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
CREEK RD
Structurally DeficientOver: KICKAPOO CREEK TRIB.
NW-QTR-13-LIMESTONE, Peoria, IL
Built 1991 Load: 14.3 t ADT: 1,900
TR 224
Structurally DeficientOver: MIDDLE CRK.
4 MI N NEWMANSVILLE, Cass, IL
Built 1963 Load: 14.6 t ADT: 75
QUENTIN RD
Structurally DeficientOver: BR OF SALT CREEK
0.2 M N DUNDEE P18, Cook, IL
Built 1927 Load: 14.6 t ADT: 18,200
TR 91 PATTON
Structurally DeficientOver: WALL TOWN DR DITCH
1540E,500N, Ford, IL
Built 1974 Load: 14.6 t ADT: 375
TR 11 MONA
Structurally DeficientOver: KELLY CREEK
1560E 3400N, Ford, IL
Built 1973 Load: 14.6 t ADT: 75
SBI 13 (UNMARKED)
Structurally DeficientOver: STREAM
1 MI W OF ILL 1, Gallatin, IL
Built 1920 Load: 14.6 t ADT: 25
BUNKER HILL ROAD
Structurally DeficientOver: DRAINAGE DITCH
1.8 MI WEST OF IL 23, McHenry, IL
Built 1970 Load: 14.6 t ADT: 100
TR 329
Structurally DeficientOver: SPOON RIVER EAST FOR
1 MI SE OF NEPONSET, Bureau, IL
Built 1959 Load: 14.9 t ADT: 25
TR 7 MONA
Structurally DeficientOver: STREAM
1580E,3600N, Ford, IL
Built 1967 Load: 15.2 t ADT: 25
TR 91 B
Structurally DeficientOver: PIKE CREEK
2.8 MI. E. ILL 1, Iroquois, IL
Built 1958 Load: 15.2 t ADT: 200
COUNTY HIGHWAY 2
Structurally DeficientOver: GALUM CREEK
NE 1/4 SEC 1-7-3, Jackson, IL
Built 1977 Load: 15.2 t ADT: 250
CH 13
Structurally DeficientOver: PIKE CR
1.1 MI NE MOMENCE, Kankakee, IL
Built 1960 Load: 15.2 t ADT: 850
CH 23 EXT
Structurally DeficientOver: ILL CENTRAL RR
WALNUT ST OVER IC RR, LaSalle, IL
Built 1942 Load: 15.6 t ADT: 1,600
MAEYSTOWN MSS 1030
Structurally DeficientOver: MAEYSTOWN CREEK
SW CL MAEYSTOWN, Monroe, IL
Built 1941 Load: 15.6 t ADT: 225
TR 141
Structurally DeficientOver: BRUSHY BRANCH
4 MI SE STONINGTON, Christian, IL
Built 1956 Load: 15.9 t ADT: 20
STONEBRIDGE ROAD
Structurally DeficientOver: HICKORY CREEK TRIB
0.01 M N OF IRONWOOD, Will, IL
Built 1980 Load: 15.9 t ADT: 275
TR 166
Structurally DeficientOver: MCCURDY BRANCH
2.1 MI S VERSAILLES, Brown, IL
Built 1915 Load: 16.2 t ADT: 50
IL 116
Structurally DeficientOver: SPOON RIVER
W EDGE LONDON MILLS, Fulton, IL
Built 1979 Load: 16.2 t ADT: 1,600
TOWER ROAD
Structurally DeficientOver: CC&P RR
500' S. Bahr Rd., Kane, IL
Built 1945 Load: 16.2 t ADT: 425
FIREHOUSE RD(1300)
Structurally DeficientOver: LONG CREEK
CITY OF LONG CREEK, Macon, IL
Built 1960 Load: 16.2 t ADT: 225
TR 374
Structurally DeficientOver: HURRICANE CR
2.8 MI SE WITT, Montgomery, IL
Built 1900 Load: 16.2 t ADT: 25
TR 182
Structurally DeficientOver: BR NORTH CREEK
1.25 MI NE HUEGELY, Washington, IL
Built 1920 Load: 16.2 t ADT: 10
TR 111A
Structurally DeficientOver: SPRING BRANCH
2.5 M W. SHARPSBURG, Christian, IL
Built 1954 Load: 16.5 t ADT: 175
EAST LAKE AVE EXT
Structurally DeficientOver: W F N BR CHI RIV
0.2 M W ILL 43 P14, Cook, IL
Built 1961 Load: 16.5 t ADT: 22,400
TR I16
Structurally DeficientOver: W FK OF BEAR CREEK
1.0 E ELVASTON, Hancock, IL
Built 1969 Load: 16.5 t ADT: 50
TR 140
