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
CENTER AVE
FairOver: ST.JOSEPH CREEK
0.2 MI W OF MAIN ST, DuPage, IL
Built 1967 Load: 37.3 t ADT: 325
FAP-774 (ILL-33)
FairOver: WOLF CREEK
2 MI E BEECHER CITY, Effingham, IL
Built 1939 Load: 37.3 t ADT: 3,400
CH-13 PUMPING STA
FairOver: BISHOP CREEK
2 MI NW DIETERICH, Effingham, IL
Built 1993 Load: 37.3 t ADT: 375
FAU 8413 (US-40)
FairOver: RACCOON CREEK
0.25 Mi. W 600E Rd, Fayette, IL
Built 1976 Load: 37.3 t ADT: 3,800
ILL 34
FairOver: STREAM E OF BENTON
2.6 MI E BENTON, Franklin, IL
Built 1957 Load: 37.3 t ADT: 3,650
Hillview Eldred Rd
FairOver: KCSRR, Hurricane Creek
West Hillview CL, Greene, IL
Built 1963 Load: 37.3 t ADT: 300
CH 32 GARDNER RD
FairOver: TRIB TO WAPECON CR
.01 MI E LASALLE RD, Grundy, IL
Built 1988 Load: 37.3 t ADT: 900
I 80 SB
FairOver: IAIS RR
1.7 MI N JCT US 6, Henry, IL
Built 1965 Load: 37.3 t ADT: 10,800
I 80 NB
FairOver: IAIS RR
1.7 MI N JCT US 6, Henry, IL
Built 1965 Load: 37.3 t ADT: 10,800
OSCO ROAD
FairOver: N BRANCH CAMP CREEK
1.3 MI N JCT ILL 81, Henry, IL
Built 1932 Load: 37.3 t ADT: 500
TR 35
FairOver: HORSE CR
2.2 MI NE ESSEX, Kankakee, IL
Built 1980 Load: 37.3 t ADT: 20
TR 7
FairOver: SO BRANCH ROCK CREEK
2 MI N DES ELM, Kankakee, IL
Built 1980 Load: 37.3 t ADT: 150
TR 66
FairOver: SO. BRANCHFORKED CR
2.4 MI NW DESELM, Kankakee, IL
Built 1983 Load: 37.3 t ADT: 50
US 34/ FAP 591
FairOver: BIG ROCK CR
4.3 M. W. of IL 47, Kendall, IL
Built 1990 Load: 37.3 t ADT: 16,000
FAS 256
FairOver: LITTLE VERMILLION
N42ND E700TH, LaSalle, IL
Built 1972 Load: 37.3 t ADT: 150
FAS 1279
FairOver: BAILEY CREEK
N 2101,E 600, LaSalle, IL
Built 1969 Load: 37.3 t ADT: 650
TR-49
FairOver: SUTPHENS RUN
N 45TH E 890, LaSalle, IL
Built 1930 Load: 37.3 t ADT: 25
TR18
FairOver: CEDAR CR
E 1ST N 2070, LaSalle, IL
Built 1978 Load: 37.3 t ADT: 75
ILL 116 FAP 681
FairOver: FELKY SLOUGH
2.87 MI W OF ILL 47, Livingston, IL
Built 1965 Load: 37.3 t ADT: 1,750
FAP 320(IL 121 & 4
FairOver: SPRING CREEK
IN DECATUR, Macon, IL
Built 1971 Load: 37.3 t ADT: 17,900
US51(SB)(FAP 322)
FairOver: STEVENS CREEK
3 MI N OF FORSYTH, Macon, IL
Built 1982 Load: 37.3 t ADT: 12,000
US51(NB)(FAP 322)
FairOver: STEVENS CREEK
3 MI N OF FORSYTH, Macon, IL
Built 1983 Load: 37.3 t ADT: 12,000
TR 83
FairOver: NASSA CR
2 MI E PALMYRA, Macoupin, IL
Built 1980 Load: 37.3 t ADT: 20
IL 161 - FAP 805
FairOver: RACCOON CREEK OVFL
2.75 MI E CENTRALIA, Marion, IL
Built 1974 Load: 37.3 t ADT: 5,150
US 136
FairOver: CAMP CREEK
1 MI S OF ILL 41, McDonough, IL
Built 2007 Load: 37.3 t ADT: 2,850
IL 62
FairOver: FOX RIVER
0.15 M E OF IL 31, McHenry, IL
Built 1988 Load: 37.3 t ADT: 43,100
FAS 573
FairOver: INDIAN CREEK
2 MI NE PETERSBURG, Menard, IL
Built 1969 Load: 37.3 t ADT: 950
TR 169
FairOver: E FORK SHOAL CREEK
1 MI E WITT, Montgomery, IL
Built 1982 Load: 37.3 t ADT: 100
ILL 133(FAP 749)
FairOver: JONATHAN CREEK
4 MI E LOVINGTON, Moultrie, IL
Built 1977 Load: 37.3 t ADT: 2,600
IL 72
FairOver: MUD CREEK TRIB.
