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-211A
FairOver: DRY FORK
3 MI SW CISNE, Wayne, IL
Built 1975 Load: 50.5 t ADT: 125
I-88 EB
FairOver: B.N. R.R. TRACK
1.7 MI W ILL 78, Whiteside, IL
Built 1975 Load: 50.5 t ADT: 6,550
I-88 WB
FairOver: B.N. R.R. TRACK
1.7 MI W ILL 78, Whiteside, IL
Built 1975 Load: 50.5 t ADT: 6,550
BLACK RD
FairOver: STREAM
1 MI E OF FENTON, Whiteside, IL
Built 1920 Load: 50.5 t ADT: 725
MANHATTAN-MONEE RD
FairOver: PRAIRIE CREEK
0.5 M W OF US 45, Will, IL
Built 1992 Load: 50.5 t ADT: 5,150
I-80 WB
FairOver: WEST BUREAU CREEK
2 MI N WYANET, Bureau, IL
Built 1963 Load: 50.9 t ADT: 9,500
I-80 EB
FairOver: WEST BUREAU CREEK
2 MI N WYANET, Bureau, IL
Built 1963 Load: 50.9 t ADT: 9,500
I-57(NB)
FairOver: Canadian National Railwa
.75 MI N OF US 136, Champaign, IL
Built 1968 Load: 50.9 t ADT: 10,550
I-57(SB)
FairOver: Canadian National Railwa
.75 MI N OF US 136, Champaign, IL
Built 1968 Load: 50.9 t ADT: 10,550
FAP 322(US 51)
FairOver: SEWER CREEK
1 MI S OF PANA, Christian, IL
Built 1997 Load: 50.9 t ADT: 3,900
ILL 127
FairOver: N Trb to Flat Branch
4.0 M N CARLYLE, Clinton, IL
Built 1980 Load: 50.9 t ADT: 3,250
IL 16 (FAP 91)
FairOver: EMBARRASS RIVER
2.5 MI E CHARLESTON, Coles, IL
Built 2012 Load: 50.9 t ADT: 5,300
I- 55 EB RMP RYAN
FairOver: DRY LAND
AT I-94, Cook, IL
Built 1964 Load: 50.9 t ADT: 23,300
31ST ST
FairOver: SALT CREEK
1.7 M E US 45, Cook, IL
Built 2001 Load: 50.9 t ADT: 14,300
RANDOLPH ST
FairOver: UNION STA TRKS
150N 430W TO 500W, Cook, IL
Built 1985 Load: 50.9 t ADT: 12,200
IL 53
FairOver: RR - CN
0.9 M N OF IL 64, DuPage, IL
Built 1935 Load: 50.9 t ADT: 24,100
FAI-70
FairOver: SECOND SALT CK
2 MI E N. TRI-LEVEL, Effingham, IL
Built 1960 Load: 50.9 t ADT: 25,800
FAP 873-IL 149
FairOver: PRAIRIE CREEK
2 MI E IL 184, Franklin, IL
Built 1999 Load: 50.9 t ADT: 2,200
ILL 9
FairOver: BIG CREEK
W. EDGE OF CANTON CL, Fulton, IL
Built 1997 Load: 50.9 t ADT: 4,100
IL 9/94
FairOver: CAMP CREEK
JUST E IL 94 S, Hancock, IL
Built 1982 Load: 50.9 t ADT: 1,000
IL 1/FAP 332A
FairOver: Trib to Sugar Creek
1.85 Mi S of US 24, Iroquois, IL
Built 1953 Load: 50.9 t ADT: 2,300
BUFFALO GROVE ROAD
FairOver: INDIAN CREEK
1.5 M N OF ILL 22, Lake, IL
Built 1966 Load: 50.9 t ADT: 600
US RT 6
FairOver: WALBRIDGE CREEK
3.63 MI E OF ILL 71, LaSalle, IL
Built 1958 Load: 50.9 t ADT: 3,850
NB US 67
FairOver: FARMERS FORK
1 MI S OF ILL 9, McDonough, IL
Built 2012 Load: 50.9 t ADT: 6,350
CH 10
FairOver: COFFEE CR
970N, 780E, Putnam, IL
Built 1939 Load: 50.9 t ADT: 225
FAU 9172
FairOver: ENGLE CREEK BRANCH
2.20 MI N US 50, St. Clair, IL
Built 1963 Load: 50.9 t ADT: 4,400
I-57 SB
FairOver: BIG CREEK
2 MI N DONGOLA, Union, IL
Built 2020 Load: 50.9 t ADT: 6,600
ILL 40
FairOver: GREEN RIVER
1 MI S DEER GROVE, Whiteside, IL
Built 1928 Load: 50.9 t ADT: 2,550
I- 80 WB
FairOver: RR - METRA
1.0 M E OF US-45, Will, IL
Built 1966 Load: 50.9 t ADT: 51,450
PECATONICA RD
FairOver: PINK CREEK
.40MI S TRASK BRIDGE, Winnebago, IL
Built 2000 Load: 50.9 t ADT: 1,500
TOWER RD
FairOver: RR - UP
1.9 M E I-94, Cook, IL
Built 1941 Load: 51.2 t ADT: 4,950
I- 55 WB ELEVATED
FairOver: S BR CHICAGO RIVER
1.1 M SW I-94, Cook, IL
Built 1963 Load: 51.2 t ADT: 75,400
DEMPSTER ST
FairOver: N. SHORE CHANNEL
0.2 E KIMBALL, Cook, IL
Built 2003 Load: 51.2 t ADT: 21,300
LEMOYNE ST
FairOver: ADDISON CR
0.14 M S NORTH AVE, Cook, IL
Built 1960 Load: 51.2 t ADT: 600
FAP 828 (IL 121)
FairOver: LONG POINT CREEK
4.4 MI S 45 JCT, Cumberland, IL
Built 2016 Load: 51.2 t ADT: 3,250
ILL 94
FairOver: SMITH CREEK
.25MI N of IL 164, Henderson, IL
Built 1932 Load: 51.2 t ADT: 375
ILL ROUTE 26
FairOver: GREEN RIVER
2.5 MI S AMBOY RD, Lee, IL
Built 2012 Load: 51.2 t ADT: 1,500
WB I-74
FairOver: UP RR (175624A)
.25 MI W PEORIA, Peoria, IL
Built 1965 Load: 51.2 t ADT: 16,250
FAI 74 & 280 EB
FairOver: SHAEFFER CREEK
1 MI W HENRY CO, Rock Island, IL
Built 1959 Load: 51.2 t ADT: 7,500
IL 29 (NB)
FairOver: S FK SANGAMON RIVER
2.4M SE I-55 INTCHG, Sangamon, IL
Built 1963 Load: 51.2 t ADT: 13,500
IL 4
FairOver: PANTHER CREEK
3.1M N IL 104-AUBURN, Sangamon, IL
Built 2002 Load: 51.2 t ADT: 8,950
ILL 26
FairOver: TEN MILE CREEK
N OF ILL 116, Tazewell, IL
Built 2004 Load: 51.2 t ADT: 6,150
ILL 127
FairOver: MIDDLE CREEK
2.9 M N NASHVILLE, Washington, IL
Built 1933 Load: 51.2 t ADT: 10,100
FAP-857 (IL. 14)
FairOver: FOX RIVER
3.3 MI E CROSSVILLE, White, IL
Built 2008 Load: 51.2 t ADT: 250
US 30
FairOver: ROCK CREEK
NW EDGE MORRISON, Whiteside, IL
Built 2010 Load: 51.2 t ADT: 8,200
US 20
FairOver: FULLERS CREEK
.5 MI W OF ILL 2, Winnebago, IL
Built 1964 Load: 51.2 t ADT: 20,400
OLD US 40(SBI 11)
FairOver: TURKEY RUN CREEK
1.5 MI W MARTINSVILL, Clark, IL
Built 1986 Load: 51.5 t ADT: 1,000
ILL 161
FairOver: LAKE CREEK BRANCH
WEST SIDE OF ALBERS, Clinton, IL
Built 1934 Load: 51.5 t ADT: 4,500
US 50
FairOver: KASKASKIA RIVER
AT CARLYLE, Clinton, IL
Built 1978 Load: 51.5 t ADT: 5,850
I-90WB TO NB STONY
FairOver: GROUND
0.06 M N 79TH P7C, Cook, IL
Built 1958 Load: 51.5 t ADT: 4,000
Showing 13,351-13,400 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.