Structurally DeficientOver: TRIB PRAIRE CR
.8 MI S OF FAS 321, Iroquois, IL
Built 1962 Load: 16.5 t ADT: 75
CO HWY 1
Structurally DeficientOver: WHITE WALNUT CREEK
1.7 MI N ILL 154, Perry, IL
Built 1959 Load: 16.5 t ADT: 600
TR 191
Structurally DeficientOver: BRANCH OF BEAVER CR
3M SW GREENVILLE, Bond, IL
Built 1901 Load: 16.8 t ADT: 25
TWP RD 51
Structurally DeficientOver: GREEN RIVER
2.5 MI NE NEW BEDFOR, Bureau, IL
Built 1974 Load: 16.8 t ADT: 75
FAS-39 (HUNTER ROA
Structurally DeficientOver: Little Beaver Creek
0.5 W WHITE OAKS RD, McHenry, IL
Built 1963 Load: 16.8 t ADT: 1,650
GOEKE ROAD
Structurally DeficientOver: PINK CREEK
100FT N BRICK SCH RD, Winnebago, IL
Built 1999 Load: 16.8 t ADT: 75
CAPRON RD
Structurally DeficientOver: PISCASAW CREEK
2.5 MI S CAPRON, Boone, IL
Built 1958 Load: 17.2 t ADT: 150
CH 11
Structurally DeficientOver: HENDERSON CR
S.CTR-23-T12NR4W, Henderson, IL
Built 1978 Load: 17.2 t ADT: 50
CH 19
Structurally DeficientOver: S. EDWARDS RIVER
6 MI. S.W. CAMBRIDGE, Henry, IL
Built 1958 Load: 17.2 t ADT: 325
TR 89
Structurally DeficientOver: PRAIRIE CR
1.7M W ILL49, Iroquois, IL
Built 1976 Load: 17.2 t ADT: 25
NELSON RD
Structurally DeficientOver: JACKSON CREEK
.4M N OF LARAWAY RD, Will, IL
Built 1977 Load: 17.2 t ADT: 2,950
TOWNSHIP RD 97A
Structurally DeficientOver: W. BUREAU CR.
4 MI. W. OF KASBEER, Bureau, IL
Built 1949 Load: 17.5 t ADT: 125
207TH STREET
Structurally DeficientOver: BUTTERFIELD CR
1.4 M E I57 P21, Cook, IL
Built 1964 Load: 17.5 t ADT: 2,450
17TH AV
Structurally DeficientOver: SILVER CREEK
100' S IL-64, Cook, IL
Built 1949 Load: 17.5 t ADT: 750
TIMBER LANE
Structurally DeficientOver: TRIB W. BR. DUPAGE R
0.34 MI E. FAIR OAKS, DuPage, IL
Built 1972 Load: 17.5 t ADT: 450
TR 187
Structurally DeficientOver: LITTLE PIASA CK
1.2 M SW NEW DELHI, Jersey, IL
Built 1972 Load: 17.5 t ADT: 500
LIMEKILN ROAD
Structurally DeficientOver: MUD CREEK
3 MI E MT MORRIS, Ogle, IL
Built 1981 Load: 17.5 t ADT: 250
GLEASMAN ROAD
Structurally DeficientOver: UNNAMED CREEK
0.2 MI E ROCKTON AVE, Winnebago, IL
Built 1935 Load: 17.5 t ADT: 800
TR-66 (Mill Road)
Structurally DeficientOver: BNSF RR
2 MI NE ARGO FAY, Carroll, IL
Built 1920 Load: 17.8 t ADT: 50
TR 30A(STRAWN RD)
Structurally DeficientOver: SOUTH FORK CREEK
3.9 MI NW WARRENSBUR, Macon, IL
Built 1909 Load: 17.8 t ADT: 25
FAP 64 WB Adams S
Structurally DeficientOver: BNSF & Abandoned UP RR
W CL OF PEORIA, Peoria, IL
Built 1936 Load: 17.8 t ADT: 18,000
IL 96
Structurally DeficientOver: LEVEE
.3M SE US 54-ATLAS, Pike, IL
Built 1956 Load: 17.8 t ADT: 1,200
IL 8/ IL 116
Structurally DeficientOver: ILLINOIS RIV, BNSF, T&P
CEDAR ST AT PEORIA, Tazewell, IL
Built 1932 Load: 17.8 t ADT: 12,400
2ND STREET
Structurally DeficientOver: DIEHL CREEK
MORRISONVILLE, Christian, IL
Built 1930 Load: 18.1 t ADT: 50
TR 3 A-CUMB CO
Structurally DeficientOver: BUTTERMILK DITCH
PARADISE, Coles, IL
Built 1981 Load: 18.1 t ADT: 50
Showing 27,251-27,300 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 |