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 51 (SB) (FAP 32
FairOver: NORTH FORK CREEK
.5 MI NW OF MAROA, Macon, IL
Built 1985 Load: 42.4 t ADT: 8,950
US 51 (NB) FAP 32
FairOver: NORTH FORK CREEK
.5 MI NW OF MAROA, Macon, IL
Built 1985 Load: 42.4 t ADT: 8,950
FAP 323(US 36)
FairOver: STEVENS CREEK
W OF DECATUR, Macon, IL
Built 1998 Load: 42.4 t ADT: 7,250
I-57 NB
FairOver: UPRR
3.5 MI S FAYETTE C L, Marion, IL
Built 1970 Load: 42.4 t ADT: 9,050
I-57 SB
FairOver: UPRR
3.5 MI S FAYETTE C L, Marion, IL
Built 1969 Load: 42.4 t ADT: 9,050
IL 336
FairOver: WILDLIFE CROSSING
3.75MI N of US 136, McDonough, IL
Built 2015 Load: 42.4 t ADT: 1,600
DEEP CUT ROAD
FairOver: UNION PACIFIC RR
.7M N OF NELSON RD, McHenry, IL
Built 2004 Load: 42.4 t ADT: 100
YATES ROAD
FairOver: LAWRENCE CREEK
.8 MI W OF US-14, McHenry, IL
Built 2001 Load: 42.4 t ADT: 125
ILL 100
FairOver: SPRING RUN
1.7MI S JCT 104, Morgan, IL
Built 1992 Load: 42.4 t ADT: 1,300
IL 8
FairOver: UP RR
POTTSTOWN, Peoria, IL
Built 2000 Load: 42.4 t ADT: 3,200
CO HWY 4
FairOver: GALUM CREEK
5 MI W ILL 13, Perry, IL
Built 1964 Load: 42.4 t ADT: 200
ILL 105(FAP 741)
FairOver: CAMP CREEK
N EDGE MONTICELLO, Piatt, IL
Built 1977 Load: 42.4 t ADT: 6,000
I-72/US 36 (WB)
FairOver: THE SNY SLOUGH
2M SW I-172, Pike, IL
Built 1998 Load: 42.4 t ADT: 7,250
TR-179
FairOver: BAY CREEK TRIBUTARY
6.0 MI N PITTSFIELD, Pike, IL
Built 2001 Load: 42.4 t ADT: 25
ILL 146
FairOver: ROOT LICK BRANCH
2.4 MI E OF ILL 145, Pope, IL
Built 1929 Load: 42.4 t ADT: 1,250
TR 2 A
FairOver: SANDY CREEK
140N, 1600E, Putnam, IL
Built 1940 Load: 42.4 t ADT: 50
IL5-JOHN DEERE EXW
FairOver: STREAM
.4MI E 7TH ST MOLINE, Rock Island, IL
Built 1987 Load: 42.4 t ADT: 26,800
US 51 (FAP 322)
FairOver: LONG GROVE CR.
.5 MI N OF MOWEAQUA, Shelby, IL
Built 2002 Load: 42.4 t ADT: 4,800
US 51 (FAP 322)
FairOver: LONG GROVE CR.
.5 MI N OF MOWEAQUA, Shelby, IL
Built 2002 Load: 42.4 t ADT: 4,800
IL 1 US 150 (FAP 3
FairOver: VERMILION RIVER
IN DANVILLE, Vermilion, IL
Built 1957 Load: 42.4 t ADT: 23,100
SB US 67
FairOver: BIG NEGRO CREEK
3 MI S OF IL116, Warren, IL
Built 1996 Load: 42.4 t ADT: 4,900
ILL 127
FairOver: OVERFLOW CROOKED CR
1.8 M S IL 161, Washington, IL
Built 1934 Load: 42.4 t ADT: 2,750
I-88 EB
FairOver: HENNEPIN CANAL FEEDR
1 MI S OF ROCK FALLS, Whiteside, IL
Built 1972 Load: 42.4 t ADT: 6,850
I-88 WB
FairOver: HENNEPIN CANAL FEEDR
1 MI S OF ROCK FALLS, Whiteside, IL
Built 1972 Load: 42.4 t ADT: 6,850
ILL 166
FairOver: SUGAR CREEK
AT ECL CREAL SPRINGS, Williamson, IL
Built 1933 Load: 42.4 t ADT: 1,400
BELTLINE RD
FairOver: N CHANNEL ROCK RIVER
.04 MI SOUTH IL 2, Winnebago, IL
Built 1986 Load: 42.4 t ADT: 10,900
IL 251 W. FR. RD.
FairOver: MC DONALD CREEK
2.0 MI. N. OF IL 173, Winnebago, IL
Built 1992 Load: 42.4 t ADT: 1,350
CENTER RD
FairOver: N. BR. OTTER CREEK
0.5 MI N NORTH ST, Winnebago, IL
Built 1990 Load: 42.4 t ADT: 700
I-39/US 51 SB
FairOver: E BR PANTHER CR
1.9 MI N US 24, Woodford, IL
Built 1989 Load: 42.4 t ADT: 8,100
I-39/US 51 NB
FairOver: E BR PANTHER CR
1.9 MI N OF US 24, Woodford, IL
Built 1989 Load: 42.4 t ADT: 8,100
CH 16(FAS 526)
FairOver: E BR EMBARRAS RIVER
2 MI E OF BONGARD, Champaign, IL
Built 1982 Load: 42.8 t ADT: 525
US 14 (CALDWELL AV
FairOver: N BR CHICAGO RIVER
0.8 M SE IL 43, Cook, IL
Built 1935 Load: 42.8 t ADT: 13,400
LAKE COOK RD
FairOver: W.C.RR.(SOO LINE)
1 M W MILW AV P25, Cook, IL
Built 1979 Load: 42.8 t ADT: 29,700
I-70 (WB)
FairOver: EMBARRAS RIVER
12 MI E EFF CO LINE, Cumberland, IL
Built 1969 Load: 42.8 t ADT: 11,550
I-70 (EB)
FairOver: EMBARRAS RIVER
12 MI E EFF CO LINE, Cumberland, IL
Built 1969 Load: 42.8 t ADT: 11,550
CH-11 SCHNIEDER RD
FairOver: FIRST SALT CREEK
1 MI E TEUTOPOLIS, Effingham, IL
Built 1967 Load: 42.8 t ADT: 350
FAI-70 EB
FairOver: UNION PACIFIC RR
0.5 MI E ST ELMO, Fayette, IL
Built 1962 Load: 42.8 t ADT: 11,950
FAI 70 WB
FairOver: UNION PACIFIC RR
0.5 MI E ST ELMO, Fayette, IL
Built 1963 Load: 42.8 t ADT: 11,950
ILL 54
FairOver: DRAIN DITCH
1.34 MI NE ILL 115, Ford, IL
Built 1948 Load: 42.8 t ADT: 1,000
TR-105 (Spring Rd)
FairOver: MAZON RIVER
.3 MI E CAMPBELL RD, Grundy, IL
Built 1910 Load: 42.8 t ADT: 100
FAP-849 (ILL-142)
FairOver: OPOSSUM CREEK
9.9 MI SE JEFF CO LN, Hamilton, IL
Built 1996 Load: 42.8 t ADT: 2,700
FAP-776 (ILL-242)
FairOver: SHELTON CREEK
1.4 MI S WAYNE CO LN, Hamilton, IL
Built 2010 Load: 42.8 t ADT: 1,250
ILL RT 84
FairOver: GREEN RIVER
S EDGE COLONA, Henry, IL
Built 1936 Load: 42.8 t ADT: 4,100
BEAVERVILLE RD CH
FairOver: PIKE CREEK
1.52 MI N OF US 52, Iroquois, IL
Built 1933 Load: 42.8 t ADT: 375
ILL 49
FairOver: PIGEON CR
4.4 MI N ILL 9, Iroquois, IL
Built 1974 Load: 42.8 t ADT: 1,050
US 52 & 45
FairOver: MINNIE CREEK
1.2 M S OF I-57, Kankakee, IL
Built 1971 Load: 42.8 t ADT: 5,750
IL 22
FairOver: INDIAN CREEK
0.2 M E OF IL 21, Lake, IL
Built 1982 Load: 42.8 t ADT: 20,600
US 6 W OF MARSEILL
FairOver: LONG CREEK
4.51 MI E OF ILL 71, LaSalle, IL
Built 1958 Load: 42.8 t ADT: 3,850
ILL 18 WB
FairOver: VERMILION RIVER
0.10 MI W OF ILL 23, LaSalle, IL
Built 1988 Load: 42.8 t ADT: 4,200
CO HWY 23 FAS-1347
FairOver: FIVE MILE CREEK
2.50MI E OF SAUNEMIN, Livingston, IL
Built 1962 Load: 42.8 t ADT: 75
Showing 12,501-12,550 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.