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
COUNTY HIGHWAY 35
FairOver: BR OF COPPERAS CR
5 M SW ILLINOIS CITY, Rock Island, IL
Built 1941 Load: 43.7 t ADT: 100
ILL 34
FairOver: MIDDLE FORK DITCH
2.1 MI N HARRISBURG, Saline, IL
Built 1932 Load: 43.7 t ADT: 2,900
I-55/64 EB CD Q-LI
FairOver: GROUND
PIER D26 TO PIER P14, St. Clair, IL
Built 1969 Load: 43.7 t ADT: 18,100
MEADOWS AVE
FairOver: LITTLE FARM CREEK
US 150 E PEORIA, Tazewell, IL
Built 1998 Load: 43.7 t ADT: 5,950
BOWMAN AV(FAU 7045
FairOver: STONY CREEK
SE SIDE DANVILLE, Vermilion, IL
Built 1950 Load: 43.7 t ADT: 7,150
ILL 15
FairOver: ELKHORN CREEK
0.6 MI E JCT ILL 153, Washington, IL
Built 1933 Load: 43.7 t ADT: 2,050
PERIMETER ROAD
FairOver: PRAIRIE CREEK
0.1 MILE EAST OF SR 53, Will, IL
Built 1959 Load: 43.7 t ADT: 5
I- 55 SB
FairOver: I & M CANAL
1.1 M S OF I-80, Will, IL
Built 1956 Load: 43.7 t ADT: 32,350
I- 80 EB
FairOver: RR - METRA
1.0 M E OF US-45, Will, IL
Built 1966 Load: 43.7 t ADT: 51,450
EXCHANGE ST
FairOver: KLEMME CREEK
0.8 MI W INDIANA LIN, Will, IL
Built 1964 Load: 43.7 t ADT: 15,600
FAS 267 (CH 20)
FairOver: Mole Creek
0.25 MI N CH 14, Woodford, IL
Built 2014 Load: 43.7 t ADT: 150
ILL 127
FairOver: HOGSKIN CREEK
3.2 MI S TAMMS, Alexander, IL
Built 1983 Load: 44.1 t ADT: 450
FAS 946
FairOver: PIGEON ROOST CREEK
OLIVE BRANCH, Alexander, IL
Built 1900 Load: 44.1 t ADT: 350
US 24
FairOver: LAMOINE RIVER
E RIPLEY-SCHUYLER CO, Brown, IL
Built 2011 Load: 44.1 t ADT: 3,050
IL 40
FairOver: ROCK CREEK
2 MI. E. OF CHADWICK, Carroll, IL
Built 1995 Load: 44.1 t ADT: 950
I-70 (WB)
FairOver: CROOKED CREEK
3.5 MI W OF STATE LN, Clark, IL
Built 1968 Load: 44.1 t ADT: 12,450
I-70 (EB)
FairOver: CROOKED CREEK
3.5 MI W STATE LINE, Clark, IL
Built 1968 Load: 44.1 t ADT: 12,450
FAP 832(IL 49)
FairOver: STREAM
6.5 MI S CASEY, Clark, IL
Built 1993 Load: 44.1 t ADT: 725
I-70 (EB)
FairOver: HAWKS CREEK
1 MI W STATE LINE, Clark, IL
Built 2002 Load: 44.1 t ADT: 14,000
I-70 (WB)
FairOver: HAWKS CREEK
1 MI W STATE LINE, Clark, IL
Built 2002 Load: 44.1 t ADT: 14,000
ILL 161
FairOver: WILKEN LAKE
0.5 M E GERMANTOWN, Clinton, IL
Built 1935 Load: 44.1 t ADT: 4,250
IL 127
FairOver: NSRR
POSEY, Clinton, IL
Built 1936 Load: 44.1 t ADT: 3,550
FAS 676
FairOver: Hurricane Creek
W Edge of Hutton, Coles, IL
Built 2017 Load: 44.1 t ADT: 200
IL 59
FairOver: RR - METRA
0.8 M S US-20, Cook, IL
Built 1993 Load: 44.1 t ADT: 36,700
IL 130(FAP 808)
FairOver: EMBARRAS RIVER
2 MI S VILLA GROVE, Douglas, IL
Built 1935 Load: 44.1 t ADT: 2,850
IL 83
FairOver: RR - BNSF
0.7 M N OF IL 171, DuPage, IL
Built 1997 Load: 44.1 t ADT: 24,600
FAP-823 (ILL-15)
FairOver: TRIB BUTTER CREEK
.25 MI W OF ALBION, Edwards, IL
Built 1976 Load: 44.1 t ADT: 3,650
FAS 2701 (ILL-37)
FairOver: WEST SALT CREEK
.5 MI E WATSON, Effingham, IL
Built 1984 Load: 44.1 t ADT: 2,900
FAP 95(ILL 33)
FairOver: DIETERICH CREEK
ECL DIETERICH, Effingham, IL
Built 2001 Load: 44.1 t ADT: 6,350
FAP-322 (US-51)
FairOver: RAMSEY CREEK
8.5 MI S SHELBY C L, Fayette, IL
Built 1954 Load: 44.1 t ADT: 3,600
FAS 1751(US-40)
FairOver: LICK CREEK
1.5 MI E BOND CO LN, Fayette, IL
Built 1943 Load: 44.1 t ADT: 1,400
ILL 1
FairOver: N MARTINTON DT NO 2
2.20 MI N OF US 52, Iroquois, IL
Built 1955 Load: 44.1 t ADT: 2,250
BEAVERVILLE RD CH
FairOver: BEAVER DITCH
2.40 MI N OF US 52, Iroquois, IL
Built 1933 Load: 44.1 t ADT: 400
TR 250
FairOver: PIKE CREEK
0.5S,1.5W MARTINTON, Iroquois, IL
Built 1983 Load: 44.1 t ADT: 50
FAU-8715(OLD-15)
FairOver: CASEY FORK
.2 MI NE ILL-15, Jefferson, IL
Built 1995 Load: 44.1 t ADT: 5,700
US 34
FairOver: FOX RIVER
US 34 & FOX RIVER, Kendall, IL
Built 1993 Load: 44.1 t ADT: 16,300
WB I-74
FairOver: BNSF RR (004648T)
N GALESBURG INTERCH, Knox, IL
Built 1963 Load: 44.1 t ADT: 8,850
PERRY ROAD-FAS 176
FairOver: STEWARD CREEK BRANCH
0.2 MI E OF STEWARD, Lee, IL
Built 1983 Load: 44.1 t ADT: 1,600
US 136
FairOver: PRAIRIE CREEK DITCH
1.6M E 1ST-SAN JOSE, Logan, IL
Built 1937 Load: 44.1 t ADT: 2,300
IL 31
FairOver: NIPPERSINK CREEK
1.5 M S OF US 12, McHenry, IL
Built 1927 Load: 44.1 t ADT: 7,600
I-55 SB
FairOver: MONEY CREEK
1.5 MI NE OF TOWANDA, McLean, IL
Built 1973 Load: 44.1 t ADT: 11,900
I-55 NB
FairOver: MONEY CREEK
1.5 MI NE OF TOWANDA, McLean, IL
Built 1973 Load: 44.1 t ADT: 11,900
COLLEGE AVE FAU 63
FairOver: PHEASANT CREEK
1.5 NNW 51 & 150, McLean, IL
Built 1981 Load: 44.1 t ADT: 12,900
I-55 (NB)
FairOver: BURLINGTN NORTHRN RR
1.8M N IL 16 INT., Montgomery, IL
Built 1973 Load: 44.1 t ADT: 13,250
ILL 251
FairOver: KYTE CREEK
0.3 MI S JCT ILL 38, Ogle, IL
Built 1928 Load: 44.1 t ADT: 7,550
EB I-474
FairOver: Abandoned UPRR
.6MI NW Airport Rd, Peoria, IL
Built 1978 Load: 44.1 t ADT: 11,400
WB I-474
FairOver: Abandoned UPRR
.6MI NW Airport Rd, Peoria, IL
Built 1978 Load: 44.1 t ADT: 11,400
ILL 91
FairOver: HARLAN'S CREEK
N EDGE OF DUNLAP, Peoria, IL
Built 1999 Load: 44.1 t ADT: 2,550
I-72 (EB)
FairOver: MCCRANEY CREEK
1.8M E HULL INTCHG, Pike, IL
Built 1988 Load: 44.1 t ADT: 4,700
I-72 (WB)
FairOver: MCCRANEY CREEK
1.8M E HULL INTCHG, Pike, IL
Built 1988 Load: 44.1 t ADT: 4,700
Showing 12,701-12,750 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.