1.1 MI E LEAF RIVER, Ogle, IL
Built 1983 Load: 37.3 t ADT: 1,700
STREITMATTER RD
FairOver: BR SPOON RIVER
SW1/4-2-PRINCEVILLE, Peoria, IL
Built 2019 Load: 37.3 t ADT: 75
FAS 531(CH 4)
FairOver: CAMP CREEK DRAIN DIT
4.1 MI E MONTICELLO, Piatt, IL
Built 1988 Load: 37.3 t ADT: 2,150
ILL 96
FairOver: HADLEY CREEK
.5MI S KINDERHOOK, Pike, IL
Built 1938 Load: 37.3 t ADT: 1,350
I 57 NB & US 51 NB
FairOver: CNIC RR
0.2 MI N FAS 2936, Pulaski, IL
Built 1966 Load: 37.3 t ADT: 6,700
TR ROUTE 98
FairOver: CACHE RIVER
1.3 MI S PERKS, Pulaski, IL
Built 1982 Load: 37.3 t ADT: 125
TR 5(PULASKI CO)
FairOver: MILL CREEK
2 MI W OF WETAUG, Pulaski, IL
Built 1987 Load: 37.3 t ADT: 75
MILAN BELTWAY
FairOver: ROCK RIVER
S. OF ROCK ISLAND, Rock Island, IL
Built 2006 Load: 37.3 t ADT: 19,400
IL 29-J D JONES PK
FairOver: SPRING CREEK
.5M S VETERANS(IL 4), Sangamon, IL
Built 1975 Load: 37.3 t ADT: 8,300
TR 46
FairOver: INDIAN CREEK
CTR-31-T13NR6E, Stark, IL
Built 1982 Load: 37.3 t ADT: 100
W WINNESHEIK RD
FairOver: DUCKS MISERY
2.5 MI W OF ILL 26, Stephenson, IL
Built 1897 Load: 37.3 t ADT: 250
FAS 1481-CH 7
FairOver: MACKINAW RIVER
N.CTR-3-T23NR3W, Tazewell, IL
Built 1962 Load: 37.3 t ADT: 1,650
CH-11 (FAS 2462)
FairOver: MACKINAW RIVER
SE-12-T23NR5W, Tazewell, IL
Built 1967 Load: 37.3 t ADT: 1,400
I-74 (WB)
FairOver: VERMILION RIVER
S OF DANVILLE, Vermilion, IL
Built 1964 Load: 37.3 t ADT: 13,600
FAS 331(CH 10)
FairOver: SALT FORK
2.25 MI S OAKWOOD, Vermilion, IL
Built 1980 Load: 37.3 t ADT: 2,400
TR 179 A
FairOver: STREAM
7 MI NW DANVILLE, Vermilion, IL
Built 1964 Load: 37.3 t ADT: 50
TR 101
FairOver: N FK VERMILION RIVER
.5 MI W OF ALVAN, Vermilion, IL
Built 2003 Load: 37.3 t ADT: 50
NB US 67
FairOver: S. HENDERSON CREEK
2.8 MI S OF US 34, Warren, IL
Built 1992 Load: 37.3 t ADT: 4,500
SB US 67
FairOver: S. HENDERSON CREEK
2.8 MI S OF US 34, Warren, IL
Built 1992 Load: 37.3 t ADT: 4,500
FAP-332 (ILL-1)
FairOver: LITTLE WABASH RIVER
CARMI, White, IL
Built 1949 Load: 37.3 t ADT: 6,350
ILL RT 84
FairOver: SPRING CREEK
.5 MI N ALBANY, Whiteside, IL
Built 1932 Load: 37.3 t ADT: 4,050
Showing 11,401-11,450 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.