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
RAGAR RD - TR 67
FairOver: MACKINAW RIVER
S.CTR-25-T25NR2W, Tazewell, IL
Built 1964 Load: 29.8 t ADT: 125
DALE RD - TR 296
FairOver: W F SUGAR CREEK
N.CTR-9-T22NR2W, Tazewell, IL
Built 1975 Load: 29.8 t ADT: 25
US 51
FairOver: STREAM
3.7 MI N OF IL146, Union, IL
Built 1964 Load: 29.8 t ADT: 5,950
AVE "G"
FairOver: N BR ROCK RIVER
IN STERLING, Whiteside, IL
Built 1948 Load: 29.8 t ADT: 7,700
CAPP ROAD
FairOver: ELK HORN CREEK
5 MI N. STERLING, Whiteside, IL
Built 1956 Load: 29.8 t ADT: 50
PERKINS RD.
FairOver: COUNTY DITCH NO. 2
4 MI S.E. PROPHETSTO, Whiteside, IL
Built 1960 Load: 29.8 t ADT: 75
I- 55 SB
FairOver: DES PLAINES RIVER
2.3 M S OF US 6, Will, IL
Built 1957 Load: 29.8 t ADT: 29,400
I- 55 NB
FairOver: DES PLAINES RIVER
2.3 M S OF US 6, Will, IL
Built 1957 Load: 29.8 t ADT: 29,400
I- 55 NB
FairOver: RR - BNSF & CREEK
5.7 M S OF US 6, Will, IL
Built 1996 Load: 29.8 t ADT: 24,700
WIL-PEO RD.
FairOver: FORKED CREEK
0.3M.E.OFIL-53, Will, IL
Built 1988 Load: 29.8 t ADT: 6,250
ILL 166
FairOver: S FORK SALINE RELIEF
3.3 MI S OF ILL 13, Williamson, IL
Built 1934 Load: 29.8 t ADT: 3,000
PECATONICA RD
FairOver: PEC. RIVER OV'FLOW
0.2 MI. N PECATONICA, Winnebago, IL
Built 1985 Load: 29.8 t ADT: 2,700
TR 0274
FairOver: CROOKED CREEK
2.0 MI SE LORAINE, Adams, IL
Built 1900 Load: 30.1 t ADT: 50
FAS 1582
FairOver: SO BR MISSOURI CR.
6.5 NW MT STERLING, Brown, IL
Built 1962 Load: 30.1 t ADT: 200
IL 92 FAP 587
FairOver: BAKERS DR DITCH
0.9 MI W JCT ILL 40, Bureau, IL
Built 1958 Load: 30.1 t ADT: 600
TR 269 A
FairOver: EMBARRAS RIVER
3.0 MI SE TOLONO, Champaign, IL
Built 1969 Load: 30.1 t ADT: 275
OLD US 50
FairOver: LAKE BRANCH
1.2 M E AVISTON, Clinton, IL
Built 1922 Load: 30.1 t ADT: 4,650
IL 16 (FAP 91)
FairOver: POLE CAT CREEK
1.5 MI E ASHMORE, Coles, IL
Built 1958 Load: 30.1 t ADT: 3,200
IL 43 (HARLEM AVE
FairOver: STONEY CREEK
0.3 M S 103RD ST, Cook, IL
Built 1960 Load: 30.1 t ADT: 40,400
IL 83,171 (KINGER
FairOver: CAL SAG CHANNEL
.1MI S OF 171,N JCT, Cook, IL
Built 1934 Load: 30.1 t ADT: 20,500
IL 390 EB EOH
FairOver: RR - METRA, WETLANDS
.8M E OF US 20, Cook, IL
Built 1993 Load: 30.1 t ADT: 25,700
CENTRAL AVE
FairOver: TINLEY CREEK
0.6 N 135TH ST P26, Cook, IL
Built 1941 Load: 30.1 t ADT: 4,600
IL 58 (GOLF RD)
FairOver: TRIB TO POPLAR CR
1.12 M W OF IL 59;, Cook, IL
Built 1920 Load: 30.1 t ADT: 11,800
MAPLE AVE
FairOver: N SHORE CHANNEL
WILMETTE, Cook, IL
Built 1909 Load: 30.1 t ADT: 400
FAP-332 (ILL-1)
FairOver: BRUSHY CREEK
0.25 MI N FL ROCK RD, Crawford, IL
Built 1924 Load: 30.1 t ADT: 3,800
TR 14 A
FairOver: BUSH CR & LK MATTOON
2.5 MI NE OF NEOGA, Cumberland, IL
Built 1957 Load: 30.1 t ADT: 100
CH 18 BUCKINGHAM R
FairOver: STREAM
3640N,1600E, Ford, IL
Built 1964 Load: 30.1 t ADT: 50
TR 24 DRUMMER CR
FairOver: DICKERSON SLOUGH
140N,600E, Ford, IL
Built 1969 Load: 30.1 t ADT: 100
DEPOT RD - TR 491
FairOver: OTTER CREEK
NE-33-T4NR1E, Fulton, IL
Built 1976 Load: 30.1 t ADT: 50
ILL 164
FairOver: HENDERSON CREEK
3 MI N OF GLADSTONE, Henderson, IL
Built 1984 Load: 30.1 t ADT: 2,050
TR 422
FairOver: BEAVER CR
.5 N CH 3, Iroquois, IL
Built 1957 Load: 30.1 t ADT: 25
TR 95
FairOver: TRIB. PRAIRIE CR
3 MI NE OF DANFORTH, Iroquois, IL
Built 1973 Load: 30.1 t ADT: 25
TR 363A
FairOver: GAY CREEK
.8MI W ILL 1, Iroquois, IL
Built 1963 Load: 30.1 t ADT: 125
FAS 749
FairOver: OTTER CREEK
3.0 MI S ILL 16, Jersey, IL
Built 1960 Load: 30.1 t ADT: 1,100
RANDALL ROAD
FairOver: FERSON CREEK
0.2 MI S of Crane Rd, Kane, IL
Built 1955 Load: 30.1 t ADT: 29,500
US 45&52
FairOver: N BR OF ROCK CREEK
0.3 MI N MANTENO RD, Kankakee, IL
Built 1967 Load: 30.1 t ADT: 5,900
ILL 71 AND ILL 23
FairOver: IL RV & ACC RD
1 MILE SOUTH US 6, LaSalle, IL
Built 1981 Load: 30.1 t ADT: 22,900
TR-20A
FairOver: SPRING CREEK
E 1ST N 3410, LaSalle, IL
Built 1966 Load: 30.1 t ADT: 25
TR 0104A0
FairOver: STREAM
E 6TH N 1130, LaSalle, IL
Built 1963 Load: 30.1 t ADT: 100
PONTIAC ST
FairOver: BAILEY CREEK
PONTIAC ST OV BAI CR, LaSalle, IL
Built 1962 Load: 30.1 t ADT: 250
CO HWY 27 FAS-2056
FairOver: ROOKS CREEK
6 MI W OF PONTIAC, Livingston, IL
Built 1972 Load: 30.1 t ADT: 275
TR 208
FairOver: INDIAN CREEK
235 N, 2300 E, Livingston, IL
Built 1970 Load: 30.1 t ADT: 125
TR 93
FairOver: SCATTERING PT CREEK
790 E,2250 N, Livingston, IL
Built 1979 Load: 30.1 t ADT: 250
TR 176
FairOver: LAKE FORK CK
1 W 1.5 MI S LAKE FK, Logan, IL
Built 1964 Load: 30.1 t ADT: 100
TR 56(GLASGOW RD)
FairOver: STREAM
5.2 MI SW OF MAROA, Macon, IL
Built 1972 Load: 30.1 t ADT: 100
TR 220
FairOver: CREEK
4.0 MI SE HETTICK, Macoupin, IL
Built 1900 Load: 30.1 t ADT: 35
CH 24 DAUDERMAN RD
FairOver: SUGAR FK
1.4MI S ALHAMBRA, Madison, IL
Built 1963 Load: 30.1 t ADT: 400
MC GUIRE ROAD
FairOver: RUSH CREEK
0.1 MI S SCHULTZ RD, McHenry, IL
Built 1955 Load: 30.1 t ADT: 2,200
TR 44
FairOver: DRAINAGE DITCH
3.5 MI SW LOVINGTON, Moultrie, IL
Built 1988 Load: 30.1 t ADT: 25
TR 37
FairOver: W OKAW RIVER
2 MI SW LOVINGTON, Moultrie, IL
Built 1974 Load: 30.1 t ADT: 425
Showing 6,701-6,750 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.