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 (SB)
FairOver: BUSH CREEK
.7 MI S COLES CO LIN, Cumberland, IL
Built 1964 Load: 31.1 t ADT: 9,450
I-57 (NB)
FairOver: BUSH CREEK
.7 MI S COLES CO LIN, Cumberland, IL
Built 1964 Load: 31.1 t ADT: 9,450
FAP 76(IL 48)
FairOver: CLINTON LAKE
4 MI N OF WELDON, De Witt, IL
Built 1976 Load: 31.1 t ADT: 1,100
US 34
FairOver: E BR DU PAGE RIVER
0.2 M W IL 53, DuPage, IL
Built 1982 Load: 31.1 t ADT: 25,200
US 150IL 1(FAP 332
FairOver: CRABAPPLE CREEK
4 MI N OF CHRISMAN, Edgar, IL
Built 1954 Load: 31.1 t ADT: 2,300
FAS-712
FairOver: KASKASKIA RIVER
6 MI S HERRICK, Fayette, IL
Built 1967 Load: 31.1 t ADT: 600
TR 327
FairOver: LITTLE BEAR CREEK
5 MI SE WARSAW, Hancock, IL
Built 1976 Load: 31.1 t ADT: 50
FAS 2830 CH 13
FairOver: CASEY FORK
1 MI W BONNIE, Jefferson, IL
Built 1968 Load: 31.1 t ADT: 450
TOWNSHIP ROAD NO 3
FairOver: SMALLPOX CREEK
3 MI S.E. OF GALENA, Jo Daviess, IL
Built 1963 Load: 31.1 t ADT: 250
CH 22
FairOver: SPRING CR
3.2 MI E AROMA PARK, Kankakee, IL
Built 1960 Load: 31.1 t ADT: 1,000
FAU 6009/N. 44TH R
FairOver: LITTLE VERMILIAN R.
N 44TH E 405, LaSalle, IL
Built 1971 Load: 31.1 t ADT: 25
WALTON RD
FairOver: GREEN RIVER
2.2 MI S AMBOY RD, Lee, IL
Built 1974 Load: 31.1 t ADT: 50
TR 17
FairOver: DITCH JOHNNY RUN
1810 E, 3100 N, Livingston, IL
Built 1962 Load: 31.1 t ADT: 50
TR 201
FairOver: N FORK LAKE FORK CK
2.5 MI N LATHAM, Logan, IL
Built 1972 Load: 31.1 t ADT: 125
TR 234
FairOver: DEER CK TR 1B
3 M E 1 M S LINCOLN, Logan, IL
Built 1974 Load: 31.1 t ADT: 75
TR 328
FairOver: MACOUPIN CREEK
1 MI S CARLINVILLE, Macoupin, IL
Built 1977 Load: 31.1 t ADT: 375
TR 144 (TH-S57)
FairOver: SANDY CREEK
T30N-R1E-3PM SEC 10, Marshall, IL
Built 1967 Load: 31.1 t ADT: 150
MCGUIRE RD
FairOver: N.BR. KISHAWAUKEE
1.2MI W ALDEN RD, McHenry, IL
Built 1996 Load: 31.1 t ADT: 2,400
I-74
FairOver: DRAINAGE DITCH
10.39 M E OF BS51, McLean, IL
Built 1969 Load: 31.1 t ADT: 21,600
OLD US 36
FairOver: MAUVAISE TERRE CR
2.25M E I-72 INTCHG, Morgan, IL
Built 1947 Load: 31.1 t ADT: 950
TR 128
FairOver: BRUSHY CRK
3 MI NW WOODSON, Morgan, IL
Built 1971 Load: 31.1 t ADT: 275
ILL 48(FAP 760)
FairOver: CREEK
2.6 MI N OF I-72, Piatt, IL
Built 1931 Load: 31.1 t ADT: 1,250
I-72 (EB)
FairOver: SANGAMON RIVER
N OF MONTICELLO, Piatt, IL
Built 1975 Load: 31.1 t ADT: 5,450
I-72 (WB)
FairOver: SANGAMON RIVER
N OF MONTICELLO, Piatt, IL
Built 1975 Load: 31.1 t ADT: 5,450
TR 36
FairOver: WALNUT CREEK DITCH
1.0 MI N OF HULL, Pike, IL
Built 1968 Load: 31.1 t ADT: 125
TR 110
