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.118
Structurally DeficientOver: WALNUT CR
1500 EAST 525 NORTH, Woodford, IL
Built 1974 Load: 24.6 t ADT: 350
US 67 / IL 100
Structurally DeficientOver: ILLINOIS RIVER
W EDGE BEARDSTOWN, Cass, IL
Built 1955 Load: 24.9 t ADT: 5,600
TR 225 A
Structurally DeficientOver: LITTLE WABASH RIVER
1.5 MI N PARADISE, Coles, IL
Built 1982 Load: 24.9 t ADT: 450
TR 351
Structurally DeficientOver: TRIB TO PIGEON CR
2.2 MI W. ILL RT 49, Iroquois, IL
Built 1961 Load: 24.9 t ADT: 25
MCCLURE ST
Structurally DeficientOver: CEDAR CREEK
SOUTH OF W. MAIN ST., Knox, IL
Built 1956 Load: 24.9 t ADT: 1,850
I-155 & RAMPS A &
Structurally DeficientOver: S FK PRAIRIE CREEK
.2M S US 136, Logan, IL
Built 1990 Load: 24.9 t ADT: 5,825
TR 2 B PIATT CO
Structurally DeficientOver: STREAM
3.8 MI NE OF OAKLEY, Macon, IL
Built 1964 Load: 24.9 t ADT: 75
FAU 9300
Structurally DeficientOver: CARR CREEK
0.1M S COLUMBIA, Monroe, IL
Built 1995 Load: 24.9 t ADT: 4,100
MS 6190 (CARL ST)
Structurally DeficientOver: CREEK
200' SO. OF IL 3, Monroe, IL
Built 1972 Load: 24.9 t ADT: 1,150
ILL 145
Structurally DeficientOver: BEAR CREEK DITCH
0.6 MI N MASSAC CO, Pope, IL
Built 1932 Load: 24.9 t ADT: 1,800
TR-7 (Airport Road
Structurally DeficientOver: EAST FORK NETTLE CR
0.65 MI W OF TR 86, Grundy, IL
Built 1980 Load: 25.3 t ADT: 225
FAS-1273 (DuPont R
Structurally DeficientOver: Waupecan Creek
0.4 MI W OF CH 7, Grundy, IL
Built 1957 Load: 25.3 t ADT: 1,400
THAYER ROAD
Structurally DeficientOver: NIPPERSINK CREEK
0.3 MI W OF IL 47, McHenry, IL
Built 1975 Load: 25.3 t ADT: 800
CH 18
Structurally DeficientOver: MUD CREEK
1.8 MI W OF HENTON, Shelby, IL
Built 1961 Load: 25.3 t ADT: 250
TR 63
Structurally DeficientOver: DRY FORK
4M N OLD RIPLEY, Bond, IL
Built 1978 Load: 25.6 t ADT: 50
TR 255
Structurally DeficientOver: STREAM
3.0 MI W PHILO, Champaign, IL
Built 1982 Load: 25.6 t ADT: 300
CLARENCE RD FAS 5
Structurally DeficientOver: SUGAR CREEK
240N,2600E, Ford, IL
Built 1959 Load: 25.6 t ADT: 250
CH19 PIPER THAWVIL
Structurally DeficientOver: N FK VERMILION RIVER
2320N 1700E, Ford, IL
Built 1976 Load: 25.6 t ADT: 75
TR159A STONEWALL R
Structurally DeficientOver: TRIB E FK MAZON RIV
0.30 MI W OF CH-16, Grundy, IL
Built 1974 Load: 25.6 t ADT: 50
NORTHERN AVE
Structurally DeficientOver: NETTLE CREEK
NORT AVE OV NETTLE C, Grundy, IL
Built 1969 Load: 25.6 t ADT: 700
MS-1130 (JUDSON AV
Structurally DeficientOver: RAVINE
.1 E C&NW 1 M N CO L, Lake, IL
Built 1963 Load: 25.6 t ADT: 300
TR-263
Structurally DeficientOver: RACCOON CREEK
6.25 MI S BRIDGEPORT, Lawrence, IL
Built 1995 Load: 25.6 t ADT: 50
SB ILL 6
Structurally DeficientOver: HOERR'S POND
0.7 MI N OF US 150, Peoria, IL
Built 1981 Load: 25.6 t ADT: 21,100
TR 56
Structurally DeficientOver: STREAM
2.0 MI SW MONTICELLO, Piatt, IL
Built 1969 Load: 25.6 t ADT: 50
FAU-1405 (Lake St)
Structurally DeficientOver: S BR CHICAGO RIV
356 W LAKE ST, Cook, IL
Built 1916 Load: 25.9 t ADT: 10,250
TR 61 A
