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
TR 292
FairOver: BEAR CRK.
3W 2N CARLINVILLE, Macoupin, IL
Built 1955 Load: 27.2 t ADT: 125
CH 10
FairOver: ASH GROVE DITCH
4.5 MI NW OF SAN JOS, Mason, IL
Built 1976 Load: 27.2 t ADT: 1,650
TR 82
FairOver: MASON-TAZEWELL DITCH
1 MI W TOPEKA, Mason, IL
Built 1970 Load: 27.2 t ADT: 75
TR 242
FairOver: ALLENS GROVE DITCH
0.48 mi S US 136, Mason, IL
Built 1972 Load: 27.2 t ADT: 50
TR 257
FairOver: KINGS MILL CREEK
1.2 MI NW TWIN GROVE, McLean, IL
Built 1971 Load: 27.2 t ADT: 100
TR 589
FairOver: PRAIRIE CREEK
2.5 MI SE MCLEAN, McLean, IL
Built 1973 Load: 27.2 t ADT: 50
FAS 214-CH 13
FairOver: EDWARDS RIVER
W.CTR-11-T14NR4W, Mercer, IL
Built 1968 Load: 27.2 t ADT: 250
TR-79
FairOver: Br Macoupin Creek
2.8 MI SW WAGGONER, Montgomery, IL
Built 1952 Load: 27.2 t ADT: 75
HOLCOMB RD
FairOver: STILLMAN CREEK
3 MI S STILLMAN VAL., Ogle, IL
Built 1967 Load: 27.2 t ADT: 225
BROOKVILLE ROAD
FairOver: BR LEAF RIVER
5.5 M W OF FORRESTON, Ogle, IL
Built 1983 Load: 27.2 t ADT: 50
EB I-74 & RAMP
FairOver: DRY RUN CR TRB FLUME
NW-5-T8NR8E, Peoria, IL
Built 1963 Load: 27.2 t ADT: 21,900
ILL 159
FairOver: FIRST BLACK CREEK
0.5 M N Red Bud, Randolph, IL
Built 1928 Load: 27.2 t ADT: 4,600
PEORIA RD. / BL 55
FairOver: SANGAMON R OVERFLOW
.7 M N DIRKSEN PKWY., Sangamon, IL
Built 1988 Load: 27.2 t ADT: 13,200
TR 45 (7N)
FairOver: CANTRALL CREEK
2.0 S CANTRALL, Sangamon, IL
Built 1962 Load: 27.2 t ADT: 50
BAILEYVILLE RD.
FairOver: YELLOW CREEK
1 MI. S. FREEPORT, Stephenson, IL
Built 1937 Load: 27.2 t ADT: 2,000
SO STONE CHURCH RO
FairOver: BR. OF PLUM RIVER
2.25 MI SO OF LORAN, Stephenson, IL
Built 1971 Load: 27.2 t ADT: 150
TR 89
FairOver: CLEAR CREEK
1.2 MI W OLD US 51, Union, IL
Built 1985 Load: 27.2 t ADT: 125
FAS 499(CH 23)
FairOver: STREAM
1 MI E OF GEORGETOWN, Vermilion, IL
Built 1948 Load: 27.2 t ADT: 1,650
TR-82
FairOver: FORDICE CREEK
6 MI S LANCASTER, Wabash, IL
Built 1909 Load: 27.2 t ADT: 50
BURNS RD
FairOver: DRAINAGE DITCH
3 MI N OF ERIE, Whiteside, IL
Built 1959 Load: 27.2 t ADT: 250
YALE BRIDGE RD
FairOver: RANDALLS CREEK
0.3 M E ANDERSON RD, Winnebago, IL
Built 1983 Load: 27.2 t ADT: 200
CEDAR ST
FairOver: KENT CREEK
0.41 M W OF MAIN, Winnebago, IL
Built 1985 Load: 27.2 t ADT: 1,500
I-90 S B
FairOver: STONEBRIDGE TRAIL
1 MI E OF ROSCOE, Winnebago, IL
Built 1958 Load: 27.2 t ADT: 28,550
CH 33
FairOver: UNAMED CR
4.07 MI S OF MOMENCE, Kankakee, IL
Built 1961 Load: 27.4 t ADT: 250
TR 80
FairOver: KISER CR TRIBUTARY
.5 MI NE NEW CANTON, Pike, IL
Built 1965 Load: 27.4 t ADT: 150
TR 62
FairOver: DORRIS CREEK
2.10M NE OLD RIPLEY, Bond, IL
Built 1962 Load: 27.5 t ADT: 150
TR 94
FairOver: STREAM
3.5 MI W CHAMPAIGN, Champaign, IL
Built 1973 Load: 27.5 t ADT: 1,400
TR 268
FairOver: S. FORK LAKE FORK
3MI N PANA, Christian, IL
Built 1967 Load: 27.5 t ADT: 20
TR 295
FairOver: S. FORK LAKE FORK
2MI NE PANA, Christian, IL
Built 1967 Load: 27.5 t ADT: 20
FAS-719
FairOver: LITTE WABASH RIVER
4 MI E IOLA, Clay, IL
Built 1957 Load: 27.5 t ADT: 275
IL 43 (HARLEM AVE
FairOver: DRAINAGE DTCH
1.0 M S OF I-80, Cook, IL
Built 1959 Load: 27.5 t ADT: 29,400
LAKE SHORE DRIVE
FairOver: DIVERSEY HARBOR INLT
2800 N & 500 E, Cook, IL
Built 1940 Load: 27.5 t ADT: 112,700
LaSalle Dr
FairOver: SHARED USE PATH
1677 N 8 W, Cook, IL
Built 1938 Load: 27.5 t ADT: 21,500
TR-262
FairOver: SUGAR CREEK
2 MI SE TRIMBLE, Crawford, IL
Built 1909 Load: 27.5 t ADT: 150
PLANK ROAD
FairOver: COON CREEK
2800N 1750E, DeKalb, IL
Built 1941 Load: 27.5 t ADT: 7,300
S MALTA RD
FairOver: E BR KILLBUCK CREEK
2000N 120E, DeKalb, IL
Built 1955 Load: 27.5 t ADT: 450
CHASE ROAD/TR196A
FairOver: UNION DITCH NO 1
1890N 1500E, DeKalb, IL
Built 1932 Load: 27.5 t ADT: 25
PRESERVE RD
FairOver: SOMONAUK CREEK
900N 1165E, DeKalb, IL
Built 1951 Load: 27.5 t ADT: 50
JOHNNY RUN ROAD
FairOver: JOHNNY RUN
0.1 MI N GOODFARM RD, Grundy, IL
Built 1962 Load: 27.5 t ADT: 375
TR 239
FairOver: RAILROAD CREEK
2.0 SE HAMILTON, Hancock, IL
Built 1980 Load: 27.5 t ADT: 75
TR 180
FairOver: WHISKEY CREEK
N EDGE CLAYTONVILLE, Iroquois, IL
Built 1968 Load: 27.5 t ADT: 10
TR 275 A
FairOver: DRAINAGE DITCH
1 MI N .2 W MILFORD, Iroquois, IL
Built 1971 Load: 27.5 t ADT: 75
FAS 748
FairOver: PIASA CREEK
4.3 M W BRIGHTON, Jersey, IL
Built 1977 Load: 27.5 t ADT: 1,050
TOWNSHIP ROAD NO 3
FairOver: CLEAR CREEK
3 MILES SW WARREN, Jo Daviess, IL
Built 1969 Load: 27.5 t ADT: 50
TOWNSHIP ROAD NO 1
FairOver: HELLS BRANCH CREEK
6 MI SW APPLE RIVER, Jo Daviess, IL
Built 1971 Load: 27.5 t ADT: 225
TOWNSHIP RD NO 288
FairOver: YELLOW CREEK
6 MI SO OF NORA, Jo Daviess, IL
Built 1958 Load: 27.5 t ADT: 100
TR 198
FairOver: DRAINAGE DITCH
6.5 MI NO. ST. ANNE, Kankakee, IL
Built 1910 Load: 27.5 t ADT: 75
GROVE RD (CULVERT)
FairOver: NORTH MORGAN CREEK
1.2 MI S OF ILL 71, Kendall, IL
Built 1955 Load: 27.5 t ADT: 3,600
LAKE COOK ROAD
FairOver: W F N BR CHICAGO RIV
0.1 EAST OF PINE ST, Lake, IL
Built 1989 Load: 27.5 t ADT: 29,800
TR-2
FairOver: Reddick Run
0.97 MI S of CH 25, Livingston, IL
Built 1969 Load: 27.5 t ADT: 75
Showing 6,251-6,300 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.