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
SHERIDAN RD
FairOver: RAVINE NO 3
1.5 M S LAKE CO, Cook, IL
Built 1923 Load: 39.2 t ADT: 2,950
FAP 828
FairOver: SPRING POINT CREEK
.5 MI N EFFHAM LINE, Cumberland, IL
Built 1981 Load: 39.2 t ADT: 2,650
US 51 (SB)(FAP 322
FairOver: SALT CREEK
2 MI S OF CLINTON, De Witt, IL
Built 1960 Load: 39.2 t ADT: 9,450
US 51 (NB)(FAP 322
FairOver: COON CREEK
.5 MI S OF CLINTON, De Witt, IL
Built 1986 Load: 39.2 t ADT: 6,950
TR-116 (JOHNSON RD
FairOver: LEE SLOUGH CREEK
2875N 750E, DeKalb, IL
Built 1955 Load: 39.2 t ADT: 75
LEE ROAD
FairOver: LITTLE ROCK CREEK
1100N 1310E, DeKalb, IL
Built 1977 Load: 39.2 t ADT: 225
FAP-95 (ILL 33)
FairOver: BISHOP CREEK
1 M NW DIETERICH, Effingham, IL
Built 2007 Load: 39.2 t ADT: 6,700
FAP-750 (ILL-185)
FairOver: SANDY RUN CREEK
2 MI E BLUFF CITY, Fayette, IL
Built 1985 Load: 39.2 t ADT: 1,200
FAP-750 (ILL-185)
FairOver: E FK KASKASKIA RV
W I-57 INT, Fayette, IL
Built 1969 Load: 39.2 t ADT: 1,550
FAP-776 (ILL-142)
FairOver: BEAR CREEK
1.8 MI S ILL-14, Hamilton, IL
Built 1928 Load: 39.2 t ADT: 2,550
US 34
FairOver: LONE TREE CREEK
6.5 MI W BIGGSVILLE, Henderson, IL
Built 2002 Load: 39.2 t ADT: 6,050
CH 14 FAS 238
FairOver: ACME DITCH
7 MI SE ATKINSON, Henry, IL
Built 1983 Load: 39.2 t ADT: 250
COUNTY HIGHWAY 8
FairOver: CREEK
NW CORN. VERGENNES, Jackson, IL
Built 1984 Load: 39.2 t ADT: 500
FAS 302 (CH 20)
FairOver: KANKAKEE R
4.46 MI NE BONFIELD, Kankakee, IL
Built 1970 Load: 39.2 t ADT: 5,250
DEERFIELD RD
FairOver: E.SKOKIE DITCH
0.2 M E OF US 41, Lake, IL
Built 1962 Load: 39.2 t ADT: 27,300
FAI-80 EB
FairOver: PECUMSAUGAN CRK
5.3 MI E JCT IL 251, LaSalle, IL
Built 1961 Load: 39.2 t ADT: 15,350
FAI-80 WB
FairOver: PECUMSAUGAN CRK
5.3 MI E OF IL 251, LaSalle, IL
Built 1961 Load: 39.2 t ADT: 15,350
ILL 178
FairOver: CLARK RUN
1.11 MI S OF US 6, LaSalle, IL
Built 1976 Load: 39.2 t ADT: 4,150
US 52 FAP 607
FairOver: UNKNOWN STREAM
1.8 MI W OF IL 71, LaSalle, IL
Built 1931 Load: 39.2 t ADT: 1,850
TR-20-A
FairOver: SPRING CREEK
E 1ST N 3630, LaSalle, IL
Built 1930 Load: 39.2 t ADT: 100
TR 255
FairOver: L VERMILLION R
N 3179TH E 340, LaSalle, IL
Built 1928 Load: 39.2 t ADT: 100
FAS 260 CH 13
FairOver: LITTLE VERMILION RV
E4TH, N4051, LaSalle, IL
Built 1987 Load: 39.2 t ADT: 650
FAS-807
FairOver: BRANCH LITTLE BONPAS
7 MI S SUMNER, Lawrence, IL
Built 1934 Load: 39.2 t ADT: 850
PUMP FACTORY RD
FairOver: MAIN DITCH
2.2 MI SO.STERLINGRD, Lee, IL
Built 1979 Load: 39.2 t ADT: 100
ILL 23
FairOver: WOLF CR
0.67 MI N OF I-55, Livingston, IL
Built 1977 Load: 39.2 t ADT: 3,900
CH 6
FairOver: INDIAN CREEK
2200E,260N., Livingston, IL
Built 1996 Load: 39.2 t ADT: 350
IL 10
FairOver: KICKAPOO CREEK
.6M W I-55, Logan, IL
Built 1999 Load: 39.2 t ADT: 3,100
PRIMM RD
FairOver: Salt Springs
1 MI S LINCOLN, Logan, IL
Built 1928 Load: 39.2 t ADT: 800
TR 44
FairOver: SUGAR CREEK
3 MI E NEW HOLLAND, Logan, IL
Built 1980 Load: 39.2 t ADT: 50
ROSE ROAD/ TR 395
FairOver: TRIB TO SUGAR CK
5.1 MI S HIGHLAND, Madison, IL
Built 1981 Load: 39.2 t ADT: 225
TR-251
FairOver: SKILLET FORK
2 MI SE IUKA, Marion, IL
Built 1993 Load: 39.2 t ADT: 100
TR 218
FairOver: MAIN DITCH
4.5 MI SE FOREST CTY, Mason, IL
Built 1980 Load: 39.2 t ADT: 50
CH-7 (FAS-645)
FairOver: E FORK SHOAL CREEK
NOKOMIS-WENONAH RD, Montgomery, IL
Built 1900 Load: 39.2 t ADT: 1,450
FAS 1382 CAMERON L
FairOver: E BR LAMARSH CR
SE1/4-16-HOLLIS, Peoria, IL
Built 1974 Load: 39.2 t ADT: 2,400
I-72
FairOver: TRIB BAY CREEK
1.0 mi E FAS 601, Pike, IL
Built 1989 Load: 39.2 t ADT: 8,000
TR 206 AGG SURF RO
FairOver: SIXMILE CREEK
2 MI NW PLEASANTHILL, Pike, IL
Built 1981 Load: 39.2 t ADT: 125
TR 386
FairOver: BAY CREEK
6.5 M S TIME, Pike, IL
Built 2004 Load: 39.2 t ADT: 50
TR 60
FairOver: TRIB BRIAR CREEK
2.5 MI NE PULASKI, Pulaski, IL
Built 1991 Load: 39.2 t ADT: 25
IL 26
FairOver: STREAM
0.5 mi n of IL 18, Putnam, IL
Built 1993 Load: 39.2 t ADT: 800
TR 10
FairOver: ROCHER CREEK
TR 10 N PR DU ROCHER, Randolph, IL
Built 1986 Load: 39.2 t ADT: 175
FAI 80
FairOver: STREAM
0.3 MI. S. OF FAI 88, Rock Island, IL
Built 1965 Load: 39.2 t ADT: 24,800
TR 301
FairOver: POND CREEK
1/4 M S STONEFORT, Saline, IL
Built 1982 Load: 39.2 t ADT: 250
IL 99
FairOver: MISSOURI CREEK
1M N BROWN COUNTY, Schuyler, IL
Built 1986 Load: 39.2 t ADT: 375
FAP 325(ILL 16)
FairOver: STREAM
WCL TOWER HILL, Shelby, IL
Built 1924 Load: 39.2 t ADT: 4,800
TR 266 A
FairOver: JORDAN CREEK
4.2 MI SE SHELBYVLLE, Shelby, IL
Built 1909 Load: 39.2 t ADT: 250
FAS 461-CH 16
FairOver: C&IM POWERTON SPUR
1MI SW PEKIN, Tazewell, IL
Built 1977 Load: 39.2 t ADT: 4,550
VALLEY RD - TR 240
FairOver: LITTLE MACKINAW RIVE
NW-14-T23NR3W, Tazewell, IL
Built 1934 Load: 39.2 t ADT: 50
TR-111
FairOver: TRIB WABASH RIVER
1 MI N MT CARMEL, Wabash, IL
Built 1983 Load: 39.2 t ADT: 125
ILL. 164
FairOver: CEDAR CREEK TRIB.
.1MI W of Knox Co Ln, Warren, IL
Built 1991 Load: 39.2 t ADT: 3,150
I 64 WB
FairOver: FRENCH CREEK
1 MI W ILL-1, White, IL
Built 1972 Load: 39.2 t ADT: 6,100
Showing 11,851-11,900 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.