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
ILL 160
FairOver: N TRIB TO BR LAKE CR
.5 MI N NEW BADEN, Clinton, IL
Built 1955 Load: 32.4 t ADT: 4,150
TR 220
FairOver: PRAIRE CREEK BRANCH
2.5 MI SE SHATTUC, Clinton, IL
Built 1948 Load: 32.4 t ADT: 750
TR 193/HUGO ROAD
FairOver: LOST CREEK
1 MI WEST SAND PIT, Clinton, IL
Built 1979 Load: 32.4 t ADT: 50
TR 151/ROCKY FORD
FairOver: SUGAR CREEK
3 MI SE TRENTON, Clinton, IL
Built 1983 Load: 32.4 t ADT: 425
TR 177/COURT ROAD
FairOver: SUGAR CREEK
1.0 MI. N.W. ALBERTS, Clinton, IL
Built 1984 Load: 32.4 t ADT: 225
TR 193/HUGO ROAD
FairOver: PRAIRIE CREEK
1 MILE NE HOFFMAN, Clinton, IL
Built 1987 Load: 32.4 t ADT: 250
TR 184A/CREEK RD
FairOver: LOST CREEK
1140 N CREEK RD, Clinton, IL
Built 1997 Load: 32.4 t ADT: 75
TR 193 HUGO RD
FairOver: PRAIRIE CREEK
2 MILES NW OF CENTRA, Clinton, IL
Built 1998 Load: 32.4 t ADT: 175
SHATTUC RD/TR 206A
FairOver: COLES CREEK
2MI N OF SHATTUC, Clinton, IL
Built 2001 Load: 32.4 t ADT: 275
TR 176/MONKEN RD
FairOver: LOST CREEK BRANCH
2 MI W. OF HOFFMAN, Clinton, IL
Built 2001 Load: 32.4 t ADT: 50
TR 17 S
FairOver: BRANCH OF CARLYLE
1MI SW OF KEYSPORT, Clinton, IL
Built 2003 Load: 32.4 t ADT: 200
Hahn Rd
FairOver: LOST CREEK
1 MI NE SHATTUC, Clinton, IL
Built 2012 Load: 32.4 t ADT: 25
TR 65/PEEK ROAD
FairOver: BRANCH OF BEAVER CK
1 MI S.E. STOLLETOWN, Clinton, IL
Built 1976 Load: 32.4 t ADT: 75
ST. ROSE RD/FAS 77
FairOver: DITCH
1590 ST. ROSE RD., Clinton, IL
Built 1901 Load: 32.4 t ADT: 3,200
FAS 1781/CH2-HOPEW
FairOver: ALLEN BRANCH
2.5M SW OF KEYESPORT, Clinton, IL
Built 1982 Load: 32.4 t ADT: 675
DAMIANSVILLE RD
FairOver: SUGAR CREEK
.5 MI W DAMIANSVILLE, Clinton, IL
Built 2004 Load: 32.4 t ADT: 550
AVISTON RD/FAS 785
FairOver: LAKE BRANCH
2 MI SOUTH AVISTON, Clinton, IL
Built 1990 Load: 32.4 t ADT: 2,650
CH 19
FairOver: LOST CREEK
1 MILE NE OF SHATTUC, Clinton, IL
Built 1998 Load: 32.4 t ADT: 325
NORTH OAK STREET
FairOver: BRANCH OF SUGAR CK
N. OAK ST./TRENTON, Clinton, IL
Built 1991 Load: 32.4 t ADT: 75
FAP 320(IL 121)
FairOver: STREAM
2.1 MI E OF CO LINE, Coles, IL
Built 1995 Load: 32.4 t ADT: 4,100
TR 258
FairOver: WHETSTONE CREEK
4 MI N OF HUTTON, Coles, IL
Built 1974 Load: 32.4 t ADT: 150
CH 5(FAS 676)
FairOver: HURRICANE CREEK
1.5 MI S OF HUTTON, Coles, IL
Built 1977 Load: 32.4 t ADT: 100
WESTFIELD RD(MS320
FairOver: POLECAT CREEK
SE EDGE ASHMORE, Coles, IL
Built 1979 Load: 32.4 t ADT: 225
TR 194
FairOver: CASSEL CREEK
2.5 MI S CHARLESTON, Coles, IL
Built 1980 Load: 32.4 t ADT: 175
CH 13
