 38.9 t ADT: 750
ILL 100
FairOver: SILVER CREEK
1.8 MI N ILL 96, Calhoun, IL
Built 1995 Load: 38.9 t ADT: 500
I-74(WB)
FairOver: SANGAMON RIVER
E OF MAHOMET, Champaign, IL
Built 1967 Load: 38.9 t ADT: 14,400
FAP 800(US 45)
FairOver: SALINE BRANCH DITCH
1.5 MI S THOMASBORO, Champaign, IL
Built 1994 Load: 38.9 t ADT: 8,500
I- 94 BISHOP FORD
FairOver: RR - IHB
6.9 M SE I-57, Cook, IL
Built 1949 Load: 38.9 t ADT: 166,900
IL 72 (HIGGINS RD
FairOver: SALT CREEK
1 M E I-290,IL53, Cook, IL
Built 1900 Load: 38.9 t ADT: 26,600
CERMAK RD
FairOver: S BR CHICAGO RIV
501 W CERMAK, Cook, IL
Built 1906 Load: 38.9 t ADT: 9,100
WESTERN AVE
FairOver: N BR CHICAGO RIVER
3000 N & 2400 W, Cook, IL
Built 1973 Load: 38.9 t ADT: 28,500
TR 24
FairOver: STREAM
7 MI W OF CLINTON, De Witt, IL
Built 1971 Load: 38.9 t ADT: 50
US 36(FAP 323)
FairOver: DRAINAGE DITCH
.25 MI W OF MURDOCK, Douglas, IL
Built 1987 Load: 38.9 t ADT: 2,500
FAU-1485 (DIEHL RD
FairOver: W. BR. DUPAGE RIVER
0.6 MI W WINFIELD RD, DuPage, IL
Built 1990 Load: 38.9 t ADT: 8,100
CASS AV
FairOver: SAWMILL CREEK
0.5 M S OF I-55, DuPage, IL
Built 1991 Load: 38.9 t ADT: 12,500
ILL 115
FairOver: TRIB OF SPRING CREEK
7.76 MI N OF ILL 9, Ford, IL
Built 1987 Load: 38.9 t ADT: 1,050
FAS 1877
FairOver: BIG MUDDY RIVER
YELLOW BANKS ROAD, Franklin, IL
Built 1979 Load: 38.9 t ADT: 1,100
ILL 97
FairOver: TURKEY CREEK
2 MI S OF FAIRVIEW, Fulton, IL
Built 1990 Load: 38.9 t ADT: 1,300
ROBERTS RD - TR 61
FairOver: GALLETT CREEK
SE-19-T8NR1E, Fulton, IL
Built 1998 Load: 38.9 t ADT: 125
US 67
FairOver: APPLE CREEK OVERFLOW
3.52 MI S WHITE HALL, Greene, IL
Built 1972 Load: 38.9 t ADT: 3,650
IL 47 FAP 326
FairOver: IL RIV.& I & M CANAL
APPR.1.23MI S /US 6, Grundy, IL
Built 2003 Load: 38.9 t ADT: 18,100
TR 74
FairOver: TRIB.OF WAUPECON CRK
W4000, S1400, Grundy, IL
Built 1998 Load: 38.9 t ADT: 325
OPHIEM ROAD
FairOver: MUD CREEK
0.2 MI. W. OF US 150, Henry, IL
Built 1990 Load: 38.9 t ADT: 375
FAS 238
FairOver: STREAM
3.5MI SW OF ANNAWAN, Henry, IL
Built 1955 Load: 38.9 t ADT: 250
US 24
FairOver: DRAINAGE DITCH
3.1 MILES E OF US 45, Iroquois, IL
Built 1954 Load: 38.9 t ADT: 3,200
US 24
FairOver: TRIB PRAIRIE CREEK
3.74 MI W OF I-57, Iroquois, IL
Built 1987 Load: 38.9 t ADT: 2,300
ILL 49
FairOver: TRIB OF SHAVEYAIL CR
3.35 MI S OF US 24, Iroquois, IL
Built 1990 Load: 38.9 t ADT: 1,900
TR 250
FairOver: N MARTINTON DITCH 2
1 MI W OF MARTINTON, Iroquois, IL
Built 1981 Load: 38.9 t ADT: 50
FAS-830 (CH-17)
FairOver: AUXIER CREEK
0.9 MI N BELLE RIVE, Jefferson, IL
Built 1986 Load: 38.9 t ADT: 1,600
FAS 746
FairOver: TRIB OF MACOUPIN CRE
1.2 MI W US 267, Jersey, IL
Built 1954 Load: 38.9 t ADT: 350
CANYON ROAD
FairOver: BIRCH CREEK
4 MI. W. OF NORA, Jo Daviess, IL
Built 1994 Load: 38.9 t ADT: 125
IL 115
FairOver: TRIB TO CRANE CREEK
.68 M E BUCKINGHAM, Kankakee, IL
Built 1994 Load: 38.9 t ADT: 1,450
ILL 180
FairOver: SPOON RIVER
1 MI N WILLIAMSFIELD, Knox, IL
Built 1990 Load: 38.9 t ADT: 625
SYLVAN WOODS ROAD
FairOver: TREVOR CREEK
1 MI N OF ANTIOCH, Lake, IL
Built 1993 Load: 38.9 t ADT: 900
TR 334
FairOver: INDIAN CREEK
E 20TH N 3680, LaSalle, IL
Built 1920 Load: 38.9 t ADT: 475
TR 356
FairOver: STREAM
E 2150TH N 2940, LaSalle, IL
Built 1939 Load: 38.9 t ADT: 50
TR 317
FairOver: CRI RR & IM CANAL
N.2755 E.1340, LaSalle, IL
Built 1978 Load: 38.9 t ADT: 600
CH-11
FairOver: BRANCH RACCOON CREEK
5 MI SW BRIDGEPORT, Lawrence, IL
Built 1930 Load: 38.9 t ADT: 150
FAP 561-IL 2 EB
FairOver: DRAINAGE DITCH
E SAUK VAL. COLLEGE, Lee, IL
Built 1991 Load: 38.9 t ADT: 11,500
FAP 786/IL 170
FairOver: BR OF MUD CREEK
4.3 MI S OF ILL 17, Livingston, IL
Built 1990 Load: 38.9 t ADT: 1,300
IL 121
FairOver: NORTH BR LAKE FORK
3.9M E IL54-MT PUL.*, Logan, IL
Built 1931 Load: 38.9 t ADT: 2,850
ILL 10
FairOver: PRAIRIE CREEK
.10 MI E MASON CO LN, Logan, IL
Built 2007 Load: 38.9 t ADT: 1,400
Showing 11,751-11,800 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.