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-288
FairOver: SECOND SALT CREEK
2.5 MI N TEUTOPOLIS, Effingham, IL
Built 1994 Load: 38.6 t ADT: 375
FAS 2870
FairOver: TRIB MIDDLE FORK CK
CARLYLE RD N THOMP, Franklin, IL
Built 1982 Load: 38.6 t ADT: 175
ILL 78 & 97
FairOver: LACY DITCH
.1 N. JCT136&ILL 78, Fulton, IL
Built 1936 Load: 38.6 t ADT: 3,000
ILL 78
FairOver: COAL CREEK
2 MILES N OF ANNAWAN, Henry, IL
Built 1979 Load: 38.6 t ADT: 1,700
US RT 6
FairOver: MUD CREEK
0.9 MI W OF ILL 78, Henry, IL
Built 1980 Load: 38.6 t ADT: 1,500
FAI 80 SB
FairOver: GREEN RIVER
1.9 MI N JCT US 6, Henry, IL
Built 2014 Load: 38.6 t ADT: 10,800
US 45
FairOver: CAVE CREEK
1.7 MI N MASSAC CO, Johnson, IL
Built 1920 Load: 38.6 t ADT: 2,000
ILL 146
FairOver: CACHE RIVER
1 MI W OF W VIENNA, Johnson, IL
Built 1930 Load: 38.6 t ADT: 2,250
OBRIEN ROAD
FairOver: HARMONY CREEK
4 MI NW HAMPSHIRE, Kane, IL
Built 1982 Load: 38.6 t ADT: 75
ALLEN RD
FairOver: COON CK
NE SEC19,T42N,R6E, Kane, IL
Built 1999 Load: 38.6 t ADT: 325
MIDDLETON ROAD
FairOver: VIRGIL DITCH NO 3
3 MI S BURLINGTON, Kane, IL
Built 1980 Load: 38.6 t ADT: 150
ASHLEY RD TR 86
FairOver: AUX SABLE DRAINAGE
1.14 MI N OF ILL 52, Kendall, IL
Built 1985 Load: 38.6 t ADT: 400
TR 215
FairOver: SPOON RIVER
CTR-24-T11NR3E, Knox, IL
Built 1986 Load: 38.6 t ADT: 250
I-94 SB
FairOver: DES PLAINES RIVER
I94 .7M N ILL 120, Lake, IL
Built 1958 Load: 38.6 t ADT: 47,800
ILL 23 FAP 68
FairOver: INDIAN CR
2.63 MI N OF US 52, LaSalle, IL
Built 1972 Load: 38.6 t ADT: 1,700
TR-253
FairOver: BIG SLOUGH CREEK
2 MI NW ST FRANCISVL, Lawrence, IL
Built 1987 Load: 38.6 t ADT: 100
TR-58
FairOver: MUDDY CREEK
5 MI ESE CHAUNCEY, Lawrence, IL
Built 1988 Load: 38.6 t ADT: 20
ILL 18
FairOver: Norfolk & Southern RR
0.58 M N OF ILL 17, Livingston, IL
Built 1926 Load: 38.6 t ADT: 1,250
TR 36
FairOver: DITCH ROOK CREEK
1530 N, 700 E, Livingston, IL
Built 1958 Load: 38.6 t ADT: 75
I-55 SB
FairOver: SALT CREEK
2.1M S IL10, Logan, IL
Built 1973 Load: 38.6 t ADT: 13,750
I-55 NB
FairOver: SALT CREEK
2.1M S IL10, Logan, IL
Built 1973 Load: 38.6 t ADT: 13,750
IL 108
FairOver: HODGES CREEK
2.6 M E GREEN CO LN, Macoupin, IL
Built 2011 Load: 38.6 t ADT: 800
I-39/US 51 SB
FairOver: BNSF RR
1.15 MI S OF ILL 17, Marshall, IL
Built 1989 Load: 38.6 t ADT: 8,000
I-39/US 51 NB
FairOver: BNSF RR
1.14 MI S 0F ILL 17, Marshall, IL
Built 1989 Load: 38.6 t ADT: 8,000
TR-128
FairOver: TRIB-TO-DAVIS-BAYOU
0.8 MI N OF CH3, Massac, IL
Built 1985 Load: 38.6 t ADT: 25
TR 25
FairOver: BEAR CREEK
.1 MI W ILL 145, Massac, IL
