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
BIG MOUND RD.
FairOver: BR. KILBUCK CR.
2.5 N.W. LINDENWOOD, Ogle, IL
Built 1958 Load: 20.4 t ADT: 500
TR 488 11.5E
FairOver: BUCKHART CREEK
2.0 S OF BUCKHART, Sangamon, IL
Built 1960 Load: 20.4 t ADT: 75
TR 127
FairOver: ANGLE BRANCH
4.0 MI N TOWER HILL, Shelby, IL
Built 1909 Load: 20.4 t ADT: 25
BUNKUM RD/ FAU 916
FairOver: DITCH
0.25MI W ILL 157, St. Clair, IL
Built 1960 Load: 20.4 t ADT: 4,050
FAS 376-CH 7
FairOver: INDIAN CREEK
NE-20-T12NR6E, Stark, IL
Built 1954 Load: 20.4 t ADT: 350
700E (TR 52)
FairOver: TRIB OF INDIAN CREEK
700E, 150N, Stark, IL
Built 1900 Load: 20.4 t ADT: 25
E. BRICK SCHOOL RO
FairOver: BR OF WINNESHIEK CRE
0.5 MI E ILL RT 75, Stephenson, IL
Built 1959 Load: 20.4 t ADT: 75
FRANKLIN RD - TR 1
FairOver: DILLON CREEK
NE-23-T24NR4W, Tazewell, IL
Built 1958 Load: 20.4 t ADT: 550
RED SHALE HILL-TR1
FairOver: LOST CREEK
SW-29-T24NR4W, Tazewell, IL
Built 1957 Load: 20.4 t ADT: 150
STRINGTOWN RD-TR22
FairOver: SUGAR CREEK
SW-23-T23NR2W, Tazewell, IL
Built 1960 Load: 20.4 t ADT: 550
ARMINGTON RD-TR 29
FairOver: STREAM
S-23-T22NR2W, Tazewell, IL
Built 1962 Load: 20.4 t ADT: 125
TR 149
FairOver: LITTLE MACKINAW R
NE-34-T24NR2W, Tazewell, IL
Built 1971 Load: 20.4 t ADT: 75
TR 107
FairOver: STREAM
2 MI SW ARMSTRONG, Vermilion, IL
Built 1968 Load: 20.4 t ADT: 50
TR 18
FairOver: SO HEND CR
NE-30-T10NR3W, Warren, IL
Built 1973 Load: 20.4 t ADT: 25
SPRINGFIELD AVE
FairOver: DRAINAGE DITCH
.4 MI. N. AUBURN ST., Winnebago, IL
Built 1960 Load: 20.4 t ADT: 7,600
EDDIE ROAD
FairOver: BR PECATONICA RIVER
AT FISH HATCHERY RD, Winnebago, IL
Built 1936 Load: 20.4 t ADT: 75
LOVE ROAD
FairOver: DRY RUN CREEK
0.5 MI S ROCKTON RD, Winnebago, IL
Built 1960 Load: 20.4 t ADT: 1,700
TR 178
FairOver: COTTONWOOD BRANCH
3 SW OF OWANECO, Christian, IL
Built 1950 Load: 20.7 t ADT: 20
TR 107
FairOver: SPRING BRANCH
4MI N TAYLORVILLE, Christian, IL
Built 1900 Load: 20.7 t ADT: 50
TR 262
FairOver: LITTLE CREEK
2 MI W WALNUT PRAIRI, Clark, IL
Built 1947 Load: 20.7 t ADT: 50
HICKS RD
FairOver: BUFFALO CREEK TRIB
.82 S OF LAKE COOK R, Cook, IL
Built 1932 Load: 20.7 t ADT: 16,600
HARRISON ST
FairOver: S BR CHICAGO RIVER
600 S & 322 W, Cook, IL
Built 1960 Load: 20.7 t ADT: 2,550
TR 49
FairOver: HACKETT BRANCH
3.3 MI NE OF TUSCOLA, Douglas, IL
Built 1956 Load: 20.7 t ADT: 225
TR 125
FairOver: STREAM
1 MI SE OF KIDLEY, Edgar, IL
Built 1963 Load: 20.7 t ADT: 50
TR 753
FairOver: BRANCH SPOON RIVER
W1/2-9-T4NR3E, Fulton, IL
Built 1949 Load: 20.7 t ADT: 50