Structurally DeficientOver: CRABAPPLE CREEK
1 MI E OF CHRISMAN, Edgar, IL
Built 1960 Load: 25.9 t ADT: 275
SBI 13 (UNMARKED)
Structurally DeficientOver: CYPRESS DITCH
0.1 MI N OF JUNCTION, Gallatin, IL
Built 1940 Load: 25.9 t ADT: 10
PRAIRIE RD TR-123A
Structurally DeficientOver: MURRAY RUN
.27 MI E DWIGHT RD, Grundy, IL
Built 1976 Load: 25.9 t ADT: 75
TR 83A
Structurally DeficientOver: WILDCAT CREEK
5.0 MI SW LAHARPE, Hancock, IL
Built 1970 Load: 25.9 t ADT: 75
TR 352
Structurally DeficientOver: TRIB MUD CR
2MIW.5MIS GREER, Iroquois, IL
Built 1967 Load: 25.9 t ADT: 50
TR 37
Structurally DeficientOver: W FORK MAZON R
2260 E, 2900 N, Livingston, IL
Built 1960 Load: 25.9 t ADT: 75
OR-6137 (PUB PRK R
Structurally DeficientOver: MOUNTAIN BRANCH
STEPHEN FORBES ST PK, Marion, IL
Built 1965 Load: 25.9 t ADT: 25
MS-1505 BulingtonR
Structurally DeficientOver: E Fork Lamoine River
SE-25-T6NR3W, McDonough, IL
Built 1931 Load: 25.9 t ADT: 550
ILL 40
Structurally DeficientOver: CAMP CREEK
N JCT ILL 40 & 17, Peoria, IL
Built 1928 Load: 25.9 t ADT: 1,500
FAS-796 (CH-6)
Structurally DeficientOver: DISMAL CREEK
2.5 MI N IOLA, Clay, IL
Built 1959 Load: 26.2 t ADT: 375
KINZIE ST
Structurally DeficientOver: N BR CHICAGO RIV
423 W KINZIE, Cook, IL
Built 1909 Load: 26.2 t ADT: 6,350
MICHIGAN AVE
Structurally DeficientOver: MAIN BR CHICAGO RIV
365 N MCHIGAN AVE, Cook, IL
Built 1920 Load: 26.2 t ADT: 24,300
TR 16(MERIDIAN RD)
Structurally DeficientOver: SPRING CREEK
1.45 MI NW BLUE MOUN, Macon, IL
Built 1978 Load: 26.2 t ADT: 100
TR 93A
Structurally DeficientOver: TWO MILE BRANCH
2 MI N SULLIVAN, Moultrie, IL
Built 1965 Load: 26.2 t ADT: 25
NB ILL 6
Structurally DeficientOver: HOERR'S POND
0.7 MI N OF US 150, Peoria, IL
Built 1981 Load: 26.2 t ADT: 21,100
MERIDIAN RD
Structurally DeficientOver: PECATONICARIVER
0.7 MI SE SHIRLAND, Winnebago, IL
Built 1973 Load: 26.2 t ADT: 1,650
IL 57
Structurally DeficientOver: MILL CREEK
AT MARBLEHEAD, Adams, IL
Built 1932 Load: 26.6 t ADT: 4,450
FAS 943
Structurally DeficientOver: AMBEER CREEK
0.5 MI S DISWOOD, Alexander, IL
Built 1982 Load: 26.6 t ADT: 650
TR 307
Structurally DeficientOver: COOP BRANCH
3.0 MI E MEDORA, Macoupin, IL
Built 1968 Load: 26.6 t ADT: 50
ROAD DISTRICT 186
Structurally DeficientOver: COOLING CANAL
4.0 MI N CORDOVA, Rock Island, IL
Built 1973 Load: 26.6 t ADT: 250
RUSSEL ST MSS 1034
Structurally DeficientOver: TRIB OF SHOAL CK
POCAHONTAS, Bond, IL
Built 1920 Load: 26.9 t ADT: 50
TR 391
Structurally DeficientOver: STREAM
3.4 MI W MOONSHINE, Clark, IL
Built 1977 Load: 26.9 t ADT: 75
TR-7 (Airport Road
Structurally DeficientOver: W FORK NETTLE CREEK
1.05 MI E OF TR 28, Grundy, IL
Built 1975 Load: 26.9 t ADT: 125
TR 76 (TH-S28)
Structurally DeficientOver: SNAG CREEK
T29N-R2W-3PM SEC 33, Marshall, IL
Built 1935 Load: 26.9 t ADT: 125
QUEEN ANNE RD
Structurally DeficientOver: NIPPERSINK CREEK
2.7 MI N CHARLES RD, McHenry, IL
Built 1960 Load: 26.9 t ADT: 575
Showing 27,451-27,500 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 |