FairOver: THE SNY
1.25 MI SW ROCKPORT, Pike, IL
Built 1975 Load: 31.1 t ADT: 225
MILAN BELTWAY
FairOver: MILL CREEK
1.0 M S OF MILAN, Rock Island, IL
Built 1981 Load: 31.1 t ADT: 8,400
ILL 16(FAP 325)
FairOver: CREEK
.8 MI W ROBINSON CR, Shelby, IL
Built 1966 Load: 31.1 t ADT: 4,800
TR 49
FairOver: STREAM
3.5 MI. N. WOLF LAKE, Union, IL
Built 1942 Load: 31.1 t ADT: 10
FAI 64 EB
FairOver: MIDDLE CREEK
2.5 MI E ILL 127, Washington, IL
Built 1972 Load: 31.1 t ADT: 14,000
FAI 64 WB
FairOver: MIDDLE CREEK
2.5 MI E ILL 127, Washington, IL
Built 1972 Load: 31.1 t ADT: 14,000
LUTHER RD
FairOver: COUNTY DITCH NO 1
3 MI NE OF TAMPICO, Whiteside, IL
Built 1975 Load: 31.1 t ADT: 150
I-88 WB
FairOver: HOWLAND CREEK
.2 MI W LEE CO LINE, Whiteside, IL
Built 1972 Load: 31.1 t ADT: 7,850
BARNES DR.
FairOver: E BRANCH KANKAKEE RV
0.25 MI N KAHLER RD, Will, IL
Built 2011 Load: 31.1 t ADT: 1,350
ILL 166
FairOver: STREAM
2.7 MI SO OF ILL 13, Williamson, IL
Built 1934 Load: 31.1 t ADT: 3,000
FAS 2943
FairOver: MILLER CREEK
E.CORP LIMIT THERES, Alexander, IL
Built 1975 Load: 31.4 t ADT: 125
TWP RD 41
FairOver: SEXTON CK
2.3 MI N OF GALE, Alexander, IL
Built 1974 Load: 31.4 t ADT: 50
US 40(FAS1707)
FairOver: STREAM
W CLARK CENTER, Clark, IL
Built 1952 Load: 31.4 t ADT: 2,350
TR 265
FairOver: SNYDER CREEK
6 MI S MARSHALL, Clark, IL
Built 1980 Load: 31.4 t ADT: 75
TR 137/SAND RIDGE
FairOver: PRAIRIE CREEK
1 MI SE HUEY, Clinton, IL
Built 1948 Load: 31.4 t ADT: 225
IL 16 WB (FAP 91)
FairOver: RILEY CREEK
0.5 MI W CHARLESTON, Coles, IL
Built 1961 Load: 31.4 t ADT: 15,100
IL 16 EB (FAP 91)
FairOver: RILEY CREEK
0.5 MI W CHARLESTON, Coles, IL
Built 1961 Load: 31.4 t ADT: 15,100
IL 43 (HARLEM AVE
FairOver: CAL SAG CHANNEL
0.2 M N IL 83, Cook, IL
Built 1964 Load: 31.4 t ADT: 34,900
WOLF RD
FairOver: MCDONALD CREEK
3.7 M S IL 68, Cook, IL
Built 1932 Load: 31.4 t ADT: 9,600
FOREST WAY DR
FairOver: DITCH
0.5 M S OF DUNDEE RD, Cook, IL
Built 1954 Load: 31.4 t ADT: 2,400
MT PROSPECT RD
FairOver: WELLER'S DITCH
0.2 M N ILL 58 P11, Cook, IL
Built 1947 Load: 31.4 t ADT: 15,500
WOLF RD
FairOver: S BR KISHWAUKEE RIV.
3350N 740E, DeKalb, IL
Built 1953 Load: 31.4 t ADT: 175
SHABBONA GROVE RD
FairOver: BR SOMONAUK CREEK
700N 1205E, DeKalb, IL
Built 1961 Load: 31.4 t ADT: 50
IL 38
FairOver: SALT CREEK
0.6 M E OF IL 83, DuPage, IL
Built 1966 Load: 31.4 t ADT: 48,900
YORK RD
FairOver: LAND BRIDGE
0.57 MI N THORNDALE, DuPage, IL
Built 1996 Load: 31.4 t ADT: 20,800
Showing 6,901-6,950 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.