Built 2003 Load: 38.6 t ADT: 25
ILL 165
FairOver: MACKINAW CREEK
15.8 MI NE ILL 9, McLean, IL
Built 1928 Load: 38.6 t ADT: 1,350
ILL 9
FairOver: BRAYS CREEK
.83 E OF ARROWSMITH, McLean, IL
Built 1980 Load: 38.6 t ADT: 1,500
FAS 573
FairOver: PIKE CREEK
5.4 MI E GREENVIEW, Menard, IL
Built 1963 Load: 38.6 t ADT: 325
TR 208
FairOver: EDWARDS RIVER
SE-32-T15NR2W, Mercer, IL
Built 1997 Load: 38.6 t ADT: 75
FAS 617
FairOver: LT FRK APPLE CREEK
2.5 MI SE NORTNVILLE, Morgan, IL
Built 1992 Load: 38.6 t ADT: 125
TR 11
FairOver: W OKAW RIVER TRIB
2.6 MI NW LOVINGTON, Moultrie, IL
Built 1987 Load: 38.6 t ADT: 50
I-39 & US 51 SB
FairOver: KILBUCK CREEK
3 MI N OF ILL 64, Ogle, IL
Built 1981 Load: 38.6 t ADT: 16,100
WILLOW KNOLLS ROAD
FairOver: C&NW RR
1MI E ORANGE PRAIRIE, Peoria, IL
Built 1977 Load: 38.6 t ADT: 10,500
CH 5
FairOver: S FORD MCKEE CREEK
4 MI NE GRIGGSVILLE, Pike, IL
Built 1988 Load: 38.6 t ADT: 100
TR 95A
FairOver: HODGES BAYOU
3.5 MI E PULASKI, Pulaski, IL
Built 1992 Load: 38.6 t ADT: 150
TR 105
FairOver: TRIB TO BOAR CREEK
2.4 MI W VILLA RIDGE, Pulaski, IL
Built 1993 Load: 38.6 t ADT: 50
FAS 853
FairOver: LITTLE MARY'S RIVER
7.5 M S SPARTA, Randolph, IL
Built 1915 Load: 38.6 t ADT: 450
FAP-116 (ILL-130)
FairOver: LONG BR FOX RIVER
3 MI S JASPER CO LN, Richland, IL
Built 1983 Load: 38.6 t ADT: 4,850
155 AVE W
FairOver: MUD CREEK
6 MI SW OF MILAN, Rock Island, IL
Built 1974 Load: 38.6 t ADT: 75
I-55 (NB)
FairOver: ILLINOIS CENTRAL RR
.3M N IL 54/SANG. AV, Sangamon, IL
Built 1963 Load: 38.6 t ADT: 14,600
VETERANS/IL 4 (SB)
FairOver: OLD IC RRR.O.W.
.3M N I-72, Sangamon, IL
Built 1973 Load: 38.6 t ADT: 31,800
VETERANS/IL 4 (NB)
FairOver: OLD IC RR R.O.W.
.3M N I-72, Sangamon, IL
Built 1973 Load: 38.6 t ADT: 31,800
FAS 470-CH 6
FairOver: LITTLE MACKINAW RI
CTR-8-T23NR2W, Tazewell, IL
Built 1946 Load: 38.6 t ADT: 800
TR 5 C
FairOver: FOUNTAIN CREEK BR
0.5 MI N EAST LYNN, Vermilion, IL
Built 1959 Load: 38.6 t ADT: 75
TR 160
FairOver: COON BRANCH
4 MI NW OF HOYLETON, Washington, IL
Built 1917 Load: 38.6 t ADT: 50
TR 3
FairOver: DODD'S BRANCH
WASH-PERRY COUNTY LI, Washington, IL
Built 1917 Load: 38.6 t ADT: 25
FAP-328 (US-45)
FairOver: ENDSLEY CREEK
3.7 MI S CLAY CO LN, Wayne, IL
Built 1921 Load: 38.6 t ADT: 2,150
FAP-782 (ILL-1)
FairOver: INDIAN CREEK
1.5 MI S ILL-1/US-45, White, IL
Built 1929 Load: 38.6 t ADT: 4,400
US 30
FairOver: UNION PACIFIC RR
2.5 MI W OF MORRISON, Whiteside, IL
Built 1946 Load: 38.6 t ADT: 5,550
Showing 11,701-11,750 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.