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 13
FairOver: DRAINAGE DITCH
0.1 M E OF ILL 166, Williamson, IL
Built 1962 Load: 37.9 t ADT: 12,100
ROCKTON AVE
FairOver: NW DRAINAGEWAY
0.3 MI S OF HALSTED, Winnebago, IL
Built 1962 Load: 37.9 t ADT: 8,850
HUNTER AVE
FairOver: KEITH CREEK
.01 MI N OF CHARLES, Winnebago, IL
Built 1987 Load: 37.9 t ADT: 2,150
ILL 89
FairOver: PARTRIDGE CREEK
2.95 MI N OF ILL 116, Woodford, IL
Built 1927 Load: 37.9 t ADT: 3,950
I-39/US 51 SB
FairOver: PANTHER CREEK
4.4 MI N OF US 24, Woodford, IL
Built 1989 Load: 37.9 t ADT: 8,100
I-39/US 51 NB
FairOver: PANTHER CREEK
4.4 MI N OF US 24, Woodford, IL
Built 1989 Load: 37.9 t ADT: 8,100
ILL 89
FairOver: SNAG CREEK
9.5 MI N OF ILL 116, Woodford, IL
Built 2009 Load: 37.9 t ADT: 3,150
TR 314
FairOver: THURMAN CRK
3.0 E OF LORAINE, Adams, IL
Built 1983 Load: 38.2 t ADT: 75
TR 150A
FairOver: JACKSON CREEK
2 MI N OF TAMMS, Alexander, IL
Built 1984 Load: 38.2 t ADT: 100
TR 51
FairOver: TRIB SAMMONS CREEK
BEAN RIDGE ROAD, Alexander, IL
Built 1987 Load: 38.2 t ADT: 100
TR 44
FairOver: TRIB TO BLACK CREEK
0.7 MI S OF ILL 3, Alexander, IL
Built 1989 Load: 38.2 t ADT: 100
TR 39
FairOver: TRIB TO MILL CREEK
2 MI SE OF ELCO, Alexander, IL
Built 1990 Load: 38.2 t ADT: 10
TR 105-CLANK ROAD
FairOver: ROAD RUN CREEK
3 MI NE OLIVE BRANCH, Alexander, IL
Built 1995 Load: 38.2 t ADT: 100
IL 29
FairOver: ADAMS CREEK
NORTHEAST EDGE DEPUE, Bureau, IL
Built 1985 Load: 38.2 t ADT: 2,450
TOWNSHIP ROAD 74
FairOver: BR BUREAU CR
5.5 MI. W. LAMOILLE, Bureau, IL
Built 1962 Load: 38.2 t ADT: 125
TR0075
FairOver: WEST POINT CR
1.75M SW BATCHTOWN, Calhoun, IL
Built 1901 Load: 38.2 t ADT: 25
FAP 326 (IL 47)
FairOver: STREAM
0.25 MI N OF US 136, Champaign, IL
Built 1931 Load: 38.2 t ADT: 3,450
I-74
FairOver: STREAM
0.5 MI E US 45, Champaign, IL
Built 1960 Load: 38.2 t ADT: 30,400
CH-7 (FAS-643)
FairOver: SPRING CREEK
6 MI N OF OWANECO, Christian, IL
Built 1986 Load: 38.2 t ADT: 400
TR 253
FairOver: COTTONWOOD BRANCH
3.5MI W OF OWANECO, Christian, IL
Built 1992 Load: 38.2 t ADT: 25
US 40(FAS 1707)
FairOver: HAWKS CREEK
0.5 MI E. OF I-70, Clark, IL
Built 1951 Load: 38.2 t ADT: 2,150
ILL 161
FairOver: SHOAL CREEK overflow
0.6 M E GERMANTOWN, Clinton, IL
Built 1935 Load: 38.2 t ADT: 4,250
FAS 6689(CH 2)
FairOver: GREASY CREEK
2.75 MI N OF RARDIN, Coles, IL
Built 1959 Load: 38.2 t ADT: 250
IL 58 (DEMPSTER S
FairOver: N BR CHICAGO RIVER
0.6 M E IL 43, Cook, IL
Built 1966 Load: 38.2 t ADT: 34,900
IL 43 SB HARLEM A
FairOver: RR-MWRD SLUDGE&AC RD
0.2 M N I-55, Cook, IL
Built 1969 Load: 38.2 t ADT: 35,500
KENSINGTON RD
FairOver: MC DONALD CREEK
0.05 M W RIVER RD, Cook, IL
Built 1938 Load: 38.2 t ADT: 4,950
HALSTED ST
FairOver: THORN CREEK
0.6 M N OF US 30, Cook, IL
Built 1986 Load: 38.2 t ADT: 6,800
MONTROSE AVE
FairOver: N BR CHICAGO RIVER
4400 N & 2600 W, Cook, IL
Built 1917 Load: 38.2 t ADT: 11,600
STONY ISL SB TO E
FairOver: GROUND
0.07 M N 79TH P7C, Cook, IL
Built 1958 Load: 38.2 t ADT: 5,000
STONY ISL SB TO E
FairOver: GROUND
0.26 M S 79TH P7C, Cook, IL
Built 1958 Load: 38.2 t ADT: 5,000
US 51 (NB)(FAP 322
FairOver: TRIB LONG POINT CR
1.75 MI N OF WAPELLA, De Witt, IL
Built 1980 Load: 38.2 t ADT: 9,650
I-88
FairOver: STREAM
3.1 MI W OF ILL 23, DeKalb, IL
Built 1972 Load: 38.2 t ADT: 24,000
US 34
FairOver: ST JOSEPH CREEK
0.25 M E OF IL 53, DuPage, IL
Built 1968 Load: 38.2 t ADT: 22,500
TR-309
FairOver: LUCAS CREEK
1.7 M SW EBERLE, Effingham, IL
Built 1983 Load: 38.2 t ADT: 100
FAP 697(ILL. RTE 9
FairOver: TRIB. TO BIG 4 DITCH
.4 M W OF ELLIOT RD, Ford, IL
Built 1998 Load: 38.2 t ADT: 2,550
IL 96
FairOver: LARRY CREEK
5.3M N US136,HAMILTN, Hancock, IL
Built 1936 Load: 38.2 t ADT: 1,050
FAI 80 NB
FairOver: GREEN RIVER
1.9 MI N JCT US 6, Henry, IL
Built 2014 Load: 38.2 t ADT: 10,800
CH 4
FairOver: GARR CR
.6 MI S KANKAKEE, Kankakee, IL
Built 1967 Load: 38.2 t ADT: 1,250
MS 0010
FairOver: Minnie Creek Bridge
5 MI SOUTH KANKAKEE, Kankakee, IL
Built 1977 Load: 38.2 t ADT: 100
US 34/FAP 311
FairOver: WAUBANSEE CREEK
0.5 MI E OF OSWEGO, Kendall, IL
Built 2002 Load: 38.2 t ADT: 24,700
TR 7
FairOver: POPE CREEK
NE-6-T13NR1E, Knox, IL
Built 1983 Load: 38.2 t ADT: 125
I-39 SB/US 51 SB
FairOver: LITTLE VERMILION R.
1.3 MI N.OF US 52, LaSalle, IL
Built 1979 Load: 38.2 t ADT: 9,350
I-39 NB/US 51 NB
FairOver: LITTLE VERMILION R.
1.3 MI N OF US 52, LaSalle, IL
Built 1979 Load: 38.2 t ADT: 9,350
TR 152
FairOver: LONG POINT CR
E 9TH N 275, LaSalle, IL
Built 1932 Load: 38.2 t ADT: 25
ILL 17
FairOver: GOOSEBERRY CR
0.19 MI W OF ILL-47, Livingston, IL
Built 1963 Load: 38.2 t ADT: 3,500
MILL ST CH 10 EXT
FairOver: VERMILLION RIVER
0.21 MI S OF ILL 116, Livingston, IL
Built 1976 Load: 38.2 t ADT: 4,750
TOWNSHIP ROAD 473
FairOver: PADDOCK CREEK
2 MI SO BUNKER HILL, Macoupin, IL
Built 1981 Load: 38.2 t ADT: 175
IL 159
FairOver: Cahokia Creek
0.25 mi N of Edwardsville, Madison, IL
Built 1937 Load: 38.2 t ADT: 6,550
IL 143
FairOver: NSRR, GWERR, UPRR
0.3 MI E OF IL 3, Madison, IL
Built 1981 Load: 38.2 t ADT: 11,900
MASSAC CREEK RD
FairOver: WEAVER CREEK
1 MI N OF METROPOLIS, Massac, IL
Built 1997 Load: 38.2 t ADT: 1,150
Showing 11,601-11,650 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.