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
TR44
FairOver: BRANCH OF ELKHORN CR
2 MI NE LIVELY GROVE, Washington, IL
Built 1981 Load: 32.4 t ADT: 25
TR 225
FairOver: ELKHORN CREEK
4 MI E LIVELY GROVE, Washington, IL
Built 1982 Load: 32.4 t ADT: 75
TR 253
FairOver: LOCUST CREEK
NW 1/4 SEC19 T3S R2W, Washington, IL
Built 1983 Load: 32.4 t ADT: 75
TR 159
FairOver: LITTLE MUD CREEK
4MI NW LIVELY GROVE, Washington, IL
Built 1983 Load: 32.4 t ADT: 75
TR 237 A
FairOver: MUD CREEK
SW 1/4 SEC30 T3S R4W, Washington, IL
Built 1983 Load: 32.4 t ADT: 50
TR 211
FairOver: BEAUCOUP CREEK
SW 1/4 SEC 35 T2SR2W, Washington, IL
Built 1985 Load: 32.4 t ADT: 175
TR114 014/TR130 09
FairOver: KASKASKIA RIVER
2.5 MI N COVINGTON, Washington, IL
Built 1985 Load: 32.4 t ADT: 650
FAS 833
FairOver: ELKHORN CREEK
0.5 MI NORTH VENEDY, Washington, IL
Built 1985 Load: 32.4 t ADT: 625
FAS 788
FairOver: BRANCH OF MIDDLE CK
NE 1/4 SEC 11 T2S R2, Washington, IL
Built 1985 Load: 32.4 t ADT: 300
TR 70A
FairOver: WEAVER CREEK
NE 1/4 SEC17 T25 R4W, Washington, IL
Built 1986 Load: 32.4 t ADT: 200
TR 15
FairOver: BR OF GRAND POINT CK
1 MI SE OFNOLTING, Washington, IL
Built 1987 Load: 32.4 t ADT: 25
CH 1
FairOver: BROF BEAVER POND CK
NE 1/4 SEC 5 TZS R3W, Washington, IL
Built 1987 Load: 32.4 t ADT: 350
CH 12
FairOver: MUD CREEK
SW 1/4 SEC 16 T35R5W, Washington, IL
Built 1988 Load: 32.4 t ADT: 800
CH 18
FairOver: SEWER CREEK
0.7 MI N OF NOLTINGS, Washington, IL
Built 1992 Load: 32.4 t ADT: 550
TR 2
FairOver: BR. OF MUD CREEK
5 NILE N OF TILDEN, Washington, IL
Built 1994 Load: 32.4 t ADT: 175
FAS 836
FairOver: PUNCHEON CK
2.75 MI EAST DUBOIS, Washington, IL
Built 1989 Load: 32.4 t ADT: 550
TR 111
FairOver: GRAND POINT CREEK
3 MI. NW RICHVIEW, Washington, IL
Built 1990 Load: 32.4 t ADT: 50
CH 7
FairOver: HICKORY CREEK
2.25 MI E POSON, Washington, IL
Built 1991 Load: 32.4 t ADT: 100
TR 225
FairOver: ELKHORN CREEK
1 MI SW CORDES, Washington, IL
Built 1993 Load: 32.4 t ADT: 50
TR 244
FairOver: BR OF LITTLE MUDDY
0.5M S OF RADOM, Washington, IL
Built 1995 Load: 32.4 t ADT: 150
TR 70A
FairOver: ELKHORN CREEK
1.75 MI N OF ELKTON, Washington, IL
Built 1997 Load: 32.4 t ADT: 50
FAS 788
FairOver: CROOKED CREEK
4 MI N HOYLETON, Washington, IL
Built 2006 Load: 32.4 t ADT: 1,200
TR 197
FairOver: LITTLE MUDDY RIVER
0.75 MI SW ASHLEY, Washington, IL
Built 2007 Load: 32.4 t ADT: 25
TR 205
FairOver: LOCUST CREEK
2.75 MI SW NASHVILLE, Washington, IL
Built 2006 Load: 32.4 t ADT: 10
TR 250
FairOver: WEBSTER CREEK
1M WEST OF WAMAC, Washington, IL
Built 2008 Load: 32.4 t ADT: 75
FAP-821 (ILL-15)
FairOver: STREAM
SW FAIRFIELD AIRPORT, Wayne, IL
Built 1956 Load: 32.4 t ADT: 3,600
SBI-15 (OLD RT. 15
FairOver: STREAM
N OF WAYNE CITY, Wayne, IL
Built 2007 Load: 32.4 t ADT: 200
TR-249
FairOver: DRAINAGE DITCH
2.5 MI SE MT ERIE, Wayne, IL
Built 1967 Load: 32.4 t ADT: 25
TR-370
FairOver: EAGLE SLOUGH
4 MI NW MILL SHOALS, Wayne, IL
Built 1963 Load: 32.4 t ADT: 50
FAS-2816
FairOver: BRANCH LITTLE WABASH
1.2 MI E GOLDEN GATE, Wayne, IL
Built 2002 Load: 32.4 t ADT: 50
TR-482
FairOver: DRAINAGE DITCH
3 MI SE FAIRFIELD, Wayne, IL
Built 1978 Load: 32.4 t ADT: 75
TR-51
FairOver: ELM RIVER
5 MI NE CISNE, Wayne, IL
Built 1979 Load: 32.4 t ADT: 35
FAS 2810
FairOver: BRUSH CREEK
2 MI SE ORCHARDVILLE, Wayne, IL
Built 1981 Load: 32.4 t ADT: 150
TR-229
FairOver: EMMONS CREEK
SW MT ERIE, Wayne, IL
Built 1981 Load: 32.4 t ADT: 75
TR-419
FairOver: DRY FORK CREEK
2 MI NNE SIMS, Wayne, IL
Built 1981 Load: 32.4 t ADT: 50
TR-392
FairOver: EAGLE SLOUGH TRIB
2.5 MI S FAIRFIELD, Wayne, IL
Built 1982 Load: 32.4 t ADT: 150
TR-515
FairOver: DRY FORK
1 MI E SIMS, Wayne, IL
Built 1982 Load: 32.4 t ADT: 75
CH-18
FairOver: BRUSH CREEK
NW SAM DALE LAKE, Wayne, IL
Built 1982 Load: 32.4 t ADT: 125
TR-290
FairOver: JOHNSON CREEK
SE JOHNSONVILLE, Wayne, IL
Built 1982 Load: 32.4 t ADT: 100
TR-268
FairOver: WILLOW BRANCH CREEK
4 MI N JOHNSONVILLE, Wayne, IL
Built 1983 Load: 32.4 t ADT: 50
TR-237A
FairOver: DRY FORK CREEK
2.5 MI SW CISNE, Wayne, IL
Built 1984 Load: 32.4 t ADT: 35
TR-78
FairOver: HORSE CREEK
2.25 MI NNW KEENES, Wayne, IL
Built 1984 Load: 32.4 t ADT: 50
TR-29
FairOver: WILLOW BRANCH CREEK
2 MI NW RINARD, Wayne, IL
Built 1986 Load: 32.4 t ADT: 75
TR-416
FairOver: DEER CREEK
3 MI SE CISNE, Wayne, IL
Built 1985 Load: 32.4 t ADT: 35
TR-482
FairOver: POND CREEK
2.5 MI SE FAIRFIELD, Wayne, IL
Built 1985 Load: 32.4 t ADT: 50
FAS-2816 (CH-19)
FairOver: GUM ROAD DITCH
6 MI S GOLDEN GATE, Wayne, IL
Built 1986 Load: 32.4 t ADT: 50
FAS-2821
FairOver: ELM RIVER DR DITCH
4.75 MI SW MT ERIE, Wayne, IL
Built 1987 Load: 32.4 t ADT: 35
TR-448
FairOver: BOYD CREEK
2 MI N MILL SHOALS, Wayne, IL
Built 1989 Load: 32.4 t ADT: 100
FAS 2810
FairOver: TRIB SKILLET FORK
2.5 MI SE ORCHARDVIL, Wayne, IL
Built 1990 Load: 32.4 t ADT: 100
TR-537
FairOver: DRAINAGE DITCH
2.5 MI SW FAIRFIELD, Wayne, IL
Built 1990 Load: 32.4 t ADT: 75
Showing 9,851-9,900 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.