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
N SEMINARY /FAU 89
PoorOver: BLACK CREEK
0.25 N BELTLINE, Madison, IL
Built 1966 Load: 30.8 t ADT: 4,600
TR 150
PoorOver: TRIB LITTLE INDIAN
1 MI N ARCARIA, Morgan, IL
Built 1982 Load: 30.8 t ADT: 75
MULFORD RD
PoorOver: KILBUCK CR
2.5 MI SE LINDENWOOD, Ogle, IL
Built 1979 Load: 30.8 t ADT: 750
STREITMATTER RD
PoorOver: HENRY CREEK
SE1/4 4 HALLOCK TWP, Peoria, IL
Built 1984 Load: 30.8 t ADT: 75
ILL 145
PoorOver: STREAM
2.6 MI N ILL 146, Pope, IL
Built 1947 Load: 30.8 t ADT: 1,150
ILL 89
PoorOver: CLEAR CREEK
1.39 MI N OF ILL 18, Putnam, IL
Built 1928 Load: 30.8 t ADT: 1,550
CH 16
PoorOver: CASE CREEK
2 M E OF MILAN, Rock Island, IL
Built 1983 Load: 30.8 t ADT: 4,450
N 89TH ST
PoorOver: CREEK
300 FT. S. BUNKUM RD, St. Clair, IL
Built 1965 Load: 30.8 t ADT: 75
FAS-1702 (CH-11)
PoorOver: E BR BRUSHY CREEK
1.75 MI E FLAT ROCK, Crawford, IL
Built 1967 Load: 31.1 t ADT: 550
FAI 80 EB
PoorOver: MINERAL CREEK
2.9 MI E JCT I74, Henry, IL
Built 1961 Load: 31.1 t ADT: 10,300
FAI 80 WB
PoorOver: MINERAL CREEK
2.9 MI E JCT I74, Henry, IL
Built 1961 Load: 31.1 t ADT: 10,300
US 45-52
PoorOver: LANGAN CR
5.15 MI N OF US 52-IL 49, Iroquois, IL
Built 1952 Load: 31.1 t ADT: 3,650
TR 345B
PoorOver: TRIB LITTLE MUD CK
4MI W CISSNA PARK, Iroquois, IL
Built 1920 Load: 31.1 t ADT: 50
FAS-917
PoorOver: Worthern Bayou
E LINE SEC 20-9-3, Jackson, IL
Built 1976 Load: 31.1 t ADT: 800
CH 54
PoorOver: TOWER CR
1.5 MI W OF MOMENCE, Kankakee, IL
Built 1975 Load: 31.1 t ADT: 3,050
TR 128A
PoorOver: TOMAHAWK CR
E 7TH N 3610, LaSalle, IL
Built 1963 Load: 31.1 t ADT: 25
FAS 1737
PoorOver: JOE'S CRK
2.5 NW HETTICK, Macoupin, IL
Built 1967 Load: 31.1 t ADT: 200
TR 321
PoorOver: MDL FK SHOAL CR
4 MI SW HILLSBORO, Montgomery, IL
Built 1978 Load: 31.1 t ADT: 75
FAS 835-CH 12
PoorOver: MUD CREEK
WASHINGTON CO LINE, Perry, IL
Built 1958 Load: 31.1 t ADT: 775
TR 318
PoorOver: SCAB BRANCH
5.0 MI E RUSHVILLE, Schuyler, IL
Built 1964 Load: 31.1 t ADT: 50
WATERLOO RD/ FAS 8
PoorOver: GERHARDT CREEK
0.01MI N STC-MON LN, St. Clair, IL
Built 1961 Load: 31.1 t ADT: 1,850
TR 188
PoorOver: BR NORTH CREEK
1.5 MI S-1.75 W HOYL, Washington, IL
Built 1915 Load: 31.1 t ADT: 10
TR-426
PoorOver: MARTIN CREEK
1.5M E JEFFERSONVILL, Wayne, IL
Built 1909 Load: 31.1 t ADT: 100
YORKTOWN ROAD
PoorOver: COUNTY DITCH NO. 1
4 MI NW TAMPICO, Whiteside, IL
Built 1979 Load: 31.1 t ADT: 325
TR 69 C
PoorOver: E BRANCH SALT FORK R
3.6 MI SE RANTOUL, Champaign, IL
Built 1984 Load: 31.4 t ADT: 50
TR-255
PoorOver: SUTTON CREEK
2.5 MI SW OSKALOOSA, Clay, IL
