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
FAU8198/S JOHNSON
FairOver: TOWN BROOK
S JOHNSON @ BROOK, Morgan, IL
Built 1997 Load: 32.4 t ADT: 200
WADSWORTH DR.
FairOver: TRIB/MAUVAISE TERRE
WADSWORTH DRIVE, Morgan, IL
Built 1996 Load: 32.4 t ADT: 300
SO FAYETTE STREET
FairOver: TOWN BROOK
ON FAYETTE @ BROOK, Morgan, IL
Built 2002 Load: 32.4 t ADT: 550
CH 8(FAS 659)
FairOver: JONATHAN CREEK
3 MI S OF CADWELL, Moultrie, IL
Built 1986 Load: 32.4 t ADT: 2,100
CH 8(FAS 659)
FairOver: CREEK
3.5 MI E OF SULLIVAN, Moultrie, IL
Built 1986 Load: 32.4 t ADT: 2,000
CH 15(FAS 637)
FairOver: MARROWBONE CREEK
.25 MI S BETHANY, Moultrie, IL
Built 1981 Load: 32.4 t ADT: 900
CH 13
FairOver: UNNAMED TRIBUTARY
2.2 MI SSW BETHANY, Moultrie, IL
Built 2006 Load: 32.4 t ADT: 450
TR 4
FairOver: MARROWBONE CREEK
.25 MI SE DALTON CIT, Moultrie, IL
Built 1983 Load: 32.4 t ADT: 50
TR 37
FairOver: MARROWBONE CREEK
1.25 M SW DALTON CIT, Moultrie, IL
Built 2012 Load: 32.4 t ADT: 275
TR 119
FairOver: JONATHAN CREEK
2.2 MI E OF SULLIVAN, Moultrie, IL
Built 1997 Load: 32.4 t ADT: 425
TR 67
FairOver: TWO MILE BRANCH
4 MI N OF SULLIVAN, Moultrie, IL
Built 1985 Load: 32.4 t ADT: 100
TR 39
FairOver: JONATHON CREEK
1 MI N OF CADWELL, Moultrie, IL
Built 1996 Load: 32.4 t ADT: 75
TR 80
FairOver: W OKAW RIVER
2.1 MI NW LOVINGTON, Moultrie, IL
Built 1977 Load: 32.4 t ADT: 50
TR 58
FairOver: STRINGTOWN BRANCH
2 MI W LOVINGTON, Moultrie, IL
Built 1982 Load: 32.4 t ADT: 100
TR 40
FairOver: W OKAW RIVER
2.2 MI NW LOVINGTON, Moultrie, IL
Built 1991 Load: 32.4 t ADT: 50
TR 61
FairOver: W OKAW RIVER
3.3 MI SW LOVINGTON, Moultrie, IL
Built 1988 Load: 32.4 t ADT: 50
TR 58
FairOver: STREAM
2.4 MI NE LAKE CITY, Moultrie, IL
Built 1990 Load: 32.4 t ADT: 75
TR 5
FairOver: HAMMOND MUTUAL DITCH
2.2 MI S OF HAMMOND, Moultrie, IL
Built 1991 Load: 32.4 t ADT: 20
TR 38A (CR 2300N)
FairOver: Drainage Ditch
625E CR 2300N, Moultrie, IL
Built 1992 Load: 32.4 t ADT: 20
TR 17
FairOver: CRABAPPLE CREEK
1.6 MI NW ARTHUR, Moultrie, IL
Built 1978 Load: 32.4 t ADT: 200
TR 17
FairOver: STREAM
2.0 MI NW ARTHUR, Moultrie, IL
Built 1981 Load: 32.4 t ADT: 200
TR 132
FairOver: HAMMOND MUTUAL DITCH
0.5 MI S OF HAMMOND, Moultrie, IL
Built 1986 Load: 32.4 t ADT: 50
TR 9
FairOver: NEUTRAL DITCH
3 MI N OF ARTHUR, Moultrie, IL
Built 1988 Load: 32.4 t ADT: 75
TR 172
FairOver: DRAINAGE DITCH
1 MI W OF ARTHUR, Moultrie, IL
Built 1990 Load: 32.4 t ADT: 175
TR 172
FairOver: DRAINAGE DITCH
1.8 MI NW OF ARTHUR, Moultrie, IL
Built 1996 Load: 32.4 t ADT: 50
