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
IL 26/FAS 2370
FairOver: CLEAR CREEK (OVRFLW)
8.20 MI S OF IL 71, Putnam, IL
Built 2001 Load: 37.6 t ADT: 800
FAS 863
FairOver: MILL CREEK
863 OVER MILL CREEK, Randolph, IL
Built 1960 Load: 37.6 t ADT: 225
AIRPORT ROAD
FairOver: MILL CREEK
0.5 MI. E. US 67, Rock Island, IL
Built 2003 Load: 37.6 t ADT: 10,100
FAS 624A (CH 40)
FairOver: BRANCH HORSE CREEK
.19 mi W TR 424, Sangamon, IL
Built 1957 Load: 37.6 t ADT: 900
TR 231
FairOver: HORNEY BRANCH
3.0 W OF RUSHVILLE, Schuyler, IL
Built 1916 Load: 37.6 t ADT: 150
FAP 316-IL 26
FairOver: BRUSH CREEK
1.7 MI S ORANGEVILLE, Stephenson, IL
Built 1991 Load: 37.6 t ADT: 4,600
ILL 73
FairOver: CEDAR CREEK
S EDGE OF WINSLOW, Stephenson, IL
Built 1990 Load: 37.6 t ADT: 1,250
FAS 509(CH 23)
FairOver: FAYETTE CREEK
2 MI NE INDIANOLA, Vermilion, IL
Built 1975 Load: 37.6 t ADT: 900
FAI-64 EB
FairOver: SKILLET FORK
7 MI E ILL-242 INT, Wayne, IL
Built 1974 Load: 37.6 t ADT: 5,500
I 64 EB
FairOver: TRIB RANDOLPH DITCH
11.5 MI W ILL-1, White, IL
Built 1972 Load: 37.6 t ADT: 6,100
I 64 WB
FairOver: TRIB RANDOLPH DITCH
11.5 MI W ILL-1, White, IL
Built 1972 Load: 37.6 t ADT: 6,100
ROCKTON RD
FairOver: ROCKTN DAM MILL RACE
W. EDGE OF ROCKTON, Winnebago, IL
Built 1990 Load: 37.6 t ADT: 2,200
SWANSON RD
FairOver: UNNAMED STREAM
1.2 MI. E. IL 251, Winnebago, IL
Built 1977 Load: 37.6 t ADT: 3,450
CH 11
FairOver: LIERLE BRANCH
4.6 MI N OF LIBERTY, Adams, IL
Built 1983 Load: 37.9 t ADT: 675
TR 93
FairOver: PIGEON ROOST CREEK
1.5M NW OLIVE BRANCH, Alexander, IL
Built 1991 Load: 37.9 t ADT: 225
TR 98
FairOver: LAKE CREEK
5 MI S OLIVE BRANCH, Alexander, IL
Built 1996 Load: 37.9 t ADT: 25
FAS 1246/CH 24
FairOver: BIG BUREAU CREEK
1 MI NW TISKILWA, Bureau, IL
Built 1989 Load: 37.9 t ADT: 250
ILL 84
FairOver: DRAINAGE DITCH
2 MI N SAVANNA, Carroll, IL
Built 1929 Load: 37.9 t ADT: 1,500
ILL 73
FairOver: STRADDLE CREEK
0.2 MI N OF LANARK, Carroll, IL
Built 1989 Load: 37.9 t ADT: 3,350
US 45(FAP 800)
FairOver: DITCH
S EDGE THOMASBORO, Champaign, IL
Built 1955 Load: 37.9 t ADT: 8,500
FOX DR(MS 8558)
FairOver: DRAINAGE DITCH
0.15 MI N of Windsor, Champaign, IL
Built 1997 Load: 37.9 t ADT: 1,250
FAS 668(CH 2)
FairOver: DRY BRANCH
E OF BUSHTON, Coles, IL
Built 1933 Load: 37.9 t ADT: 300
IL 121 (FAP 320)
FairOver: WHITLEY CREEK
1.5 MI SE COLES, Coles, IL
Built 1978 Load: 37.9 t ADT: 4,100
I- 57
FairOver: BUTTERFIELD CREEK
0.04 M N of V Common, Cook, IL
Built 1967 Load: 37.9 t ADT: 79,300
IL 171 NB ELEVATED
FairOver: STA 53&15 TO 63&18
0.5 M SE JOLIET RD, Cook, IL
Built 1964 Load: 37.9 t ADT: 40,100
PULASKI RD SB
FairOver: RR - BRC
0.2 M S 71ST ST, Cook, IL
Built 1988 Load: 37.9 t ADT: 31,000
RIDGELAND AVE
FairOver: BUTTERFIELD CREEK
0.25 M N US 30 P21, Cook, IL
Built 1957 Load: 37.9 t ADT: 6,750
S LAKE SHORE DRIVE
FairOver: JACKSON PK LAGOON IN
5900 S & 1900 E, Cook, IL
Built 1891 Load: 37.9 t ADT: 36,700
IL 72 FAP 553
FairOver: LEE SLOUGH
1.5 MI W KINGSTON, DeKalb, IL
Built 1987 Load: 37.9 t ADT: 2,300
IL 72 FAP 553
FairOver: DRAINAGE DITCH
3 MI NW OF KIRKLAND, DeKalb, IL
Built 1990 Load: 37.9 t ADT: 2,150
US 34
FairOver: W BR DUPAGE RIVER
5.3 M W OF IL 53, DuPage, IL
Built 1933 Load: 37.9 t ADT: 27,500
US 150(FAP 91)
FairOver: SUGAR CREEK
1.0 MI E OF PARIS, Edgar, IL
Built 1966 Load: 37.9 t ADT: 3,250
FAI-70 EB
FairOver: HURRICANE CK OVFL 2
2.7 MI E BOND CO LN, Fayette, IL
Built 1965 Load: 37.9 t ADT: 12,900
FAI-70 WB
FairOver: HURRICANE CK OVFL 2
2.7 MI E BOND CO LN, Fayette, IL
Built 1965 Load: 37.9 t ADT: 12,900
FAP-752 (US-40)
FairOver: CAMP CREEK OVERFLOW
1.4 MI E US-51, Fayette, IL
Built 1988 Load: 37.9 t ADT: 3,950
ILL 9
FairOver: DRAINAGE DITCH
.91 M E OF ELLIOT RD, Ford, IL
Built 1987 Load: 37.9 t ADT: 1,700
US 24
FairOver: N F VERMILION
0.47 MI E ILL 115, Ford, IL
Built 1987 Load: 37.9 t ADT: 2,200
ILL 9
FairOver: PUTT CREEK
4 MI W OF CANTON, Fulton, IL
Built 1987 Load: 37.9 t ADT: 2,250
Hillview Eldred Rd
FairOver: HURRICANE CREEK
0.2 M S JCT 108, Greene, IL
Built 1946 Load: 37.9 t ADT: 625
GORMAN RD CH 10
FairOver: MAZON RIVER
0.04 MI N TR 109B, Grundy, IL
Built 1987 Load: 37.9 t ADT: 300
FAP-776 (ILL-142)
FairOver: BR LAKEY CREEK
3.7 MI S ILL-14, Hamilton, IL
Built 1984 Load: 37.9 t ADT: 2,400
ILL 1/FAP 332A
FairOver: SUGAR CREEK
2.73 M S OF US 24, Iroquois, IL
Built 1992 Load: 37.9 t ADT: 2,300
TR-77
FairOver: CROOKED CREEK
1.2 MI WSW YALE, Jasper, IL
Built 1909 Load: 37.9 t ADT: 25
FAP-849 (ILL-142)
FairOver: CASEY FORK
.9 MI S MT VERNON, Jefferson, IL
Built 1930 Load: 37.9 t ADT: 4,900
I 64 WB
FairOver: CASEY FORK OVERFLOW
.6 MI E ILL-37 INT, Jefferson, IL
Built 1972 Load: 37.9 t ADT: 6,350
I 64 EB
FairOver: CASEY FORK OVERFLOW
.6 MI E ILL-37 INT, Jefferson, IL
Built 1972 Load: 37.9 t ADT: 6,350
FAS-789 (CH-3)
FairOver: PUNCHEON CREEK
2 MI S HARMONY, Jefferson, IL
Built 1984 Load: 37.9 t ADT: 1,000
FAS-819 (CH-16)
FairOver: HORSE CREEK
2.5 MI N HARMONY, Jefferson, IL
Built 1994 Load: 37.9 t ADT: 500
ILL 114
FairOver: PIKE CREEK
1.7 M E OF ILL 1&17, Kankakee, IL
Built 2004 Load: 37.9 t ADT: 2,800
US 52
FairOver: LISBON CREEK
1.09 MI W ILL 47, Kendall, IL
Built 1936 Load: 37.9 t ADT: 1,150
Showing 11,501-11,550 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.