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 109
GoodOver: DRAINAGE DITCH
2.5 MI N ATKINSON, Henry, IL
Built 2018 Load: 36.9 t ADT: 50
CH 4
GoodOver: BRANCH OF LANGAN CRK
6 MI E. OF FORD CO., Iroquois, IL
Built 1992 Load: 36.9 t ADT: 150
TR 159B (WAS OR 7)
GoodOver: DRAINAGE DITCH
0.81 MI NWOF US 24, Iroquois, IL
Built 1986 Load: 36.9 t ADT: 275
TR 313
GoodOver: HAPPY HOLLOW CREEK
1 MI S GORHAM, Jackson, IL
Built 1992 Load: 36.9 t ADT: 25
US 45
GoodOver: LITTLE CASHE CREEK
0.2 MI S OF IL 146, Johnson, IL
Built 2021 Load: 36.9 t ADT: 2,000
TR 212
GoodOver: OTTER POND DR DITCH
3 MI NE LAWREN'VILLE, Lawrence, IL
Built 1999 Load: 36.9 t ADT: 225
US 52
GoodOver: 3 MILE BRANCH CREEK
4.5 MI SE OF DIXON, Lee, IL
Built 1990 Load: 36.9 t ADT: 2,900
IL 38
GoodOver: CHAMBERLIN CREEK
4 MI. W. FRANKLIN GR, Lee, IL
Built 1994 Load: 36.9 t ADT: 2,750
IL 47 FAP 326
GoodOver: 5 MILE CR
0.16 MI. S. RT116, Livingston, IL
Built 1993 Load: 36.9 t ADT: 2,100
TR 268C (400N)
GoodOver: Trib to Vermilion
435 N, 3200 E, Livingston, IL
Built 2021 Load: 36.9 t ADT: 50
CH 6
GoodOver: N FORK LAKE FORK CK
1.5 MI NW LATHAM, Logan, IL
Built 1957 Load: 36.9 t ADT: 300
FAI 255 RAMP 6
GoodOver: DITCH
NB 255 TO WB 55/70, Madison, IL
Built 1986 Load: 36.9 t ADT: 450
FAS 1937 Troy-O'Fl
GoodOver: Mill Creek
3.3 Mi S of Troy, Madison, IL
Built 2022 Load: 36.9 t ADT: 8,050
US 50
GoodOver: ICRR
Odin, Marion, IL
Built 1998 Load: 36.9 t ADT: 6,700
US 50
GoodOver: TOWN CREEK
W CE&I RR IN SALEM, Marion, IL
Built 1994 Load: 36.9 t ADT: 6,750
CH-5
GoodOver: LOUSE CREEK
3 MI E PATOKA, Marion, IL
Built 1983 Load: 36.9 t ADT: 225
ILL 10
GoodOver: ROSS & TYRELL DITCH
.5 MI E EASTON, Mason, IL
Built 1988 Load: 36.9 t ADT: 1,200
ILL 10
GoodOver: DRAINAGE DITCH
W. EDGE OF TEHERAN, Mason, IL
Built 1988 Load: 36.9 t ADT: 1,200
CARMACK ROAD
GoodOver: RUSH CREEK
0.5 W COX ROAD, McHenry, IL
Built 1993 Load: 36.9 t ADT: 250
DEERPASS ROAD
GoodOver: KISH RIVER N CHANNEL
0.7 MI N IL RTE 176, McHenry, IL
Built 2019 Load: 36.9 t ADT: 1,650
Ramp from IL 3 NB
GoodOver: PALMER CREEK
0.8 mi S of I-255, Monroe, IL
Built 1991 Load: 36.9 t ADT: 1,750
IL 267
GoodOver: TRIB MAUVAISE TERRE
1.2M N I72/US36 INT, Morgan, IL
Built 1989 Load: 36.9 t ADT: 9,100
TR 174
GoodOver: Snake Creek Branch
1.50 mi W IL 78, Morgan, IL
Built 2020 Load: 36.9 t ADT: 100
FAS 637(MAIN ST)
GoodOver: MARROWBONE CREEK
BETHANY-MAIN ST., Moultrie, IL
Built 1989 Load: 36.9 t ADT: 950
FAS 1663
GoodOver: LAKE SHELBYVILLE
2 MI S KIRKSVILLE, Moultrie, IL
Built 1969 Load: 36.9 t ADT: 500
US 52
