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
POND RD
FairOver: MUD CREEK
N EDGE LEAF RIVER, Ogle, IL
Built 1986 Load: 32.4 t ADT: 50
GALE ROAD - TR 180
FairOver: GALE CREEK
2.0 MI W OF OREGON, Ogle, IL
Built 1982 Load: 32.4 t ADT: 125
OAK GROVE RD
FairOver: BR EAST FORK
3.5 MI N OF BYRON, Ogle, IL
Built 1994 Load: 32.4 t ADT: 25
MARRILL RD
FairOver: BLACK WALNUT CR
5 M SW STILLMAN VALL, Ogle, IL
Built 1984 Load: 32.4 t ADT: 275
ROCK ROAD
FairOver: MUD CREEK
2.5 M E MT MORRIS, Ogle, IL
Built 1983 Load: 32.4 t ADT: 175
HALDANE ROAD
FairOver: BR. PINE CREEK
4.3 MI E OF HALDANE, Ogle, IL
Built 1984 Load: 32.4 t ADT: 125
POND ROAD
FairOver: LEAF RIVER
2.5 W LEAF RIVER, Ogle, IL
Built 1985 Load: 32.4 t ADT: 50
EDGEWOOD ROAD
FairOver: BR. OF PINE CREEK
3 MI NE OF WOOSUNG, Ogle, IL
Built 1987 Load: 32.4 t ADT: 100
SPRUCE ROAD
FairOver: SEVEN MILE BRANCH
2.5 MI SE OF POLO, Ogle, IL
Built 1987 Load: 32.4 t ADT: 25
BROOKVILLE ROAD
FairOver: BR OF ELKHORN CR
3.4 MI N BROOKVILLE, Ogle, IL
Built 1986 Load: 32.4 t ADT: 25
GILLIS ROAD
FairOver: KILBUCK CREEK
3.2 MI N CRESTON, Ogle, IL
Built 1990 Load: 32.4 t ADT: 50
MC GREGER ROAD
FairOver: UNNAMED STREAM
5 MI. NE. OF BYRON, Ogle, IL
Built 1991 Load: 32.4 t ADT: 200
CANADA RD
FairOver: TRIB. OF PINE CREEK
4 MI W OF MT MORRIS, Ogle, IL
Built 1998 Load: 32.4 t ADT: 25
EDSON ROAD
FairOver: S BR KISHWAUKEE RIV.
6.2 MI NE MONROE CTR, Ogle, IL
Built 1993 Load: 32.4 t ADT: 100
TWOMBLY ROAD
FairOver: KILBUCK CREEK
1.5 MI NE CRESTON, Ogle, IL
Built 1993 Load: 32.4 t ADT: 75
SILVER CREEK ROAD
FairOver: LEAF RIVER
2.0 MI SE LEAF RIVER, Ogle, IL
Built 2001 Load: 32.4 t ADT: 50
HUSKING PEG RD
FairOver: BR. KYTE CREEK
2.5 MI S CHANA, Ogle, IL
Built 2001 Load: 32.4 t ADT: 100
BURLINGTON RD
FairOver: BNSF RAILROAD
.29MI S PINES RD, Ogle, IL
Built 2007 Load: 32.4 t ADT: 25
COLUMBINE RD
FairOver: BRANCH LEAF RIVER
1.8 M NE FORRESTON, Ogle, IL
Built 1976 Load: 32.4 t ADT: 100
MOWERS RD
FairOver: BR KILBUCK CREEK
.6 MI E LYNNVILLE RD, Ogle, IL
Built 1976 Load: 32.4 t ADT: 50
MOWERS ROAD
FairOver: BR. KILBUCK CREEK
5 MI. SE. LINDENWOOD, Ogle, IL
Built 1992 Load: 32.4 t ADT: 50
SOUTH MAIN ST
FairOver: KYTE CREEK
IN ROCHELLE, Ogle, IL
Built 1990 Load: 32.4 t ADT: 1,850
DEMENT ROAD
FairOver: UP RR & RILEY DITCH
SW SEC 20 T40N R2E, Ogle, IL
Built 2001 Load: 32.4 t ADT: 1,950
WH. PINES PK RD /O
FairOver: PINES CREEK
.14 MI N. PINES ROAD, Ogle, IL
Built 1984 Load: 32.4 t ADT: 200
WB I-74 RP TO GALE
FairOver: DRY RUN CR
0.32 W OF GALE AVE, Peoria, IL
Built 1965 Load: 32.4 t ADT: 1,900
FAU 6653-FOREST HI
FairOver: DRY RUN CREEK
UNDER FORESTHILL E, Peoria, IL
Built 1965 Load: 32.4 t ADT: 12,200
ILL 6
FairOver: STREAM
NE-2-T9NR7E, Peoria, IL
Built 1982 Load: 32.4 t ADT: 21,100
US 150
FairOver: WALNUT CREEK
1 MI W OF BRIMFIELD, Peoria, IL
Built 1992 Load: 32.4 t ADT: 1,400
RAMP B-3
FairOver: DRY RUN CREEK
US150 I74 Rmp Peoria, Peoria, IL
Built 2007 Load: 32.4 t ADT: 6,000
RP 23.58,I-74 WB
FairOver: TRIB W. BR DRY RUN
WB 74 TO UNIVERSITY, Peoria, IL
Built 2007 Load: 32.4 t ADT: 2,750
US 150
FairOver: FRENCH CR
2 MI S OF LAURA, Peoria, IL
Built 2002 Load: 32.4 t ADT: 3,400
Orange Prairie Roa
FairOver: FARGO RUN
1.09 Mi N of US 150, Peoria, IL
Built 2014 Load: 32.4 t ADT: 4,750
HALLOCK HOLLOW RD
FairOver: HALLOCK HOLLOW CREEK
SE1/4 27 HALLOCK TWP, Peoria, IL
Built 1958 Load: 32.4 t ADT: 500
SMITHVILLE RD
FairOver: LARGENT CREEK
SE 1/4 SEC24 LOGAN, Peoria, IL
Built 1967 Load: 32.4 t ADT: 1,300
BLUE RIDGE ROAD
FairOver: HENRY CREEK
NW1/4-24-HALLOCK, Peoria, IL
Built 1980 Load: 32.4 t ADT: 700
GRAHAM CHAPEL ROAD
FairOver: BR KICKAPOO CREEK
NE1/4 SEC 19 ELMWOOD, Peoria, IL
Built 1980 Load: 32.4 t ADT: 250
MC CULLOUGH
FairOver: BR LA MARSH CREEK
SW1/4 8 HOLLIS TWP, Peoria, IL
Built 1985 Load: 32.4 t ADT: 475
SMITHVILLE RD
FairOver: E BR LAMARSH CR
SE-21-T8NR7E, Peoria, IL
Built 1987 Load: 32.4 t ADT: 2,650
MC CULLOUGH ROAD
FairOver: BR LA MARSH CREEK
SE 1/4 8 HOLLIS TWP, Peoria, IL
Built 1988 Load: 32.4 t ADT: 475
STREITMATTER RD
FairOver: PRINCE RUN
SW-1-T11NR6E, Peoria, IL
Built 1988 Load: 32.4 t ADT: 50
BELL SCHOOL ROAD
FairOver: NILE CREEK
NE-33-T10NR5E, Peoria, IL
Built 1991 Load: 32.4 t ADT: 425
CEDAR HILLS DR
FairOver: KICKAPOO CREEK
SE1/4 14 RADNOR TWP., Peoria, IL
Built 1993 Load: 32.4 t ADT: 3,550
OLD GALENA RD
FairOver: BR. HALLOCK CREEK
NW-26-T11NR8E, Peoria, IL
Built 1993 Load: 32.4 t ADT: 1,050
GALENA ROAD
FairOver: BR HALLOCK HOLLOW CR
SE-27-T11NR8E, Peoria, IL
Built 1994 Load: 32.4 t ADT: 1,600
PRINCEVILLE-JUBILE
FairOver: PRINCE RUN
CTR-24-PRINCEVILLE, Peoria, IL
Built 2003 Load: 32.4 t ADT: 1,600
TODD SCHOOL ROAD
FairOver: BR COPPERAS CREEK
NE1/4-6-TIMBER TWP, Peoria, IL
Built 2010 Load: 32.4 t ADT: 150
SMITHVILLE WEST RO
FairOver: E BR COPPERAS CREEK
SE1/4 30 LOGAN TWP, Peoria, IL
Built 2013 Load: 32.4 t ADT: 575
Creek Road - CH R5
FairOver: Kickapoo Creek
Pottstown, Peoria, IL
Built 2014 Load: 32.4 t ADT: 2,000
CH D29
FairOver: Branch Jubilee Creek
SW1/4-16-Jubilee, Peoria, IL
Built 2014 Load: 32.4 t ADT: 425
CH R30 EDEN RD
FairOver: NIXON RUN
SW 1/4 SEC16 T9N R6E, Peoria, IL
Built 2016 Load: 32.4 t ADT: 350
Showing 9,151-9,200 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.