FairOver: CRABAPPLE CREEK
4.0 MI NW MATTOON, Coles, IL
Built 1980 Load: 32.4 t ADT: 200
TR 184
FairOver: S FORK INDIAN CREEK
5 MI E OF LERNA, Coles, IL
Built 1980 Load: 32.4 t ADT: 75
TR 100A
FairOver: FLAT BRANCH CREEK
0.5 MI E HUMBOLDT, Coles, IL
Built 1981 Load: 32.4 t ADT: 75
TR 324
FairOver: LITTLE EMBARRAS R
1 MI SE OAKLAND, Coles, IL
Built 1981 Load: 32.4 t ADT: 125
CH 7
FairOver: RILEY CREEK
2 MI W CHARLESTON, Coles, IL
Built 1981 Load: 32.4 t ADT: 600
TR 55
FairOver: GREASY CREEK
2 MI W BUSHTON, Coles, IL
Built 1981 Load: 32.4 t ADT: 125
TR 119
FairOver: CRABAPPLE CREEK
2.5 MI N MATTOON, Coles, IL
Built 1981 Load: 32.4 t ADT: 100
FAU 7624(TR 175C)
FairOver: CASSEL CREEK
.5 MI W CHARLESTON, Coles, IL
Built 1982 Load: 32.4 t ADT: 550
TR 23
FairOver: GREASY CREEK
1.2 MI NW RARDIN, Coles, IL
Built 1981 Load: 32.4 t ADT: 50
TR 195
FairOver: LITTLE WABASH RIVER
2.0 MI W MATTOON, Coles, IL
Built 1982 Load: 32.4 t ADT: 25
TR 68
FairOver: CLEAR CREEK
1 MI N OF TRILLA, Coles, IL
Built 1982 Load: 32.4 t ADT: 400
TR 273
FairOver: CLEAR CREEK
0.8 MI N TRILLA, Coles, IL
Built 1982 Load: 32.4 t ADT: 100
TR 5
FairOver: HOG BRANCH CREEK
1.0 MI N OAKLAND, Coles, IL
Built 1982 Load: 32.4 t ADT: 50
TR 286
FairOver: LITTLE EMBARRAS R
4 MI SW OF OAKLAND, Coles, IL
Built 1987 Load: 32.4 t ADT: 125
TR 332 A
FairOver: LITTLE EMBARRAS R
3 MI SE OAKLAND, Coles, IL
Built 1985 Load: 32.4 t ADT: 75
TR 234
FairOver: GREASY CREEK
1.5 NW RARDIN, Coles, IL
Built 1982 Load: 32.4 t ADT: 50
TR 159
FairOver: RATTLESNAKE CREEK
2.5 MI E CHARLESTON, Coles, IL
Built 1983 Load: 32.4 t ADT: 200
TR 106A
FairOver: RILEY CREEK
3 MI E MATTOON, Coles, IL
Built 1982 Load: 32.4 t ADT: 50
TR 1
FairOver: EMBARRAS RIVER
1.5 MI N OAKLAND, Coles, IL
Built 1982 Load: 32.4 t ADT: 250
CH 17
FairOver: EMBARRAS RIVER
2.5 MI E CHARLESTON, Coles, IL
Built 1985 Load: 32.4 t ADT: 700
TR 195
FairOver: BRANCH LITTLE WABASH
1 MI SW MATTOON, Coles, IL
Built 1985 Load: 32.4 t ADT: 50
TR 43
FairOver: FLAT BRANCH
4.7 MI E OF HUMBOLDT, Coles, IL
Built 1986 Load: 32.4 t ADT: 75
TR 276
FairOver: DUDLY BR OF POLECAT
1.25 MI SW ASHMORE, Coles, IL
Built 1986 Load: 32.4 t ADT: 100
FAS 1672(CH 16)
FairOver: FLAT BRANCH
0.1 E OF HUMBOLDT, Coles, IL
Built 1984 Load: 32.4 t ADT: 275
CH 7
FairOver: UNION DRAIN DIT #3
2.5 MI W CHARLESTON, Coles, IL
Built 1987 Load: 32.4 t ADT: 375
FAS 1666(CH 9)
FairOver: S FORK INDIAN CREEK
4 MI E OF LERNA, Coles, IL
Built 1986 Load: 32.4 t ADT: 450
Showing 7,551-7,600 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.