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 281
FairOver: TOWN BRANCH
3.7 MI NE RIPLEY, Schuyler, IL
Built 1981 Load: 35.6 t ADT: 50
FAP 762(IL 32)
FairOver: SAND CREEK
2 MI N OF WINDSOR, Shelby, IL
Built 1997 Load: 35.6 t ADT: 2,700
FAS 1650(TR 330)
FairOver: SAND CREEK
4.4 MI NW WINDSOR, Shelby, IL
Built 1969 Load: 35.6 t ADT: 75
I-55/70 & US 40 WB
FairOver: DRAINAGE CANAL
1/2 mi E of E St Lou, St. Clair, IL
Built 1960 Load: 35.6 t ADT: 33,650
I-64 EB
FairOver: TRRA
0.3mi W of 25th St., St. Clair, IL
Built 1968 Load: 35.6 t ADT: 37,900
I-64 WB
FairOver: TRRA
0.3mi W of 25th St., St. Clair, IL
Built 1968 Load: 35.6 t ADT: 37,900
TR 34 B
FairOver: STONY CREEK
2.8 MI N OF FITHIAN, Vermilion, IL
Built 1980 Load: 35.6 t ADT: 25
ILL 15 & US 51
FairOver: Little Muddy River
0.6 MI W C L ASHLEY, Washington, IL
Built 1921 Load: 35.6 t ADT: 2,300
FAI 64 EB
FairOver: BEAVER POND CREEK
4 MI W ILL 127, Washington, IL
Built 1969 Load: 35.6 t ADT: 14,650
FAI 64 WB
FairOver: BEAVER POND CREEK
4 MI W ILL 127, Washington, IL
Built 1969 Load: 35.6 t ADT: 14,650
IL 177/160
FairOver: KASKASKIA OVERFLOW
3.7M W OF OKAWVILLE, Washington, IL
Built 1997 Load: 35.6 t ADT: 1,750
TR 2
FairOver: LITTLE MUDDY CREEK
1 MILE S ST LIBORY, Washington, IL
Built 1971 Load: 35.6 t ADT: 175
TR-391
FairOver: SKILLET FORK
5 MI N KEENES, Wayne, IL
Built 1978 Load: 35.6 t ADT: 125
I- 55 NB TO IL 113
FairOver: CLAY POOL CREEK
0.3 M NE OF I-55, Will, IL
Built 1960 Load: 35.6 t ADT: 700
ILL 148
FairOver: POND CREEK
1.1 MI S FRANKLIN CO, Williamson, IL
Built 1931 Load: 35.6 t ADT: 3,650
ILL 70
FairOver: S BRANCH OTTER CR
0.8 MI NORTH RT 75, Winnebago, IL
Built 2010 Load: 35.6 t ADT: 2,700
WINSLOW ROAD
FairOver: SUGAR RIVER
2 MI W OF SHIRLAND, Winnebago, IL
Built 1985 Load: 35.6 t ADT: 150
ROCKTON RD
FairOver: RACCOON CREEK
2 MI W OF ROCKTON, Winnebago, IL
Built 1989 Load: 35.6 t ADT: 2,250
FRITZ RD
FairOver: UNNAMED CREEK
1 MI E RT 70, Winnebago, IL
Built 1962 Load: 35.6 t ADT: 550
FAS 358 CH1
FairOver: SNAG CREEK
0.83 MI SE WASHBURN, Woodford, IL
Built 1980 Load: 35.6 t ADT: 575
ILL 3
FairOver: CACHE RIVER
2.8 MI S ILL 127, Alexander, IL
Built 1948 Load: 36.0 t ADT: 1,950
ILL 143
FairOver: LOCUST FORK
PIERRON, Bond, IL
Built 1926 Load: 36.0 t ADT: 2,200
IL 99
FairOver: N FORK SHELBY CREEK
3.6M N US24-MT STRLG, Brown, IL
Built 1931 Load: 36.0 t ADT: 750
FAS 755
FairOver: GESKE HOLLOW CREEK
5.5 MI S OF HAMBURG, Calhoun, IL
Built 1958 Load: 36.0 t ADT: 300
TR-83 E Townline R
FairOver: STRADDLE CREEK
1.0 M W OF LANARK, Carroll, IL
Built 1985 Load: 36.0 t ADT: 100
CH 24