GoodOver: ELKHORN CREEK
0.5 MI S OF ILL 64, Ogle, IL
Built 2023 Load: 36.9 t ADT: 800
PINES ROAD
GoodOver: TRIB OF GALE CREEK
1 MI W OF OREGON, Ogle, IL
Built 2005 Load: 36.9 t ADT: 1,900
ILL 8
GoodOver: TRIB OF KICKAPOO CR
2 MI NW OF POTTSTOWN, Peoria, IL
Built 1991 Load: 36.9 t ADT: 2,550
TRIGGER ROAD-CH R4
GoodOver: FARGO RUN
CENTER 3 KICKAPOO T, Peoria, IL
Built 1966 Load: 36.9 t ADT: 1,850
TR 109
GoodOver: GALUM CREEK
1.3 MI E OF CH 12, Perry, IL
Built 1900 Load: 36.9 t ADT: 125
TR 80
GoodOver: STREAM
1.5 MI NW GALESVILLE, Piatt, IL
Built 1986 Load: 36.9 t ADT: 25
TR 328
GoodOver: S Fk McKee Trib
1.06 Mi S TR 73, Pike, IL
Built 2021 Load: 36.9 t ADT: 50
ILL 34
GoodOver: UNNAMED STREAM
2.1 MI S SALINE CO, Pope, IL
Built 2011 Load: 36.9 t ADT: 1,400
BLUFF RD/MODOC RD
GoodOver: PHEGLEY CREEK
MODOC, Randolph, IL
Built 1999 Load: 36.9 t ADT: 400
CH-22 (Percy Rd)
GoodOver: Cox Creek
3MI SO OF PERCY, Randolph, IL
Built 2002 Load: 36.9 t ADT: 150
TR 232
GoodOver: ROCKCASTLE CREEK
TR232 OVERROCK CASTL, Randolph, IL
Built 1982 Load: 36.9 t ADT: 225
TR 199A
GoodOver: MODOC CREEK
.5MI N MODOC, Randolph, IL
Built 1901 Load: 36.9 t ADT: 25
MOLINE RD (OLD IL
GoodOver: CANOE CREEK
2 MI. SW. HILLSDALE, Rock Island, IL
Built 1992 Load: 36.9 t ADT: 600
FAS 625
GoodOver: BRUSH CREEK
0.1 MI W DIVERNON, Sangamon, IL
Built 1953 Load: 36.9 t ADT: 1,650
IL 100
GoodOver: COAL CREEK
.05M S OLD67 FREDRCK, Schuyler, IL
Built 1999 Load: 36.9 t ADT: 1,350
FAS 606
GoodOver: MAUVAISE TERRE CREEK
W CITY LIMITS EXETER, Scott, IL
Built 1979 Load: 36.9 t ADT: 400
FAP 325(IL 16)
GoodOver: LAKE PANA
3 MI W TOWER HILL, Shelby, IL
Built 1992 Load: 36.9 t ADT: 4,500
FAI 64 EB
GoodOver: Abandoned Roadway C
0.13 E OF 18TH ST, St. Clair, IL
Built 1974 Load: 36.9 t ADT: 37,900
MORRIS MILL RD-TR9
GoodOver: CRANE CREEK
SW-17-T22NR4W, Tazewell, IL
Built 1999 Load: 36.9 t ADT: 50
FAS 926-CH 14
GoodOver: BIG CREEK
1 MI NE OF DONGOLA, Union, IL
Built 1991 Load: 36.9 t ADT: 1,000
FAS 512(CH 8)
GoodOver: STREAM
3 MI W OF CATLIN, Vermilion, IL
Built 1992 Load: 36.9 t ADT: 2,700
ILL 177
GoodOver: TRIB TO KASKASKIA R
3.5M E OF I-64, Washington, IL
Built 1995 Load: 36.9 t ADT: 1,650
IL 177
GoodOver: W TRIB GRAND PT CRK
7 MI EAST JCT IL 127, Washington, IL
Built 1995 Load: 36.9 t ADT: 1,600
TR-249
GoodOver: TRIB ELM RIV DRN DT
2 MI S MT ERIE, Wayne, IL
Built 1909 Load: 36.9 t ADT: 75
FAS 882
GoodOver: SKILLET FORK
2 MI E SPRINGERTON, White, IL
Built 2008 Load: 36.9 t ADT: 50
Showing 22,701-22,750 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |