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-58
FairOver: PIGEON ROOST CK
0.5M NW OLIVE BRANCH, Alexander, IL
Built 1954 Load: 16.8 t ADT: 500
FAS 754
FairOver: NOLTE CREEK
3.2 M SE OF BRUSSELS, Calhoun, IL
Built 1957 Load: 16.8 t ADT: 600
TR 251
FairOver: KELLER BRANCH
5MI S TAYLORVILLE, Christian, IL
Built 1956 Load: 16.8 t ADT: 50
TR 312
FairOver: STREAM
2.5 MI E PITTWOOD, Iroquois, IL
Built 1954 Load: 16.8 t ADT: 50
FAS-705
FairOver: TRIB POND GROVE CK
1.3 MI S STE MARIE, Jasper, IL
Built 1916 Load: 16.8 t ADT: 1,400
COUNTY HIGHWAY 30
FairOver: OVER-FLOW LAKE STORY
N1/2-32-T12NR1E, Knox, IL
Built 1928 Load: 16.8 t ADT: 375
MS-4101 Dean Avenu
FairOver: RAVINE
1.5 N CO LINE, Lake, IL
Built 1928 Load: 16.8 t ADT: 900
COTTAGE HILL ROAD
FairOver: UNNAMED CREEK
0.3 M W ANGLING RD, Lee, IL
Built 1963 Load: 16.8 t ADT: 75
TR 239(WELLS RD)
FairOver: SAND CREEK
3 MI E 3 MI N MACON, Macon, IL
Built 1968 Load: 16.8 t ADT: 50
TR 250
FairOver: HENDERSON CREEK
W.CTR-17-T13NR1W, Mercer, IL
Built 1957 Load: 16.8 t ADT: 10
TR 78
FairOver: WILLOW CRK.
3 MI W JACKSONVILLE, Morgan, IL
Built 1900 Load: 16.8 t ADT: 175
LAUREL ST
FairOver: JACKSONVILLE BR
20FT W OUTER PK DR, Sangamon, IL
Built 1967 Load: 16.8 t ADT: 1,800
ILL 127 & ILL 146
FairOver: STREAM
0.6 MI W. JONESBORO, Union, IL
Built 1933 Load: 16.8 t ADT: 4,800
FAS 331(CH 10)
FairOver: STREAM
1.5 MI N OF POTOMAC, Vermilion, IL
Built 1930 Load: 16.8 t ADT: 350
E CYCLONE RIDGE RO
FairOver: ROCK CREEK
1 MI S LANARK, Carroll, IL
Built 1954 Load: 17.2 t ADT: 150
FAS 577
FairOver: INDIAN RUN
5 MI NNW VIRGINIA, Cass, IL
Built 1947 Load: 17.2 t ADT: 600
FAS 639
FairOver: SIMPSONS BRANCH
0.12 MI N PALMER, Christian, IL
Built 1947 Load: 17.2 t ADT: 150
SHERIDAN RD
FairOver: N SHORE CHANNEL
2.5 M N ILL 58 P12, Cook, IL
Built 1911 Load: 17.2 t ADT: 9,400
PRIVATE ENTR.
FairOver: THOMPSON LAKE DIT
2 MI N JCT 136 ENT, Fulton, IL
Built 1935 Load: 17.2 t ADT: 10
TR 300
FairOver: TRIB OF LA MOINE R
0.2 MI N OF LA HARPE, Hancock, IL
Built 1908 Load: 17.2 t ADT: 75
FAP-312 (IL-3)
FairOver: Stream
1.8M E RANDOLPH CL, Jackson, IL
Built 1933 Load: 17.2 t ADT: 2,150
MS-3600
FairOver: BIG MUDDY CREEK
WHEELER, Jasper, IL
Built 1970 Load: 17.2 t ADT: 125
US 45
FairOver: STREAM
1 MI.S.NEW BURNSIDE, Johnson, IL
Built 1922 Load: 17.2 t ADT: 1,750
TR 298
FairOver: S FORK LAKE FORK CK
3.5 S 1 MI E NARITA, Logan, IL
Built 1955 Load: 17.2 t ADT: 20
TR 3
FairOver: LOCAL DRAINAGE
1 MI N 3 MI E EMDEN, Logan, IL
Built 1962 Load: 17.2 t ADT: 25
CH 34
FairOver: OTTER CREEK
HAGAMAN, Macoupin, IL
Built 1936 Load: 17.2 t ADT: 50
TR 6-ANDERSON PIT
FairOver: PATERSON BRANCH
1.55 MI NW HILLERMAN, Massac, IL
Built 1900 Load: 17.2 t ADT: 25
AGNEW RD
FairOver: DRAINAGE
AGNEW RD N@US 30, Whiteside, IL
Built 1939 Load: 17.2 t ADT: 25
WOLF CREEK ROAD
FairOver: CRAB ORCHARD LAKE
2.5 MI SW OF HDQRTRS, Williamson, IL
Built 1938 Load: 17.2 t ADT: 150
TR 53
FairOver: CEDAR CRK.