FairOver: SALINE BRANCH DRAIN
1.5 MI N OF MAYVIEW, Champaign, IL
Built 1936 Load: 36.0 t ADT: 575
MT AUBURN RD
FairOver: BUCKHART CREEK
7.8M N IL29,TAYLORVL, Christian, IL
Built 1991 Load: 36.0 t ADT: 650
OLD US 40
FairOver: N FORK EMBARRAS R
.37 MI W MARTINSVILL, Clark, IL
Built 1986 Load: 36.0 t ADT: 1,300
US 40(FAS 1707)
FairOver: STREAM
EAST OF CASEY, Clark, IL
Built 1955 Load: 36.0 t ADT: 2,750
ILL 161
FairOver: SHOAL CREEK
1.5M E GERMANTOWN, Clinton, IL
Built 1987 Load: 36.0 t ADT: 4,250
US 45 NB (LA GRANG
FairOver: CAL SAG CHANNEL
0.2 M N IL 83, Cook, IL
Built 1967 Load: 36.0 t ADT: 33,800
US 6 (159TH ST)
FairOver: LITTLE CAL RIVER
0.1 M E I-94 BF, Cook, IL
Built 1931 Load: 36.0 t ADT: 21,100
JOLIET RD
FairOver: DES PLAINES RIVER
0.5 M W IL 43, Cook, IL
Built 1900 Load: 36.0 t ADT: 10,550
IL 171 (1ST AVE)
FairOver: SILVER CREEK
0.6 M N LAKE ST, Cook, IL
Built 1934 Load: 36.0 t ADT: 27,400
FOREST AVE
FairOver: DES PLAINES RIVER
0.2 M E 1ST, Cook, IL
Built 1933 Load: 36.0 t ADT: 5,250
IL 171 SB
FairOver: RR - BNSF
1.0 M W OF I-55, Cook, IL
Built 1964 Load: 36.0 t ADT: 40,100
LAKE COOK RD
FairOver: TRIB OF BUFFALO CR
0.7 W ARL HTS P25, Cook, IL
Built 1978 Load: 36.0 t ADT: 39,000
CENTRAL PARK AVE
FairOver: N BR CHICAGO RIVER
5100 N & 3600 W, Cook, IL
Built 1913 Load: 36.0 t ADT: 1,050
LAWRENCE AVE
FairOver: N BR CHICAGO RIV
4800 N. & 2900 W., Cook, IL
Built 1919 Load: 36.0 t ADT: 13,700
I-80 WB
FairOver: GRAND TRUNK RR
0.2 M W OF IL-394, Cook, IL
Built 2006 Load: 36.0 t ADT: 73,500
FAP-781 (IL 33)
FairOver: BENNETT CK
1.25 MI E STOY, Crawford, IL
Built 1993 Load: 36.0 t ADT: 5,900
FAS 695 (CH-2)
FairOver: MAPLE CREEK
2.5 MI W ANNAPOLIS, Crawford, IL
Built 1972 Load: 36.0 t ADT: 375
IL 64 FAP 17
FairOver: OWENS CREEK
5 MI. E. OGLE CO LN, DeKalb, IL
Built 1992 Load: 36.0 t ADT: 4,250
FAU-8354 (US-40)
FairOver: SALT CREEK
0.25 MI E EFFINGHAM, Effingham, IL
Built 1991 Load: 36.0 t ADT: 8,800
ILL 54
FairOver: E BR VERMILION RIVER
2.72 MI S ILL 54-115, Ford, IL
Built 1988 Load: 36.0 t ADT: 1,150
US 24
FairOver: DRAIN. DITCH
1.23 MI W OF ILL 115, Ford, IL
Built 1987 Load: 36.0 t ADT: 2,600
ILL 9 & 47
FairOver: DRUMMER CREEK
0.25 MI S OF IL 9, Ford, IL
Built 1990 Load: 36.0 t ADT: 3,350
US 136
FairOver: LACY DITCH
.25 MI W OF HAVANA, Fulton, IL
Built 1936 Load: 36.0 t ADT: 5,250
US 24
FairOver: DRAINAGE DITCH
1.5 MI SW BANNER, Fulton, IL
Built 1933 Load: 36.0 t ADT: 2,450
FAS 1463-CH 12
FairOver: OTTER CREEK
N1/2-2-T3NR1E, Fulton, IL
Built 1977 Load: 36.0 t ADT: 75
Showing 11,001-11,050 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.