TR 25
FairOver: JONATHON CREEK
4 MI W OF ARTHUR, Moultrie, IL
Built 1991 Load: 32.4 t ADT: 75
TR 10
FairOver: WILBORN CREEK
4.5 MI S OF BETHANY, Moultrie, IL
Built 1986 Load: 32.4 t ADT: 75
TR 4 A
FairOver: STREAM
2 MI S DALTON CITY, Moultrie, IL
Built 1991 Load: 32.4 t ADT: 25
TR 57
FairOver: MARROWBONE CREEK
3 MI S DALTON CITY, Moultrie, IL
Built 1992 Load: 32.4 t ADT: 50
TR 99
FairOver: MARROWBONE CREEK
1.7 MI SE BETHANY, Moultrie, IL
Built 2003 Load: 32.4 t ADT: 200
TR 42
FairOver: W OKAW RIVER
2.2 MI SE BETHANY, Moultrie, IL
Built 1988 Load: 32.4 t ADT: 100
TR 99 A
FairOver: ASA CREEK
1.6 MI N OF SULLIVAN, Moultrie, IL
Built 2000 Load: 32.4 t ADT: 75
TR 142 A
FairOver: LYNN CREEK
3.6 MI NW GAYS, Moultrie, IL
Built 1984 Load: 32.4 t ADT: 50
PROGRESS ST(MS 260
FairOver: LOWE DITCH #2
W EDGE OF ARTHUR, Moultrie, IL
Built 1994 Load: 32.4 t ADT: 1,400
ILL 2
FairOver: SILVER CREEK
3.8 MI N JCT ILL 64, Ogle, IL
Built 1924 Load: 32.4 t ADT: 4,850
IL 72
FairOver: LEAF RIVER
.7 MI W LEAF RIVER, Ogle, IL
Built 1929 Load: 32.4 t ADT: 1,550
IL 72
FairOver: LEAF RIVER
.5 MI E LEAF RIVER, Ogle, IL
Built 1985 Load: 32.4 t ADT: 1,700
WEST GROVE RD
FairOver: BRANCH LEAF RIVER
3.0 MI SE FORRESTON, Ogle, IL
Built 1962 Load: 32.4 t ADT: 200
EGAN RD.
FairOver: MILL CREEK
5.0 N.W. BYRON, Ogle, IL
Built 1962 Load: 32.4 t ADT: 50
GALENA TRAIL RD.
FairOver: BUFFALO CREEK
0.5 MI W POLO, Ogle, IL
Built 1963 Load: 32.4 t ADT: 150
COLUMBINE ROAD
FairOver: BRANCH LEAF RIVER
3 MI SE FORRESTON, Ogle, IL
Built 1972 Load: 32.4 t ADT: 75
MOWERS RD
FairOver: BR KILLBUCK CREEK
4 MI SE LINDENWOOD, Ogle, IL
Built 1977 Load: 32.4 t ADT: 50
OREGON TRAIL ROAD
FairOver: PINE CREEK
3.0 MI SW MT MORRIS, Ogle, IL
Built 1979 Load: 32.4 t ADT: 125
BLACKHAWK ROAD
FairOver: BR KYTE CREEK
2.0 MI E DAYSVILLE, Ogle, IL
Built 1979 Load: 32.4 t ADT: 100
FORK CREEK ROAD
FairOver: BR ELKHORN CREEK
4.0 MI N BROOKVILLE, Ogle, IL
Built 1981 Load: 32.4 t ADT: 50
ELKHORN RD
FairOver: ELKHORN CR
1.0 MI E BROOKVILLE, Ogle, IL
Built 1983 Load: 32.4 t ADT: 25
ROCK CITY ROAD
FairOver: MUD CREEK
2.2 MI NE ADELINE, Ogle, IL
Built 1981 Load: 32.4 t ADT: 50
BRUSH ROAD
FairOver: MUD CREEK
3.5 MI NW ADELINE, Ogle, IL
Built 1984 Load: 32.4 t ADT: 75
CHAMBERLAIN ROAD
FairOver: KILLBUCK CREEK
3.0 M NW CRESTON, Ogle, IL
Built 1981 Load: 32.4 t ADT: 25
OAK GROVE RD - TR
FairOver: MILL CREEK
5.5 MI NW OF BYRON, Ogle, IL
Built 1982 Load: 32.4 t ADT: 25
Showing 9,101-9,150 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.