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
ILL 8
FairOver: BNSF (094069E)
AT OAK HILL, Peoria, IL
Built 1935 Load: 43.4 t ADT: 1,850
ILL 91
FairOver: KICKAPOO CR
1.5 MI S OF DUNLAP, Peoria, IL
Built 1987 Load: 43.4 t ADT: 6,750
ILL. RTE. 127
FairOver: SWANWICK CR OVERFLOW
4.1M S WASH CO LINE, Perry, IL
Built 1976 Load: 43.4 t ADT: 3,500
I-72 / US 36
FairOver: DRAINAGE DITCH
IL 96/HULL INTCHG, Pike, IL
Built 1986 Load: 43.4 t ADT: 9,400
Roots Rd
FairOver: UPRR
1 MI E OF ROOTS, Randolph, IL
Built 1960 Load: 43.4 t ADT: 375
FAS 1720 (ILL-250)
FairOver: FOX RIVER
1.5 MI W OLNEY, Richland, IL
Built 1984 Load: 43.4 t ADT: 2,600
ILL 92(CENTNAL FRW
FairOver: IAIS RR
.2 MI S 18TH ST R.I., Rock Island, IL
Built 1963 Load: 43.4 t ADT: 11,100
TR 296 2E
FairOver: HENKLE CREEK
1.5 MI SE OF PAWNEE, Sangamon, IL
Built 1900 Load: 43.4 t ADT: 50
ILL 106
FairOver: BLUFF CREEK
2 MI W WINCHESTER, Scott, IL
Built 1953 Load: 43.4 t ADT: 1,800
ILL 4 & 15
FairOver: KASKASKIA OVERFLOW
0.4 M E JCT ILL 4, St. Clair, IL
Built 1946 Load: 43.4 t ADT: 3,600
I-64 WB
FairOver: A&SRR
0.67 mi E of IL 111, St. Clair, IL
Built 1968 Load: 43.4 t ADT: 38,350
IL 26
FairOver: YELLOW CREEK
S EDGE OF FREEPORT, Stephenson, IL
Built 1988 Load: 43.4 t ADT: 12,600
US 20 WB
FairOver: PECATONICA RIVER
NE OF FREEPORT, Stephenson, IL
Built 2008 Load: 43.4 t ADT: 6,800
ILL 146 & I-57
FairOver: STREAM
FAI 57-ILL 146, Union, IL
Built 1960 Load: 43.4 t ADT: 6,600
IL 1 (FAP 332)
FairOver: CREEK
2 MI S OF HOOPESTON, Vermilion, IL
Built 1940 Load: 43.4 t ADT: 4,550
BISMARCK RD(FAS497
FairOver: N FORK VERM RIVER
2 MI W OF BISMARCK, Vermilion, IL
Built 1975 Load: 43.4 t ADT: 1,000
IL 9 (FAP 697)
FairOver: CREEK
1.7 MI E OF CH 10, Vermilion, IL
Built 1983 Load: 43.4 t ADT: 2,050
TR 261
FairOver: STREAM
1 MI N OAKWOOD, Vermilion, IL
Built 1961 Load: 43.4 t ADT: 125
FAP-821 (ILL-15)
FairOver: SKILLET FORK OVERFLO
.2 MI N WAYNE CITY, Wayne, IL
Built 1982 Load: 43.4 t ADT: 3,500
TR-112
FairOver: BROAD RUN
2.5 MI NE ENFIELD, White, IL
Built 2012 Load: 43.4 t ADT: 25
I-88 EB
FairOver: ROCK RIVER
3 MI W ROCK FALLS, Whiteside, IL
Built 1972 Load: 43.4 t ADT: 6,850
I-88 WB
FairOver: ROCK RIVER
3 MI W ROCK FALLS, Whiteside, IL
Built 1972 Load: 43.4 t ADT: 6,850
IL 53
FairOver: KANKAKEE RIVER
0.3 M W OF IL 102, Will, IL
Built 1987 Load: 43.4 t ADT: 10,650
BRIGGS STREET
FairOver: HICKORY CR &METRA RR
0.8 MI N I80, Will, IL
Built 1984 Load: 43.4 t ADT: 9,150
ILL 2
FairOver: FULLERS CREEK
0.6 MI SOUTH US 20, Winnebago, IL
Built 2011 Load: 43.4 t ADT: 15,500
