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
FAS 2795
FairOver: HOFFMAN CREEK
0.5 MI N CORRECT CTN, Fayette, IL
Built 1925 Load: 29.2 t ADT: 150
TR 70 PATTON
FairOver: THE BIG FOUR
1900E,100N, Ford, IL
Built 1964 Load: 29.2 t ADT: 275
TR 12D DRUMMER
FairOver: W BR DRUMMER CR
350N 300E, Ford, IL
Built 1975 Load: 29.2 t ADT: 75
ORCHARD RD-TR276
FairOver: LOST GROVE CREEK
CTR-24-T7NR2E, Fulton, IL
Built 1975 Load: 29.2 t ADT: 25
SWELL RD TR 40
FairOver: JOHNNY RUN
.2 MI N RANSOM RD, Grundy, IL
Built 1978 Load: 29.2 t ADT: 75
TR 128
FairOver: CAMP CREEK
2.5 SW COLUSA, Hancock, IL
Built 1974 Load: 29.2 t ADT: 50
TR 198
FairOver: DRAINAGE DITCH
3.5 SE JCT 49&52, Iroquois, IL
Built 1967 Load: 29.2 t ADT: 25
TR 76A
FairOver: TRIB TO PIGEON CR
.2MI N CH 10 ON CH46, Iroquois, IL
Built 1976 Load: 29.2 t ADT: 50
FAS-707
FairOver: MUDDY CREEK
S EDGE WHEELER, Jasper, IL
Built 1963 Load: 29.2 t ADT: 325
CH-29
FairOver: KNOB CREEK
2.5 MI NNW W'VILLE, Jefferson, IL
Built 1909 Load: 29.2 t ADT: 100
TOWNSHIP RD NO 146
FairOver: BR OF APPLE RIVER
2 MI NO OF ELIZABETH, Jo Daviess, IL
Built 1967 Load: 29.2 t ADT: 100
TOWNSHIP RD NO 258
FairOver: DAVIS CREEK
3 MI E PLEASANT VLY, Jo Daviess, IL
Built 1968 Load: 29.2 t ADT: 25
FAS 932 - ILL 147
FairOver: MAX CR
2.4 MI W OF SIMPSON, Johnson, IL
Built 1987 Load: 29.2 t ADT: 650
HIGHLAND AVE
FairOver: FOX RIVER
0.06M.E.OF IL-31, Kane, IL
Built 1940 Load: 29.2 t ADT: 4,300
MAIN STREET
FairOver: WELCH CREEK
0.5 MI W KANEVILLE, Kane, IL
Built 1931 Load: 29.2 t ADT: 1,050
US 6
FairOver: INTERMITTENT STREAM
2.86 MI E OF ILL 71, LaSalle, IL
Built 1958 Load: 29.2 t ADT: 4,050
TR - 77
FairOver: LITTLE INDIAN CREEK
E 2175 N 4340, LaSalle, IL
Built 1968 Load: 29.2 t ADT: 75
CH-11
FairOver: RACCOON CREEK
5.5 MI SW BRIDGEPORT, Lawrence, IL
Built 1968 Load: 29.2 t ADT: 100
CH 15 HARMON RD
FairOver: HOWLAND CREEK
0.3 MI S OF US 30, Lee, IL
Built 1956 Load: 29.2 t ADT: 450
TR 159
FairOver: TURTLE CREEK
1495 E, 1400 N, Livingston, IL
Built 1950 Load: 29.2 t ADT: 150
TR 238
FairOver: DRAINAGE DITCH
2930 N, 2800 E, Livingston, IL
Built 1953 Load: 29.2 t ADT: 10
TR 203(HERITAGE RD
FairOver: WARD BRANCH
SW OF SOUTHSIDE CC, Macon, IL
Built 1980 Load: 29.2 t ADT: 300
FAS 736
FairOver: CAHOKIA CREEK
1.0 MI W STAUNTON, Macoupin, IL
Built 1961 Load: 29.2 t ADT: 900
TR78A-HARRY WEBER
FairOver: NEW COLUMBIA DITCH
1 MI W BIG BAY, Massac, IL
Built 1900 Load: 29.2 t ADT: 25
TR 203
FairOver: TROUBLESOME CREEK
S.CTR-2-T5NR2W, McDonough, IL
Built 1966 Load: 29.2 t ADT: 100
