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
FAS-806
FairOver: WOLF PRAIRIE DITCH
6 MI S BRIDGEPORT, Lawrence, IL
Built 1955 Load: 21.7 t ADT: 750
FAS-807
FairOver: BRANCH LITTLE BONPAS
7 MI S SUMNER, Lawrence, IL
Built 1931 Load: 21.7 t ADT: 775
TR-104
FairOver: MUDDY CREEK
1 MI ENE PETROLIA, Lawrence, IL
Built 1967 Load: 21.7 t ADT: 75
MCGIRR RD
FairOver: FRANKLIN CREEK
0.8 MI E WHITNEY RD, Lee, IL
Built 1969 Load: 21.7 t ADT: 25
CO HWY 32 FAS 1348
FairOver: SHORT POINT CR
2 MI NW FLANAGAN, Livingston, IL
Built 1927 Load: 21.7 t ADT: 350
FAS 731
FairOver: SUGAR CREEK
2 MI. W. VIRDEN, Macoupin, IL
Built 1932 Load: 21.7 t ADT: 650
IL 37 (FAS 2826)
FairOver: RACCOON CREEK SOUTH
1.4 MI S ILL-161, Marion, IL
Built 1930 Load: 21.7 t ADT: 4,500
TR-107
FairOver: SKILLET FORK
2.5 MI E FORBES S P, Marion, IL
Built 1909 Load: 21.7 t ADT: 50
ILL 145
FairOver: BARNES CREEK
5.6 MI S POPE CO, Massac, IL
Built 1932 Load: 21.7 t ADT: 2,550
MARION ROAD
FairOver: BEAR CREEK
1 MI S BIG BAY, Massac, IL
Built 1968 Load: 21.7 t ADT: 75
TR 126
FairOver: DAVIS BAYOU
2.5 MI E OF US 45, Massac, IL
Built 1990 Load: 21.7 t ADT: 75
TR 105
FairOver: BOLIN BRANCH
4 MI NE SULLIVAN, Moultrie, IL
Built 1959 Load: 21.7 t ADT: 150
LANARK ROAD
FairOver: ELKHORN CREEK
5 MI. SW. FORRESTON, Ogle, IL
Built 1995 Load: 21.7 t ADT: 200
MERIDIAN RD
FairOver: BR. STILLMAN CREEK
4 MI S STILLMAN VAL., Ogle, IL
Built 1962 Load: 21.7 t ADT: 900
ILL 8
FairOver: NIXON RUN CREEK
4.75 MI W OF EDWARDS, Peoria, IL
Built 1995 Load: 21.7 t ADT: 1,850
TR 73
FairOver: BRANCH MCKEE CREEK
1.75 MI SW PERRY, Pike, IL
Built 1974 Load: 21.7 t ADT: 50
CH 2(FAS 650)
FairOver: WILBURN CREEK
4 MI N OF FINDLAY, Shelby, IL
Built 1967 Load: 21.7 t ADT: 450
W. STEPHENSON ST.
FairOver: BR OF YELLOW CREEK
5.0 MI W OF FREEPORT, Stephenson, IL
Built 1969 Load: 21.7 t ADT: 125
TR 430
FairOver: EAST BRANCH
4 MI NE ALVIN, Vermilion, IL
Built 1897 Load: 21.7 t ADT: 25
TR 7
FairOver: DUCK CR
SE-6-T12NR3W, Warren, IL
Built 1956 Load: 21.7 t ADT: 50
TR 140
FairOver: BR OF LOCUST CREEK
5 MI SW NASHVILLE, Washington, IL
Built 1915 Load: 21.7 t ADT: 75
MEREDOSIA ROAD
FairOver: DRAINAGE DITCH
2 MI SOUTH OF ALBANY, Whiteside, IL
Built 1956 Load: 21.7 t ADT: 250
I- 57
FairOver: ROCK CREEK
12.5 M S OF US 30, Will, IL
Built 1967 Load: 21.7 t ADT: 28,800
YALE BRIDGE RD
FairOver: SUGAR RIVER
1.7 MI E WHEELER RD, Winnebago, IL
Built 1953 Load: 21.7 t ADT: 325
CEMETERY ROAD
FairOver: UNAMD CREEK DITCH
2.64 MI E OF ILL 70, Winnebago, IL
Built 1954 Load: 21.7 t ADT: 575