ILL 251 & FR RDS
FairOver: WILLOW CREEK
1 MI S JCT ILL 173, Winnebago, IL
Built 1964 Load: 43.4 t ADT: 17,300
MCMICHAEL ROAD
FairOver: MCDONALD CREEK
0.4 M E BELVIDERE RD, Winnebago, IL
Built 1982 Load: 43.4 t ADT: 300
FAS 639
FairOver: BEAR CREEK
2.75 M N OF PALMER, Christian, IL
Built 1980 Load: 43.7 t ADT: 250
FAS 782
FairOver: FLAT BRANCH CREEK
COUNTY LINE ROAD, Clinton, IL
Built 1958 Load: 43.7 t ADT: 1,000
TR 131/AVENUE D
FairOver: LOST CREEK
SHATTUC, Clinton, IL
Built 1924 Load: 43.7 t ADT: 50
I- 94 BISHOP FORD
FairOver: LITTLE CAL RIVER
1.1 M S IL 83, Cook, IL
Built 1947 Load: 43.7 t ADT: 145,700
IL 53 W FRT RD/HIC
FairOver: SALT CR
0.8 M N I90 P18, Cook, IL
Built 1962 Load: 43.7 t ADT: 1,700
OAK PARK AVE
FairOver: TINLEY CREEK
0.1 M S OF 143RD ST, Cook, IL
Built 1999 Load: 43.7 t ADT: 11,400
I-57 (NB)
FairOver: HAYES BRANCH
E EDGE OF TUSCOLA, Douglas, IL
Built 1969 Load: 43.7 t ADT: 11,050
IL 83
FairOver: SALT CREEK
0.8 M S ST CHRLES RD, DuPage, IL
Built 1937 Load: 43.7 t ADT: 61,200
FAS 2801 (IL 128)
FairOver: WOLF CREEK
2.25 MI S IL 33, Effingham, IL
Built 2010 Load: 43.7 t ADT: 1,400
TR 119 DRUMMER
FairOver: DRUMMER CREEK
470E-030N, Ford, IL
Built 1973 Load: 43.7 t ADT: 75
CH 3 MELVIN SIBLEY
FairOver: THE BIG FOUR
950E,1200N, Ford, IL
Built 1981 Load: 43.7 t ADT: 625
TR 366
FairOver: TRIB OF ROCK CREEK
2.0 E FOUNTAIN GREEN, Hancock, IL
Built 1987 Load: 43.7 t ADT: 50
ILL 96
FairOver: SILVER CREEK
2 MI W OF LOMAX, Henderson, IL
Built 1936 Load: 43.7 t ADT: 1,500
ILL RT 82
FairOver: GREEN RIVER
4.5 MI S JCT ILL 92, Henry, IL
Built 2011 Load: 43.7 t ADT: 6,750
I 57 NB
FairOver: DODDS CREEK
2 MI S OF S TRI-LEVL, Jefferson, IL
Built 1965 Load: 43.7 t ADT: 18,750
I 57 SB
FairOver: DODDS CREEK
2 MI S OF S TRI-LEVL, Jefferson, IL
Built 1965 Load: 43.7 t ADT: 18,750
US 45
FairOver: MCCORKLE CREEK
0.3 MI S OF ILL 146, Johnson, IL
Built 1924 Load: 43.7 t ADT: 2,000
MS 6490 IN MENDOTA
FairOver: L. VERMILLION CR
E 4TH N 4345, LaSalle, IL
Built 1965 Load: 43.7 t ADT: 225
I 39&US 51
FairOver: STREAM
2 MI N OF US 30, Lee, IL
Built 1984 Load: 43.7 t ADT: 19,100
FAI 55
FairOver: TRIB TO SILVER CREEK
0.24 MI S OF ILL 4, Madison, IL
Built 1971 Load: 43.7 t ADT: 31,500
TR 284
FairOver: POPE CREEK
NW-1-T13NR1W, Mercer, IL
Built 1981 Load: 43.7 t ADT: 25
TR 0473
FairOver: DRY FORK
4.3 MI SW WALSHVILLE, Montgomery, IL
Built 1900 Load: 43.7 t ADT: 25
ILL 145
FairOver: HAYES CREEK
0.5 MI S ILL 147, Pope, IL
Built 1954 Load: 43.7 t ADT: 1,150
Showing 12,651-12,700 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.