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
TR-14
FairOver: HURRICANE CREEK
2.8 MI. NW HILLVIEW, Greene, IL
Built 1990 Load: 32.4 t ADT: 25
TR 118
FairOver: HURRICANE CREEK
2.5 MI W ROODHOUSE, Greene, IL
Built 1983 Load: 32.4 t ADT: 75
CH 17
FairOver: COLE CREEK
4.7M W OLDKANE, Greene, IL
Built 1981 Load: 32.4 t ADT: 75
TR-192
FairOver: LITTLE BEAR CREEK
4.9 MI SE CARROLLTON, Greene, IL
Built 1984 Load: 32.4 t ADT: 50
TR-293
FairOver: STREAM
6.1 MI SE ELDRED, Greene, IL
Built 1984 Load: 32.4 t ADT: 50
TR-267A
FairOver: STREAM
2.6 MI NW KANE, Greene, IL
Built 1983 Load: 32.4 t ADT: 75
TR 244
FairOver: MARK S CREEK
5 MI NE ROODHOUSE, Greene, IL
Built 1986 Load: 32.4 t ADT: 25
TR-95
FairOver: LICK CREEK
1.2 MI SE ATHENSVLLE, Greene, IL
Built 1984 Load: 32.4 t ADT: 25
TR-251
FairOver: BRANCH TAYLOR CR
2.1 MI NW ROCKBRIDGE, Greene, IL
Built 1983 Load: 32.4 t ADT: 50
FAS 738 CH 10
FairOver: SEMINARY CREEK
1.0 M W WHITE HALL, Greene, IL
Built 1985 Load: 32.4 t ADT: 950
MSS 6050/MAIN ST
FairOver: HURRICANE CREEK
VILLAGE OF HILLVIEW, Greene, IL
Built 1991 Load: 32.4 t ADT: 150
TR 301
FairOver: TRIBUTARY WINES BRA
3.0 MI W OLD KANE, Greene, IL
Built 1992 Load: 32.4 t ADT: 100
TR 288
FairOver: LICK CREEK
7 MILES E. ROODHOUSE, Greene, IL
Built 1994 Load: 32.4 t ADT: 25
TR 314
FairOver: TAYLOR CREEK
1.5MI W. OF FAYETTE, Greene, IL
Built 1996 Load: 32.4 t ADT: 50
TR 17
FairOver: LICK CREEK
1/2 MI W. OF RT.267, Greene, IL
Built 1998 Load: 32.4 t ADT: 50
TR 120
FairOver: HURRICANE CREEK
3 MI W ROODHOUSE, Greene, IL
Built 2000 Load: 32.4 t ADT: 25
FAS 731/CH 2
FairOver: MARKS CREEK
2550N;1950E, Greene, IL
Built 2003 Load: 32.4 t ADT: 500
CH 9
FairOver: WOLF RUN CREEK
2225N;1425E, Greene, IL
Built 2005 Load: 32.4 t ADT: 175
TR 47A
FairOver: UNNAMED STREAM
2475N;2300E, Greene, IL
Built 2005 Load: 32.4 t ADT: 50
TR 98 A
FairOver: HURRICANE CREEK
2500N;900E, Greene, IL
Built 2006 Load: 32.4 t ADT: 100
TR 78
FairOver: W FORK OF NETTLE CRK
.8 MI S OF NELSON RD, Grundy, IL
Built 1996 Load: 32.4 t ADT: 175
TR-3B MINOOKA RD
FairOver: TRIB TO AUX SABLE CR
.38 MI W BRISBIN RD, Grundy, IL
Built 1976 Load: 32.4 t ADT: 550
TR 71 SHABBONA RD
FairOver: TRIB TO BILLS RUN
.24 MI E SOUTHMOR RD, Grundy, IL
Built 1996 Load: 32.4 t ADT: 75
TR 89A/Indian Trai
FairOver: ARMSTRONG RUN
1.5 MI E OF ILL 170, Grundy, IL
Built 2006 Load: 32.4 t ADT: 75
MCARDLE RD-TR91A
FairOver: MAZON RIVER
3.3MI CBN HL TR91A, Grundy, IL
Built 1994 Load: 32.4 t ADT: 200
TR 180A Walleye Ro
FairOver: inlet off Goose Lake
0.14 MI N PEART RD., Grundy, IL
Built 2000 Load: 32.4 t ADT: 50
TR 91A MCARDLE RD
FairOver: TRIB TO CLAYPOOL D D
.35 MI E GUGTOWN RD, Grundy, IL
Built 1988 Load: 32.4 t ADT: 375
TR 20 JOHNNY RUN R
FairOver: WAUPECON CREEK
.3 MI S PRAIRIE RD, Grundy, IL
Built 1983 Load: 32.4 t ADT: 75
TR 1E LIV.CO.