2.0 MI NE LAPRAIRIE, Adams, IL
Built 1905 Load: 17.5 t ADT: 75
TR 542
FairOver: CREEK
1.6 MI SE CLAYTON, Adams, IL
Built 1905 Load: 17.5 t ADT: 25
TR 247
FairOver: FLAT BR CREEK
2.5 MI WEST TOMALCO, Bond, IL
Built 1975 Load: 17.5 t ADT: 100
TR 247
FairOver: TRIB TO CARLYLE LAKE
1.75M N OFKEYESPORT, Bond, IL
Built 1974 Load: 17.5 t ADT: 75
TR-209
FairOver: TRIB OF SPRING BR
5MI N OF KEYSPORT, Bond, IL
Built 1970 Load: 17.5 t ADT: 150
CH 4
FairOver: PLOW HOLLOW CREEK
1 MI S TISKILWA, Bureau, IL
Built 1943 Load: 17.5 t ADT: 550
TR 222
FairOver: W. BUREAU CREEK
6 MI. N.W. PRINCETON, Bureau, IL
Built 1910 Load: 17.5 t ADT: 25
HOPPS STREET
FairOver: PIKE CREEK
SE LAMOILLE, Bureau, IL
Built 1923 Load: 17.5 t ADT: 100
TR 104
FairOver: STREAM
0.50 NE GOLDEAGLEFRY, Calhoun, IL
Built 1901 Load: 17.5 t ADT: 25
MSS 6120
FairOver: STREAM
N COUNTY RD INHARDIN, Calhoun, IL
Built 1950 Load: 17.5 t ADT: 125
N FLORY ROAD
FairOver: WEST FORK
6 MILES EAST LANARK, Carroll, IL
Built 1921 Load: 17.5 t ADT: 25
E COOK ROAD
FairOver: OTTER CREEK
4 MI E CHADWICK, Carroll, IL
Built 1920 Load: 17.5 t ADT: 50
E SCHELL ROAD
FairOver: BRANCH OF ELKHORN CR
2 MI SE MILLEDGEVILL, Carroll, IL
Built 1920 Load: 17.5 t ADT: 150
TR 196
FairOver: TOOLE CREEK
2MI NW OWANECO, Christian, IL
Built 1919 Load: 17.5 t ADT: 425
TR 167
FairOver: GRASSY BRANCH
2MI. N.W. GTOWN, Clinton, IL
Built 1968 Load: 17.5 t ADT: 450
TR 251/W. TENTH ST
FairOver: SEWER CREEK
.25 MI. S. CENTRALIA, Clinton, IL
Built 1970 Load: 17.5 t ADT: 275
FAS 676(CH 5)
FairOver: W BR HURRICANE CREEK
1.20 MI S FAS 675, Coles, IL
Built 1941 Load: 17.5 t ADT: 325
108TH AVE
FairOver: MARLEY CR
0.5 M N 167TH, Cook, IL
Built 1900 Load: 17.5 t ADT: 7,500
SEE GWUN AVE
FairOver: WELLER CR
0.5 M N ILL 58 P5, Cook, IL
Built 1970 Load: 17.5 t ADT: 1,150
TR 93
FairOver: CREEK
4 MI N OBLONG, Crawford, IL
Built 1914 Load: 17.5 t ADT: 50
FAU-8320
FairOver: CREEK
ROBINSON, Crawford, IL
Built 1909 Load: 17.5 t ADT: 2,200
Showing 4,251-4,300 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 |