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
IL 26 FAP 615
FairOver: E. BUREAU CREEK
.3 MI. NW OF I-180, Bureau, IL
Built 1994 Load: 46.3 t ADT: 2,350
I-74(EB)
FairOver: Union Pacific Railroad
1.5 MI E ST JOSEPH, Champaign, IL
Built 1959 Load: 46.3 t ADT: 13,200
I-74(WB)
FairOver: Union Pacific Railroad
1.5 MI E ST JOSEPH, Champaign, IL
Built 1959 Load: 46.3 t ADT: 13,200
I- 94 SB EDENS
FairOver: RR - UP ?
1.3 M N IL 58, Cook, IL
Built 1950 Load: 46.3 t ADT: 64,250
I- 94 NB EDENS
FairOver: RR - UP ?
1.3 M N IL 58, Cook, IL
Built 1950 Load: 46.3 t ADT: 64,250
I-70 (WB)
FairOver: COTTONWOOD CREEK
6.5MI E EFF CO LINE, Cumberland, IL
Built 1968 Load: 46.3 t ADT: 11,550
MEDINAH RD
FairOver: SPRING BROOK
0.5 MI N US-20, DuPage, IL
Built 2005 Load: 46.3 t ADT: 5,450
TR-357
FairOver: CONTRARY CREEK
3.75 MI WNW DALE, Hamilton, IL
Built 1973 Load: 46.3 t ADT: 25
FAI 80 EB
FairOver: SPRING CREEK
3.7 MI E JCT ILL 82, Henry, IL
Built 1961 Load: 46.3 t ADT: 8,650
FAI 80 WB
FairOver: SPRING CREEK
3.7 MI E JCT ILL 82, Henry, IL
Built 1961 Load: 46.3 t ADT: 8,650
ILL 71
FairOver: COVEL CR
7.38 MI E OF ILL 178, LaSalle, IL
Built 1981 Load: 46.3 t ADT: 1,650
ILL 23
FairOver: BAKER RUN
4.38 MI N OF I-55, Livingston, IL
Built 1977 Load: 46.3 t ADT: 2,900
FAP 712(IL 48)
FairOver: STREAM
NE EDGE OF DECATUR, Macon, IL
Built 1976 Load: 46.3 t ADT: 7,300
WALLACE DRIVE
FairOver: FOX RIVER SLOUGH
.1 MI W HICKORY NUT, McHenry, IL
Built 2008 Load: 46.3 t ADT: 175
CH 34 (FAU 6381)
FairOver: ICG RAILROAD
SHIRLEY, IL, McLean, IL
Built 1977 Load: 46.3 t ADT: 750
ILL 29
FairOver: IL RIVER TRIBUTARY
.1 MI S MOSSVILLE RD, Peoria, IL
Built 2009 Load: 46.3 t ADT: 11,400
US 24 & ILL9
FairOver: LAMARSH CREEK
WHEELER RD & US 24, Peoria, IL
Built 2011 Load: 46.3 t ADT: 11,200
I-72 EB
FairOver: TRIB MCCRANEY CREEK
2M E HULL INTCHG, Pike, IL
Built 1988 Load: 46.3 t ADT: 4,700
I-72 WB
FairOver: TRIB MCCRANEY CREEK
2M E HULL INTCHG, Pike, IL
Built 1988 Load: 46.3 t ADT: 4,700
FAS 938
FairOver: LIMEKILN SLOUGH
6.5 MI E OF ULLIN, Pulaski, IL
Built 1984 Load: 46.3 t ADT: 1,350
IL 84
FairOver: DRAINAGE DITCH
1.4 MI. S. OF I-80, Rock Island, IL
Built 1996 Load: 46.3 t ADT: 5,500
FAP 325(ILL 16)
FairOver: ROBINSON CREEK
4.25 MI E TOWER HILL, Shelby, IL
Built 1967 Load: 46.3 t ADT: 5,200
US20 FREPORT BYPS
FairOver: PECATONICA RIVER
2.5 MI W OF IL 26, Stephenson, IL
Built 1987 Load: 46.3 t ADT: 6,150
ILL 122
FairOver: SUGAR CREEK
1 MI E OF MINIER, Tazewell, IL
Built 1928 Load: 46.3 t ADT: 1,400
I 64 WB
FairOver: POND CREEK OVFL
0.1MI E WAYNE CO LN, White, IL
Built 1975 Load: 46.3 t ADT: 6,000