FairOver: JOHNNY RUN
.13 MI W KINSMAN RD, Grundy, IL
Built 1999 Load: 32.4 t ADT: 25
TR 72 VERONA RD
FairOver: TRIB W FORK MAZON RV
SEC26 T31N R6E 3RD, Grundy, IL
Built 1998 Load: 32.4 t ADT: 275
DWIGHT RD TR-110
FairOver: WEST FK MAZON RIVER
.09 MI S GARDNER RD, Grundy, IL
Built 1977 Load: 32.4 t ADT: 150
HOWLAND RD/MS 2020
FairOver: TRIB E FK MAZON RIV
.75 MI E GORMAN ROAD, Grundy, IL
Built 1983 Load: 32.4 t ADT: 50
CREEK DR./MS 1115
FairOver: E FORK NETTLE CREEK
.03M S OF THOMAS DR., Grundy, IL
Built 2000 Load: 32.4 t ADT: 1,350
FAP-849 (ILL-142)
FairOver: STREAM
6.9 MI SE JEFF CO LN, Hamilton, IL
Built 1929 Load: 32.4 t ADT: 2,700
TR-301
FairOver: WHEELER CREEK
3 MI SW DOLAN LAKE, Hamilton, IL
Built 1977 Load: 32.4 t ADT: 50
TR-369
FairOver: WHEELER CREEK
3.3 MI E DALE, Hamilton, IL
Built 1983 Load: 32.4 t ADT: 25
TR-176
FairOver: BIG CREEK
0.5 MI NE DELAFIELD, Hamilton, IL
Built 1982 Load: 32.4 t ADT: 100
IL 9
FairOver: DRAINAGE DITCH
0.13 S IL 96, Hancock, IL
Built 1982 Load: 32.4 t ADT: 1,725
CO HWY 5
FairOver: CEDAR CREEK
2.5 SE OF F. GREEN, Hancock, IL
Built 1981 Load: 32.4 t ADT: 75
CO HWY 17
FairOver: LA MOINE RIVER
6.0 E CARTHAGE, Hancock, IL
Built 1998 Load: 32.4 t ADT: 250
FAS 1425
FairOver: LONG CREEK
1 MI W OF FERRIS, Hancock, IL
Built 1988 Load: 32.4 t ADT: 20
CO HWY 32
FairOver: CEDAR GLEN CREEK
0.43 MI E OF WARSAW, Hancock, IL
Built 1960 Load: 32.4 t ADT: 1,600
TR 385A
FairOver: FLOUR CREEK
1.8 MI N OF AUGUSTA, Hancock, IL
Built 1982 Load: 32.4 t ADT: 125
TR 158
FairOver: BIG MEADOW DITCH
3.0 MI S CARTHAGE, Hancock, IL
Built 1980 Load: 32.4 t ADT: 75
TR 176
FairOver: LONG CREEK
1 MI N OF CARTHAGE, Hancock, IL
Built 1982 Load: 32.4 t ADT: 125
TR 170
FairOver: SLATER CREEK
2.0 MI SW DENVER, Hancock, IL
Built 1982 Load: 32.4 t ADT: 50
TR 389
FairOver: SLATTER CREEK
1.5 MI. N.W. BOWEN, Hancock, IL
Built 1989 Load: 32.4 t ADT: 25
TR 342
FairOver: ROCK CREEK
2.0 N FOUNTAIN GREEN, Hancock, IL
Built 1981 Load: 32.4 t ADT: 100
TR 396
FairOver: ROCK CREEK
1.5 NE FOUNTAINGREEN, Hancock, IL
Built 1982 Load: 32.4 t ADT: 50
TR 302
FairOver: CEDAR CREEK
2.5 MI SW FOUNTAINGR, Hancock, IL
Built 1979 Load: 32.4 t ADT: 50
Showing 8,051-8,100 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.