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
I-57 (NB)
FairOver: SCATTERING FORK
1.5 MI S US 36, Douglas, IL
Built 1968 Load: 24.9 t ADT: 10,150
I-57 (SB)
FairOver: SCATTERING FORK
1.5 MI S OF US 36, Douglas, IL
Built 1968 Load: 24.9 t ADT: 10,150
CH 8 GALLAHUE RD
FairOver: N FORK VERMILLION
1390E,2800N, Ford, IL
Built 1956 Load: 24.9 t ADT: 50
TR 23A PELLA
FairOver: PELLA DRAINAGE DITCH
1770E2700N, Ford, IL
Built 1969 Load: 24.9 t ADT: 25
FAS1874-HORSESHOE
FairOver: SANDUSKY CREEK
3 MI SW ILL 154, Franklin, IL
Built 1967 Load: 24.9 t ADT: 800
BAILEY RD - TR 439
FairOver: SUGAR CREEK
SE-7-T4NR1E, Fulton, IL
Built 1964 Load: 24.9 t ADT: 50
TR 180
FairOver: DEER CREEK
1.5 MI NW BURNSIDE, Hancock, IL
Built 1970 Load: 24.9 t ADT: 75
IL 92
FairOver: ROCK RIVER
HENRY/ROCK IS. CO LN, Henry, IL
Built 1997 Load: 24.9 t ADT: 2,200
TR-114B
FairOver: LAWS CREEK
3.5 MI WSW NEWTON, Jasper, IL
Built 1909 Load: 24.9 t ADT: 100
ILLINOIS STREET
FairOver: FOX RIVER
0.2 MI S ILL 64, Kane, IL
Built 1958 Load: 24.9 t ADT: 4,350
TR 60
FairOver: HORSE CR
2.8 MI E HERSCHER, Kankakee, IL
Built 1961 Load: 24.9 t ADT: 75
FAU 3792 MINKLER R
FairOver: MORGAN CREEK
1.5 MI S. IL RT 71, Kendall, IL
Built 1914 Load: 24.9 t ADT: 3,850
I-39 SB/US 51SB
FairOver: B & N RR
0.75 MI N OF US 34, LaSalle, IL
Built 1977 Load: 24.9 t ADT: 8,200
I-39 NB/US 51 NB
FairOver: B & N RR
0.76 MI N OF US 34, LaSalle, IL
Built 1977 Load: 24.9 t ADT: 8,200
FAS-806
FairOver: MUDDY CREEK
1 MI NW PETROLIA, Lawrence, IL
Built 1971 Load: 24.9 t ADT: 225
TR 244B
FairOver: FIVEMILE CREEK
1770 N, 2900 E, Livingston, IL
Built 1971 Load: 24.9 t ADT: 50
CENTRAL POINT RD
FairOver: DEER CK
1.5 E 2.5 N BEASON, Logan, IL
Built 1967 Load: 24.9 t ADT: 150
TR 95-FRITZ KORTE
FairOver: TRIB TO SEVENMILE CR
1000N 1755E, Massac, IL
Built 1900 Load: 24.9 t ADT: 50
I-55 SB
FairOver: TURKEY CREEK
1.25 NW OF LEXINGTON, McLean, IL
Built 1973 Load: 24.9 t ADT: 11,700
I-55 NB
FairOver: TURKEY CREEK
1.25 NW OF LEXINGTON, McLean, IL
Built 1972 Load: 24.9 t ADT: 11,700
TR 252
FairOver: LITTLE KICKAPOO CR
CAPODICE RD 74 & 150, McLean, IL
Built 1966 Load: 24.9 t ADT: 1,300
TR 180
FairOver: BRANCH TIMBER CREEK
1 MI E SHIRLEY, McLean, IL
Built 1964 Load: 24.9 t ADT: 50
TR 540
FairOver: BR MACKINAW RIVER
1.2 MI S COLFAX, McLean, IL
Built 1966 Load: 24.9 t ADT: 50
TR 168 A
FairOver: BR KICKAPOO
RANDOLPH WLINE SEC 7, McLean, IL
Built 1974 Load: 24.9 t ADT: 450
TR 183A
FairOver: POPE CREEK
CTR-26-T14NR2W, Mercer, IL
Built 1964 Load: 24.9 t ADT: 75
CH 3
FairOver: WHITLEY CREEK
3 MI S ALLENVILLE, Moultrie, IL
Built 1953 Load: 24.9 t ADT: 150
TOWN LINE RD.