Built 1969 Load: 31.4 t ADT: 50
LEMONT RD
PoorOver: DES P RIV, CANAL, RR
0.30 M S DUPAGE CO, Cook, IL
Built 1983 Load: 31.4 t ADT: 24,300
IL 1 (HALSTED ST
PoorOver: CAL UNION DITCH
@ 161ST .25 M S US6, Cook, IL
Built 1984 Load: 31.4 t ADT: 19,200
FAU-7331 (Walnut S
PoorOver: Ten Mile Creek
NW EDGE CLINTON, De Witt, IL
Built 1974 Load: 31.4 t ADT: 600
GORE RD. TR-41
PoorOver: W. FK. NETTLE CR
0.35 MI W.ASHTON RD, Grundy, IL
Built 1990 Load: 31.4 t ADT: 425
TR 81
PoorOver: HENDERSON CREEK
SE-26-T11NR5W, Henderson, IL
Built 1984 Load: 31.4 t ADT: 100
CO HWY 16 FAS 355
PoorOver: DIAMOND CREEK
1.5 MI S LONGPOINT, Livingston, IL
Built 1933 Load: 31.4 t ADT: 725
FAS 644(CH 55)
PoorOver: OVERFLOW OF SANGAMON
3.3 MI S NIANTIC, Macon, IL
Built 1979 Load: 31.4 t ADT: 550
Muni 6802 -Traughb
PoorOver: FINLEY CREEK
1.5 MI S OF MT ZION, Macon, IL
Built 1981 Load: 31.4 t ADT: 150
FAS 546(CH 21)
PoorOver: Trib N Fork Creek
6.8 MI W OF MAROA, Macon, IL
Built 1983 Load: 31.4 t ADT: 300
CH 49 WIESEMAN RD.
PoorOver: WEST FORK CAHOKIA CR
2.6 NW WORDEN, Madison, IL
Built 1988 Load: 31.4 t ADT: 275
HENRY RD - TR 311
PoorOver: PINE CREEK
8.0 M SW OF OREGON, Ogle, IL
Built 1982 Load: 31.4 t ADT: 50
CONGER ROAD
PoorOver: MILL CREEK
3 MI NW OF BYRON, Ogle, IL
Built 1987 Load: 31.4 t ADT: 250
TR 348 AGG SURF RO
PoorOver: HONEY CREEK
2 MI W 1.5 MI S TIME, Pike, IL
Built 1981 Load: 31.4 t ADT: 25
TR-589
PoorOver: FOUR MILE CREEK
2MI SW OF WAYNE CITY, Wayne, IL
Built 1979 Load: 31.4 t ADT: 100
FAS 364 CH 13
PoorOver: WBR PANTHER CREEK
FRONT ST ROANOKE, Woodford, IL
Built 1981 Load: 31.4 t ADT: 1,200
TR 89
PoorOver: FLATVILLE DRAIN DIT
1 MI N FLATVILLE, Champaign, IL
Built 1975 Load: 31.8 t ADT: 25
CH 22-FAS 636
PoorOver: SANGAMON RIVER
2.3 MI N MT AUBURN, Christian, IL
Built 1969 Load: 31.8 t ADT: 600
TR-123
PoorOver: DRAINAGE DITCH
2 MI ESE BONE GAP, Edwards, IL
Built 1909 Load: 31.8 t ADT: 25
TR 229A
PoorOver: ANOY CREEK
TR 229A OUER ANOY CK, Franklin, IL
Built 1986 Load: 31.8 t ADT: 125
FAP-849 (ILL-142)
PoorOver: STREAM
1.8 MI S MT VERNON, Jefferson, IL
Built 1928 Load: 31.8 t ADT: 3,650
CANYON RD
PoorOver: CLEAR CREEK
3.4 MI WEST ILL 78, Jo Daviess, IL
Built 1935 Load: 31.8 t ADT: 125
TR 158
PoorOver: SALT CREEK
5 MI S LINCOLN, Logan, IL
Built 1991 Load: 31.8 t ADT: 75
CH 18(SCHOOL RD)
PoorOver: FRIENDS CREEK
1.5 MI N ARGENTA, Macon, IL
Built 1977 Load: 31.8 t ADT: 200
FAS 773/ ALHAMBRA
PoorOver: SILVER CK
1.0MI N ALHAMBRA, Madison, IL
Built 1971 Load: 31.8 t ADT: 600
Showing 26,501-26,550 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |