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
US 52
FairOver: GREEN RIVER
SOUTH EDGE OF AMBOY, Lee, IL
Built 1984 Load: 35.0 t ADT: 2,900
TR 79A
FairOver: DEER CREEK
1780 E, 2400 N, Livingston, IL
Built 1955 Load: 35.0 t ADT: 25
TR 91
FairOver: BAKER RUN
1070E,2300N, Livingston, IL
Built 1922 Load: 35.0 t ADT: 50
TR 254
FairOver: CREEK
1025 N, 3100 E, Livingston, IL
Built 1958 Load: 35.0 t ADT: 50
TR 262
FairOver: TRIB E FORK MAZON R
3080 N, 3100 E, Livingston, IL
Built 1980 Load: 35.0 t ADT: 25
TR 10
FairOver: DIAMOND CREEK
2365N,200E, Livingston, IL
Built 1995 Load: 35.0 t ADT: 75
TR 95
FairOver: DEER CREEK
1.5 W 2.5 MI N BEASN, Logan, IL
Built 1973 Load: 35.0 t ADT: 50
NILWOOD WAGGONER R
FairOver: SHEARLES BRANCH
3 MI. E. NILWOOD, Macoupin, IL
Built 1969 Load: 35.0 t ADT: 225
FAI 70 WB
FairOver: SUGAR FORK
3.6 M E ILL 4, Madison, IL
Built 1964 Load: 35.0 t ADT: 13,750
IL 140 & IL 111 WB
FairOver: E Fork of Wood River
1.1mi W of IL 255, Madison, IL
Built 1973 Load: 35.0 t ADT: 15,200
CH61/AIRPORT ROAD
FairOver: LITTLE PIASA CREEK
1.3MI S JERSEY CO LN, Madison, IL
Built 1958 Load: 35.0 t ADT: 650
POWDERMILL/ FAU 90
FairOver: WOOD RIVER
1.5 M S ILL 140, Madison, IL
Built 1952 Load: 35.0 t ADT: 4,350
MSS 7010
FairOver: JUDY BRANCH
600 FT SOUTH OF MAIN, Madison, IL
Built 1987 Load: 35.0 t ADT: 500
IL 161 - FAP 805
FairOver: RACCOON CREEK
3 MI E CENTRALIA, Marion, IL
Built 1974 Load: 35.0 t ADT: 5,150
TR-309
FairOver: TURKEY CREEK
1 MI S JUNCTION CITY, Marion, IL
Built 1991 Load: 35.0 t ADT: 425
US 136
FairOver: ALLENS GROVE DITCH
2 MI W JCT ILL 29, Mason, IL
Built 1962 Load: 35.0 t ADT: 1,150
FAS 956
FairOver: DRY RIDGE DITCH
2.3 MI E OF US 45, Massac, IL
Built 1984 Load: 35.0 t ADT: 200
FAS 482 CH 41
FairOver: BRANCH TIMBER CREEK
3.0MI ENE FUNKSGROVE, McLean, IL
Built 1974 Load: 35.0 t ADT: 225
TR 53
FairOver: CAMP CREEK
NW-21-T15NR1W, Mercer, IL
Built 1969 Load: 35.0 t ADT: 275
CH 7/FAS 604
FairOver: HONEY CREEK
2.5MI S PITTSFIELD, Pike, IL
Built 1989 Load: 35.0 t ADT: 900
I 57 SB & US 51 SB
FairOver: CACHE RIVER
3.8 MI S UNION CO, Pulaski, IL
Built 1964 Load: 35.0 t ADT: 6,900
BL 55 (NB)
FairOver: FANCY CREEK
.9M N SHERMAN INTCHG, Sangamon, IL
Built 1953 Load: 35.0 t ADT: 4,450
FAP 774(IL 128)
FairOver: ROBINSON CREEK
2 MI SW SHELBYVILLE, Shelby, IL
Built 1975 Load: 35.0 t ADT: 2,450
FAIRGROUND ROAD
FairOver: YELLOW CREEK
1.75 MI W ILL RT 26, Stephenson, IL
Built 1973 Load: 35.0 t ADT: 3,350
CH 26
FairOver: LITTLE VERMILION RIV
.2 MI SE GEORGETOWN, Vermilion, IL
Built 1992 Load: 35.0 t ADT: 375
TR 35
FairOver: BR GRAND POINT CR
0.5 MI N IRVINGTON, Washington, IL
Built 1916 Load: 35.0 t ADT: 50
FAI-64 EB
FairOver: EAGLE SLOUGH DITCH
1.75 MI W 45 INT, Wayne, IL
Built 1974 Load: 35.0 t ADT: 5,500
TR-367
FairOver: MARTIN CREEK
1 MI S JEFF, Wayne, IL
Built 1965 Load: 35.0 t ADT: 100
TR-332
FairOver: CREEK
1 MI NW CROSSVILLE, White, IL
Built 1909 Load: 35.0 t ADT: 10
YORKTOWN ROAD
FairOver: BR OF ROCK RIVER
3 MI NE LYNDON, Whiteside, IL
Built 1983 Load: 35.0 t ADT: 100
PAULING RD
FairOver: ROCK CREEK
0.5 MI E OF ILL 50, Will, IL
Built 1977 Load: 35.0 t ADT: 4,600
NEW IL 13 EB
FairOver: BANKSTON FORK
1.7 MI W SALINE CO, Williamson, IL
Built 1994 Load: 35.0 t ADT: 9,000
ILL 251 & W. FR RD
FairOver: N.BRNCH WILLOW CREEK
0.25 S JCT ILL 173, Winnebago, IL
Built 1964 Load: 35.0 t ADT: 17,300
ILL 117
FairOver: MILL CR
3.6 MI S. OF US 24, Woodford, IL
Built 1975 Load: 35.0 t ADT: 6,650
TR 151
FairOver: PANTHER CREEK
2390 EAST 1200 NORTH, Woodford, IL
Built 1978 Load: 35.0 t ADT: 75
CH-12 (FAS 582)
FairOver: LITTLE CREEK
2 MI S LAGRANGE, Brown, IL
Built 1990 Load: 35.3 t ADT: 75
FAS 769
FairOver: MICHAEL CREEK
0.4 M. W. OF MICHAEL, Calhoun, IL
Built 1988 Load: 35.3 t ADT: 250
I-72(EB)
FairOver: CAMP CREEK
1.8 MI E PIATT CO LN, Champaign, IL
Built 1968 Load: 35.3 t ADT: 7,250
I-72(WB)
FairOver: CAMP CREEK
1.8 MI E PIATT CO LN, Champaign, IL
Built 1968 Load: 35.3 t ADT: 7,250
TR 131
FairOver: STREAM
1 MI SE OF ROYAL, Champaign, IL
Built 1974 Load: 35.3 t ADT: 50
US 40(FAS 1707)
FairOver: STREAM
NE EDGE CASEY, Clark, IL
Built 1955 Load: 35.3 t ADT: 3,400
OLD US 40(SBI 11)
FairOver: LITTLE CREEK
.9 MI E MARTINSVILLE, Clark, IL
Built 1986 Load: 35.3 t ADT: 500
FAS 2703(KIN-LOU)
FairOver: SUTTON CREEK
2.5 MI E MARION CL, Clay, IL
Built 1938 Load: 35.3 t ADT: 500
US 30 (LINCOLN HWY
FairOver: DEER CREEK
0.1 M W IL 394, Cook, IL
Built 1926 Load: 35.3 t ADT: 19,300
WILLOW SPRINGS RD
FairOver: S&S&I&MCANALS,DPL RV
0.1 M N IL 171, Cook, IL
Built 1976 Load: 35.3 t ADT: 19,000
OAKTON ST
FairOver: N BR CHICAGO RIVER
0.5 M E IL 43, Cook, IL
Built 1928 Load: 35.3 t ADT: 27,300
IL 72 (HIGGINS RD
FairOver: WILLOW CREEK
0.2 M S OF US 45, Cook, IL
Built 1984 Load: 35.3 t ADT: 16,500
KEDZIE AVE
FairOver: N.E.RR CORP.
0.5M.S.OF 135TH ST., Cook, IL
Built 1989 Load: 35.3 t ADT: 10,700
CAMP MCDONALD RD
FairOver: MCDONALD CREEK
.25 M.W. WOLF RD, Cook, IL
Built 1994 Load: 35.3 t ADT: 6,050
I-90 SKYWAY
FairOver: CONRAIL RR
0.19 M NW 100TH, Cook, IL
Built 1958 Load: 35.3 t ADT: 28,700
Showing 10,801-10,850 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.