FairOver: BR. ELKHORN CR.
1.0 S.W. FORRESTON, Ogle, IL
Built 1965 Load: 24.9 t ADT: 200
TR-17A (SANTA FE R
FairOver: Gilfillian Creek
SE,NE-23-HALLOCK, Peoria, IL
Built 1963 Load: 24.9 t ADT: 225
I-72 / US 36 (EB)
FairOver: PIGEON CREEK
2.43M W IL96/HULL IN, Pike, IL
Built 1987 Load: 24.9 t ADT: 4,700
I-72 / US 36 (WB)
FairOver: PIGEON CREEK
2.43M W IL96/HULL IN, Pike, IL
Built 1987 Load: 24.9 t ADT: 4,700
TR 84
FairOver: N WOLF RUN
2.5 MI E BLUFFS, Scott, IL
Built 1972 Load: 24.9 t ADT: 25
CORNING ROAD
FairOver: TRIM CREEK
0.1 E ILL-1, Will, IL
Built 1929 Load: 24.9 t ADT: 250
MARLEY RD
FairOver: HICKORY CREEK
0.8 MI NO US30, Will, IL
Built 1968 Load: 24.9 t ADT: 5,000
FAS 903 (UNMARKED)
FairOver: BEAR CREEK
2 MI W JOHNSTON CITY, Williamson, IL
Built 1956 Load: 24.9 t ADT: 6,000
LINDENWOOD RD
FairOver: UNNAMED CREEK
05 MI SE NEW MILFORD, Winnebago, IL
Built 1941 Load: 24.9 t ADT: 1,950
10TH AV
FairOver: KEITH CREEK
0.1 MI E KISHWAUKEE, Winnebago, IL
Built 1910 Load: 24.9 t ADT: 475
FAS 364 CH 13
FairOver: TRIB W BR PANTHER CR
2.5 MI S ROANOKE, Woodford, IL
Built 1950 Load: 24.9 t ADT: 750
TR 35
FairOver: HILLSBURY SLOUGH
3.8 MI NE OF FISHER, Champaign, IL
Built 1962 Load: 25.3 t ADT: 325
TR-157
FairOver: PANTHER CREEK
2.5 MI NE LOUISVILLE, Clay, IL
Built 1975 Load: 25.3 t ADT: 100
IL 130 (FAP 116)
FairOver: EMBARRAS RIVER
2.5 MI S CHARLESTON, Coles, IL
Built 1981 Load: 25.3 t ADT: 6,550
Thacker Street
FairOver: Trib W Br of Salt Cr
.14 M W National Pr., Cook, IL
Built 1992 Load: 25.3 t ADT: 2,200
I90 CHGO SKYWAY
FairOver: FINISHED GROUND
.07M SE OF EWING, Cook, IL
Built 2004 Load: 25.3 t ADT: 28,700
KIRKLAND ROAD
FairOver: S BR KISHWAUKEE RV
3210N 490E, DeKalb, IL
Built 1980 Load: 25.3 t ADT: 575
IL 53 SB
FairOver: MORTON ARBORETUM DR
0.24 M N I-88, DuPage, IL
Built 1959 Load: 25.3 t ADT: 22,700
FAI-70 EB
FairOver: LICK CREEK
1.69 MI E BOND CO LN, Fayette, IL
Built 1965 Load: 25.3 t ADT: 12,900
FAI-70 WB
FairOver: LICK CREEK
1.69 MI E BOND CO LN, Fayette, IL
Built 1965 Load: 25.3 t ADT: 12,900
FAP-750 (ILL-185)
FairOver: LONE GROVE BRANCH
0.5 MI N. ST PETER, Fayette, IL
Built 1932 Load: 25.3 t ADT: 950
CH-3
FairOver: LYNN CREEK
2 MI N AVENA, Fayette, IL
Built 1935 Load: 25.3 t ADT: 250
TR 32B DIX
FairOver: BLACKFORD SLOUGH
110N,E900, Ford, IL
Built 1971 Load: 25.3 t ADT: 225
ILL 14
FairOver: OVERFLOW L MUDDY R.
0.15 E PERRY CO LINE, Franklin, IL
Built 1955 Load: 25.3 t ADT: 3,550
Showing 5,751-5,800 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 |