S. DERINDA ROAD
FairOver: LITTLE RUSH CREEK
4 M SE ELIZABETH, Jo Daviess, IL
Built 1937 Load: 20.7 t ADT: 350
TR-8 (W Cnty Ln Rd
FairOver: Big Rock Creek
3.0 MI NW BIG ROCK, Kane, IL
Built 1957 Load: 20.7 t ADT: 75
TR-173 (Scott Road
FairOver: Big Rock Creek
2.0 MI NW BIG ROCK, Kane, IL
Built 1960 Load: 20.7 t ADT: 175
SUGAR GROVE ROAD
FairOver: SUGAR CREEK
1.3 M NW PALMYRA RD, Lee, IL
Built 1962 Load: 20.7 t ADT: 175
TR 32
FairOver: PIKE CR
1070 N, 600 E, Livingston, IL
Built 1955 Load: 20.7 t ADT: 75
TR 54A
FairOver: TRIB VERMILLION R
3225 N, 750 E, Livingston, IL
Built 1945 Load: 20.7 t ADT: 25
TR 282A
FairOver: N FORK VERMILION R
1430 N, 3500 E, Livingston, IL
Built 1961 Load: 20.7 t ADT: 100
FAS 566
FairOver: LOCAL DRAINAGE
CENTER OF ELKHART, Logan, IL
Built 1900 Load: 20.7 t ADT: 1,200
0083
FairOver: LOCAL DRAINAGE
4 MI N BEASON, Logan, IL
Built 1900 Load: 20.7 t ADT: 20
TR 150(GREENSWITCH
FairOver: Spring Creek
2 MI NE FORSYTH, Macon, IL
Built 1974 Load: 20.7 t ADT: 550
TR 45 Kirby Rd
FairOver: STREAM
4 MI S OF ARGENTA, Macon, IL
Built 1962 Load: 20.7 t ADT: 550
TR 474A
FairOver: SHAWS PT BR
5.5 E CARLINVILLE, Macoupin, IL
Built 1900 Load: 20.7 t ADT: 75
TR 350
FairOver: TROUBLESOME CREEK
NE-10-T5NR2W, McDonough, IL
Built 1963 Load: 20.7 t ADT: 100
OAK GROVE ROAD
FairOver: STREAM
0.5 MI SW LAWRENCE R, McHenry, IL
Built 1953 Load: 20.7 t ADT: 575
TR 54
FairOver: BRANCH-SUGAR CR
2 MILE SE STANFORD, McLean, IL
Built 1920 Load: 20.7 t ADT: 100
HONEY BEND RD
FairOver: 3 MI BRANCH
.3 MI W HONEYBEND, Montgomery, IL
Built 1932 Load: 20.7 t ADT: 75
TR 0257
FairOver: STREAM
2.7 MI SE IRVING, Montgomery, IL
Built 1936 Load: 20.7 t ADT: 75
UNNAMED RDAD (TR)D
FairOver: BR OF ELKHORN CREEK
0.2 MI NE EAGLE PT., Ogle, IL
Built 1964 Load: 20.7 t ADT: 50
TR-18
FairOver: EAST FORK WETWEATHER
0.75 MI W WAKEFIELD, Richland, IL
Built 1909 Load: 20.7 t ADT: 50
TR 192B
FairOver: STREAM
1.5 MI NW WESTERVELT, Shelby, IL
Built 1956 Load: 20.7 t ADT: 25
FAS 642(CH 19)
FairOver: ROBINSON CREEK
3.4 MI W FINDLAY, Shelby, IL
Built 1955 Load: 20.7 t ADT: 950
N FLANSBERG ROAD
FairOver: WADDAMS CREEK
4.5 MI NE OF LENA, Stephenson, IL
Built 1962 Load: 20.7 t ADT: 150
N SHADY VIEW ROAD
FairOver: BRUSH CREEK
0.5 MI E OF ILL 26, Stephenson, IL
Built 1936 Load: 20.7 t ADT: 25
CH 5
FairOver: CACHE RIVER
.8M.W.SARATOGA CL, Union, IL
Built 1951 Load: 20.7 t ADT: 225
FAS-795
FairOver: BRUSH CREEK
2.3 MI E ORCHARDVILL, Wayne, IL
Built 1959 Load: 20.7 t ADT: 900
Showing 4,651-4,700 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |