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
SANTA FE ROAD
FairOver: AT&SF RR (004587E)
NW1/4 16-HALLOCK TWP, Peoria, IL
Built 1981 Load: 26.9 t ADT: 225
FAS 863
FairOver: ROCKCASTLE CREEK
863 OVER ROCKCASTLE, Randolph, IL
Built 1948 Load: 26.9 t ADT: 1,750
TR 347 10.25S
FairOver: SOUTH LICK CREEK
1.5 MI SE OF LOAMI, Sangamon, IL
Built 1962 Load: 26.9 t ADT: 75
TR 42
FairOver: SPRING CREEK
1.0 N BERLIN, Sangamon, IL
Built 1973 Load: 26.9 t ADT: 75
ORANGEVILLE RD.
FairOver: UNNAMED STREAM
0.5 MI E MCCONNELL, Stephenson, IL
Built 1958 Load: 26.9 t ADT: 525
FAS 468 - CH 12
FairOver: STREAM
CTR-22-T22NR2W, Tazewell, IL
Built 1948 Load: 26.9 t ADT: 600
TR 180
FairOver: STREAM
5 MI SW ROSSVILLE, Vermilion, IL
Built 1970 Load: 26.9 t ADT: 50
TR 121
FairOver: STREAM
3 MI S ARMSTRONG, Vermilion, IL
Built 1969 Load: 26.9 t ADT: 50
FAS-815
FairOver: LITTLE WABASH
6 MI W GRAYVILLE, White, IL
Built 1962 Load: 26.9 t ADT: 125
FAS-815
FairOver: STINKING CREEK
5.75 MI W GRAYVILLE, White, IL
Built 1962 Load: 26.9 t ADT: 125
BURNS RD
FairOver: MINERAL SPRINGS CRK.
3 MI N OF ERIE, Whiteside, IL
Built 1959 Load: 26.9 t ADT: 250
ALBANY RD. (FAS122
FairOver: STREAM
4.5 MI NW OF ERIE, Whiteside, IL
Built 1950 Load: 26.9 t ADT: 800
CREAMERY ROAD
FairOver: BR OF CATTAIL CREEK
3 MI NW MORRISON, Whiteside, IL
Built 1982 Load: 26.9 t ADT: 50
US 52
FairOver: FORKED CREEK
1.29 M W OF US 45, Will, IL
Built 1985 Load: 26.9 t ADT: 3,750
I- 55 SB
FairOver: RR - BNSF
5.7 M S OF US 6, Will, IL
Built 1993 Load: 26.9 t ADT: 24,700
CHANNAHON-MINOOKA
FairOver: DUPAGE RIVER
1.4 MI NW CHANNAHON, Will, IL
Built 1947 Load: 26.9 t ADT: 4,900
BALLOU RD
FairOver: FORKED CR
5.7M E ILL 102, Will, IL
Built 1983 Load: 26.9 t ADT: 350
HARRISON ROAD
FairOver: SUGAR RIVER
0.6 MI NORTH RT 75, Winnebago, IL
Built 1922 Load: 26.9 t ADT: 350
11TH ST. (IL251)
FairOver: S.E. DRAINAGE
.35 MI. S HARRISON, Winnebago, IL
Built 1964 Load: 26.9 t ADT: 16,100
FAS 1471 CH 17
FairOver: WOLF CREEK
0.5 MI E KAPPA, Woodford, IL
Built 1962 Load: 26.9 t ADT: 750
TR 19
FairOver: WILLIAMS CREEK
2 MI N LAPRAIRIE, Adams, IL
Built 1996 Load: 27.2 t ADT: 50
FAI 70 FR RD 29.27
FairOver: Trib to Sugar Creek
1.25M N PIERRON, Bond, IL
Built 1965 Load: 27.2 t ADT: 575
CH 6/FAS 777
FairOver: DRY BRANCH CREEK
1 M N WOBURN, Bond, IL
Built 1905 Load: 27.2 t ADT: 150
TR 41
FairOver: DRY BRANCHCREEK
6.25 M NO SMITHBORO, Bond, IL
Built 1968 Load: 27.2 t ADT: 75
MEYERS RD.
FairOver: E. FORK PLUM RIVER
4.5 MI N MT CARROLL, Carroll, IL
Built 1965 Load: 27.2 t ADT: 50
TR 312
FairOver: STREAM
3.2 MI SW OGDEN, Champaign, IL
Built 1964 Load: 27.2 t ADT: 200
CH 2 - FAS 556
FairOver: MOSQUITO CREEK
3.0 MI NE MT AUBURN, Christian, IL
Built 1961 Load: 27.2 t ADT: 650
FAP-828 (CC-MONT B
FairOver: COTTONWOOD CREEK
4 MI S EFFINGHAM C L, Clay, IL
Built 1957 Load: 27.2 t ADT: 1,250
TR 149B
FairOver: LAKE BRANCH
.5 MI E AVISTON, Clinton, IL
Built 1965 Load: 27.2 t ADT: 300
I-57 (NB)
FairOver: RILEY CREEK
N IL 16, Coles, IL
Built 1965 Load: 27.2 t ADT: 10,500
I-57 (SB)
FairOver: RILEY CREEK
N IL 16, Coles, IL
Built 1965 Load: 27.2 t ADT: 10,500
COLUMBUS DR
FairOver: MAIN BR CHICAGO RIV.
347 N & 301 E, Cook, IL
Built 1982 Load: 27.2 t ADT: 18,600
FAP 116(IL 130)
FairOver: HURRICANE CREEK
4.8 MI S OF COLES CO, Cumberland, IL
Built 1982 Load: 27.2 t ADT: 2,500
IL 54 (FAP 71)
FairOver: SALT CREEK
2 MI E KENNEY, De Witt, IL
Built 1937 Load: 27.2 t ADT: 1,100
IRENE RD
FairOver: TRIMBLE RUN
3500N 240E, DeKalb, IL
Built 1955 Load: 27.2 t ADT: 525
FAP 323(US 36)
FairOver: HAYES BRANCH DITCH
1.5 MI E OF TUSCOLA, Douglas, IL
Built 1958 Load: 27.2 t ADT: 4,950
TR 138 A
FairOver: SHILOH DR DITCH #3
4 M W EDGAR .75 M N, Edgar, IL
Built 1957 Load: 27.2 t ADT: 25
TR 42B - PELLA
FairOver: STREAM
2560N,1200E, Ford, IL
Built 1970 Load: 27.2 t ADT: 75
FAP-849 (ILL-142)
FairOver: STREAM
3.1 MI SE JEFF CO LN, Hamilton, IL
Built 1929 Load: 27.2 t ADT: 2,350
TR 9
FairOver: VOEL CREEK
2.2 NE LAHARPE, Hancock, IL
Built 1952 Load: 27.2 t ADT: 75
FAS 1420 - CH 6
FairOver: WOLF CREEK
W.CTR-11-T9NR5W, Henderson, IL
Built 1925 Load: 27.2 t ADT: 375
FAI-57 SB
FairOver: SPRING CREEK
2.41 MI S ONARGA INT, Iroquois, IL
Built 1968 Load: 27.2 t ADT: 8,750
CH 5 (FAS 917)
FairOver: TOWN CREEK
SW CORN SEC 12-9-3, Jackson, IL
Built 1955 Load: 27.2 t ADT: 1,400
TOWNSHIP RD NO 144
FairOver: LITTLE RUSH CREEK
4 MI. E. OF HANOVER, Jo Daviess, IL
Built 1964 Load: 27.2 t ADT: 50
SCOTT ROAD
FairOver: BLACKBERRY CREEK
2.0 MI N SUGAR GROVE, Kane, IL
Built 1967 Load: 27.2 t ADT: 1,000
TR 263
FairOver: SPOON RIVER
NE-23-TIONR3E, Knox, IL
Built 1986 Load: 27.2 t ADT: 50
ILL 71
FairOver: STREAM
2.93 MI SW OF US 52, LaSalle, IL
Built 1942 Load: 27.2 t ADT: 5,250
FAS270 CH19
FairOver: LITTLE VERMILION
N 4250,E 325, LaSalle, IL
Built 1950 Load: 27.2 t ADT: 1,100
TR 282
FairOver: COVEL CREEK
N 2501 E 1650, LaSalle, IL
Built 1965 Load: 27.2 t ADT: 500
TR 99
FairOver: FELKY SLOUGH
2405 E, 2200 N, Livingston, IL
Built 1960 Load: 27.2 t ADT: 100
Showing 6,201-6,250 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.