FAS 585
FairOver: CAMP CRK
1 MI NO VERSAILLES, Brown, IL
Built 1936 Load: 22.0 t ADT: 250
S SUNSHINE ROAD
FairOver: EAGLE CREEK
2 MI NE MILLEDGEVILL, Carroll, IL
Built 1953 Load: 22.0 t ADT: 100
US 50
FairOver: SUGAR CREEK
3 MI E OF TRENTON, Clinton, IL
Built 1973 Load: 22.0 t ADT: 7,700
TR 5/KEYESPORT ROA
FairOver: BRANCH OF BEAVER CK
BOND CO LINE, Clinton, IL
Built 1948 Load: 22.0 t ADT: 375
TR 184A/CREEK ROAD
FairOver: PRAIRIE CREEK
.5 N.E. HOFFMAN, Clinton, IL
Built 1901 Load: 22.0 t ADT: 25
CH 4 (FAS 537)
FairOver: TRENKLE SLOUGH
.8 MI S FARMER CITY, De Witt, IL
Built 1968 Load: 22.0 t ADT: 1,200
CLINTON RD(FAS 684
FairOver: STREAM
E OF HUNTER, Edgar, IL
Built 1975 Load: 22.0 t ADT: 1,400
CH 8(FAS 679)
FairOver: WILLOW CREEK
.7 MI E OF HORACE, Edgar, IL
Built 1953 Load: 22.0 t ADT: 450
FAS-800
FairOver: LITTLE WABASH RIVER
0.5 MI S BLOOD, Edwards, IL
Built 1940 Load: 22.0 t ADT: 600
FAS-800
FairOver: CROOKED CREEK
1 MI E WEST SALEM, Edwards, IL
Built 1954 Load: 22.0 t ADT: 1,050
TOWNSHIP RD NO 273
FairOver: RUSH CREEK
4.5 MI SE HANOVER, Jo Daviess, IL
Built 1953 Load: 22.0 t ADT: 75
HANKES ROAD
FairOver: LAKE RUN CREEK
2.0 MI E SUGAR GROVE, Kane, IL
Built 1967 Load: 22.0 t ADT: 3,650
WHEELER RD
FairOver: EAST AUX SABLE CK
.5 MI E OF SCHLAPP R, Kendall, IL
Built 1970 Load: 22.0 t ADT: 125
TR-224
FairOver: EGG-BAG-CREEK
E 13TH N 1405, LaSalle, IL
Built 1968 Load: 22.0 t ADT: 10
CH 5 INLET RD
FairOver: BRANCH OF GREEN RIVE
2 MI N SHAW RD, Lee, IL
Built 1961 Load: 22.0 t ADT: 400
CO HWY 28 FAS 2055
FairOver: CREEK BAKER RUN
1.7 MI S OF CORNELL, Livingston, IL
Built 1953 Load: 22.0 t ADT: 200
TR 61
FairOver: INDIAN CREEK
1.5MI S DORSEY, Madison, IL
Built 1969 Load: 22.0 t ADT: 300
US 50
FairOver: Trib to Turkey Creek
1 MI E ODIN, Marion, IL
Built 1951 Load: 22.0 t ADT: 6,700
TR-38
FairOver: CROOKED CREEK
1 MI E CENTRAL CITY, Marion, IL
Built 1909 Load: 22.0 t ADT: 150
FAS 212-CH 9
FairOver: EDWARDS RIVER
SW.COR-8-T14NR4W, Mercer, IL
Built 1955 Load: 22.0 t ADT: 300
TR 278
FairOver: CAMP CREEK
SE-16-T15NR1W, Mercer, IL
Built 1900 Load: 22.0 t ADT: 375
PEEK HOME RD
FairOver: SEVEN MILE BR.
2.0 S.E. POLO, Ogle, IL
Built 1958 Load: 22.0 t ADT: 50
CONGER RD
FairOver: BRANCH MILL CR
3 MI NW BYRON, Ogle, IL
Built 1969 Load: 22.0 t ADT: 250
TR 351
FairOver: STREAM
LA PLACE, Piatt, IL
Built 1969 Load: 22.0 t ADT: 50
TR 259A
FairOver: BOYD DITCH
2.5MI W N CANTON, Pike, IL
Built 1900 Load: 22.0 t ADT: 25
Showing 4,801-4,850 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 |