US 45
FairOver: PRAIRIE CREEK
5.6 M S OF US 30, Will, IL
Built 1978 Load: 46.3 t ADT: 5,900
RIVER ROAD
FairOver: HAMMEL CREEK
N. OF INT W/ US52, Will, IL
Built 2004 Load: 46.3 t ADT: 10,700
FAS 1901
FairOver: CRAB ORCHARD SPILWAY
4 MI.SW CARTERVILLE, Williamson, IL
Built 1976 Load: 46.3 t ADT: 1,300
IL 2 SB
FairOver: MUD CREEK
0.4 MI S OLD RVR RD, Winnebago, IL
Built 2012 Load: 46.3 t ADT: 11,800
TRASK BRIDGE RD
FairOver: UNNAMED CREEK
0.2 MI E COUNTY LINE, Winnebago, IL
Built 1983 Load: 46.3 t ADT: 850
ILL 26
FairOver: RICHLAND CREEK
10.18 MI S OF ILL 17, Woodford, IL
Built 1992 Load: 46.3 t ADT: 2,550
I-80 EB
FairOver: COAL CREEK
3.81 E/HENRY CO LN, Bureau, IL
Built 1963 Load: 46.7 t ADT: 8,950
I-80 WB
FairOver: COAL CREEK
3.82 E/HENRY CO LN, Bureau, IL
Built 1963 Load: 46.7 t ADT: 8,950
I-57
FairOver: STREAM
MARKET ST, Champaign, IL
Built 1966 Load: 46.7 t ADT: 22,500
127TH ST BURR OAK
FairOver: RR - METRA
0.5 M W I-57, Cook, IL
Built 1957 Load: 46.7 t ADT: 24,200
Hillview-Eldred Rd
FairOver: MACOUPIN CREEK
GREENE CO LINE, Jersey, IL
Built 1957 Load: 46.7 t ADT: 550
IL 25
FairOver: Stearns Road Trail
0.01 M N STERNS RD, Kane, IL
Built 2009 Load: 46.7 t ADT: 14,900
ORCHARD RD
FairOver: Fox River & Omnitrax
0.1 MI N OF IL 71, Kendall, IL
Built 2000 Load: 46.7 t ADT: 13,900
ILL 89
FairOver: SANDY CREEK
3.36 MI S. OF ILL 18, Marshall, IL
Built 2000 Load: 46.7 t ADT: 2,200
I-74 EB
FairOver: KICKAPOO CR
5.93 MI E OF US 51, McLean, IL
Built 1968 Load: 46.7 t ADT: 9,500
ILL 34
FairOver: BLACKMAN CREEK
1 MI SE JCT 34 & 145, Saline, IL
Built 1924 Load: 46.7 t ADT: 2,050
IL 15
FairOver: NSRR, ICRR
.70MI E JCT IL 157, St. Clair, IL
Built 1940 Load: 46.7 t ADT: 28,700
US ROUTE 20 WB
FairOver: PECATONICA RIVER
2.5 MI W IL RTE 26, Stephenson, IL
Built 2011 Load: 46.7 t ADT: 6,150
W.WASHINGTON ST
FairOver: FARM CREEK
1600' S.CAMP ST., Tazewell, IL
Built 1993 Load: 46.7 t ADT: 4,200
ILL 49(FAP 840)
FairOver: TRIB STONY CREEK
3 MI NW OF FITHIAN, Vermilion, IL
Built 1975 Load: 46.7 t ADT: 1,350
400 E
FairOver: PRAIRIE CREEK
3.5 M NE SPRINGERTON, White, IL
Built 2014 Load: 46.7 t ADT: 10
IL 113
FairOver: HORSE CREEK
4.5 M E OF IL 53, Will, IL
Built 1928 Load: 46.7 t ADT: 3,300
ROCKHURST ROAD
FairOver: LILY CACHE CREEK
0.2M E OF RT53, Will, IL
Built 1965 Load: 46.7 t ADT: 2,300
EB IL 13
FairOver: BNSF RR
1.3 MILES WEST I-57, Williamson, IL
Built 2014 Load: 46.7 t ADT: 26,300
I-70 (WB)
FairOver: BIG CREEK
1 MI E ILL 1, Clark, IL
Built 1968 Load: 47.0 t ADT: 12,450
Showing 13,001-13,050 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.