WOODBINE RD
FairOver: KISHWAUKEE RIVER
0.3 MI NW HALIGUS RD, McHenry, IL
Built 1986 Load: 29.2 t ADT: 50
TR 579
FairOver: BR KICKAPOO CR
3.0 MI SW HEYWORTH, McLean, IL
Built 1929 Load: 29.2 t ADT: 50
TR 202
FairOver: DUGOUT RUN
NW-29-T14NR2W, Mercer, IL
Built 1964 Load: 29.2 t ADT: 25
IL 78
FairOver: SNAKE CREEK
3.6M N WALNUT-J"VILL, Morgan, IL
Built 1929 Load: 29.2 t ADT: 2,500
MONTAGUE ROAD
FairOver: MUD CREEK
1.0 MI SE GERMAN VAL, Ogle, IL
Built 1973 Load: 29.2 t ADT: 1,150
FAS-801
FairOver: HURRICANE CREEK
2 MI E WAKEFIELD, Richland, IL
Built 1995 Load: 29.2 t ADT: 500
78TH AVE
FairOver: COAL CREEK
1 MI W COAL VALLEY, Rock Island, IL
Built 1966 Load: 29.2 t ADT: 800
TR 33 (7.5N)
FairOver: WOLF CREEK
2.5 S WILLIAMSVILLE, Sangamon, IL
Built 1969 Load: 29.2 t ADT: 50
FAS 2936 (UNMARKED
FairOver: CROOKED CREEK
3 MI S OF DONGOLA, Union, IL
Built 1985 Load: 29.2 t ADT: 1,250
TR 185
FairOver: DUTCH CREEK
2.7M SW ILL 146, Union, IL
Built 1964 Load: 29.2 t ADT: 75
FAS 331 (CH 10)
FairOver: STREAM
IN OAKWOOD, Vermilion, IL
Built 1973 Load: 29.2 t ADT: 3,050
SUGAR CREEK DR.
FairOver: SUGAR CREEK
0.2 MI SW US52, Will, IL
Built 1989 Load: 29.2 t ADT: 1,050
ILL 148
FairOver: MIDDLE WOLF CREEK
2.3 MI N OF I-57, Williamson, IL
Built 1962 Load: 29.2 t ADT: 5,600
ROCK GROVE RD
FairOver: RANDALLS CREEK
0.2 M W EICKS RD, Winnebago, IL
Built 1982 Load: 29.2 t ADT: 475
18TH ST
FairOver: KEITH CREEK
ROCKFORD, Winnebago, IL
Built 1999 Load: 29.2 t ADT: 1,500
CH 8/FAS 782
FairOver: GILHAM CREEK
4M N MULBERRY GROVE, Bond, IL
Built 1954 Load: 29.5 t ADT: 675
TR 60
FairOver: BR OF LOCUST FORK
1.75M S PIERRON, Bond, IL
Built 1987 Load: 29.5 t ADT: 100
PINE STREET
FairOver: HICKORY CREEK
E CENTER OF MANLIUS, Bureau, IL
Built 1940 Load: 29.5 t ADT: 75
FAS 518 (CH 22)
FairOver: STREAM
3.5 MI S OF ROYAL, Champaign, IL
Built 1963 Load: 29.5 t ADT: 775
TR 22
FairOver: KANKAKEE DRAIN DITCH
4.8 MI N IVESDALE, Champaign, IL
Built 1975 Load: 29.5 t ADT: 100
TR 238
FairOver: STREAM
3.3 MI S MAYVIEW, Champaign, IL
Built 1974 Load: 29.5 t ADT: 75
GRIGGS ST
FairOver: BONEYARD CREEK
URBANA, Champaign, IL
Built 1900 Load: 29.5 t ADT: 300
IL 390 WB EOH
FairOver: RR - CP SPUR
0.5 M W ROSELLE RD, Cook, IL
Built 1992 Load: 29.5 t ADT: 54,300
IL 390 EB EOH
FairOver: RR - SPUR
0.5 M W ROSELLE RD, Cook, IL
Built 1992 Load: 29.5 t ADT: 54,300
IL 390 WB EOH
FairOver: RR - METRA, WETLANDS
.8 M E OF US 20, Cook, IL
Built 1993 Load: 29.5 t ADT: 25,700
Showing 6,551-6,600 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.