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
MANCHESTER ROAD
FairOver: DRY RUN CREEK
1 MI E WILLOWBROOK, Winnebago, IL
Built 1960 Load: 17.5 t ADT: 675
TR 101A 100 FT N 1
FairOver: WEST BR PANTHER CR
5.3 MI E ILL 117, Woodford, IL
Built 1936 Load: 17.5 t ADT: 125
CH 10-FAS 732
FairOver: UNSER BRANCH
2.75 M W MORRISONVIL, Christian, IL
Built 1952 Load: 17.8 t ADT: 750
TR 273
FairOver: LAKE FORK
3.5MI N PANA, Christian, IL
Built 1950 Load: 17.8 t ADT: 20
CH 4 (FAS 537)
FairOver: SALT CREEK
.4 MI S FARMER CITY, De Witt, IL
Built 1958 Load: 17.8 t ADT: 1,200
IRENE RD
FairOver: TRIMBLE RUN
3575N 240E, DeKalb, IL
Built 1948 Load: 17.8 t ADT: 525
CH 15(FAS 685)
FairOver: STREAM
1 MI S OF IL 16, Edgar, IL
Built 1957 Load: 17.8 t ADT: 225
TR 196
FairOver: TRIB. TO IROQ. RIVER
1MI S. SUGAR ISLANDE, Iroquois, IL
Built 1915 Load: 17.8 t ADT: 250
ILL 3
FairOver: TALBOTT HOLLOW
1.1M NW OF ILL 151, Jackson, IL
Built 1933 Load: 17.8 t ADT: 2,150
ILL 146
FairOver: TRIB OF BUCK RUN
1.9M E.UNION CO., Johnson, IL
Built 1930 Load: 17.8 t ADT: 2,250
PEPLOW ROAD
FairOver: VIRGIL DR DITCH NO.3
0.5 MI W VIRGIL, Kane, IL
Built 1929 Load: 17.8 t ADT: 600
TR 194
FairOver: W FORK MAZON R
2820 N, 2200 E, Livingston, IL
Built 1958 Load: 17.8 t ADT: 25
TR 81A
FairOver: LOCAL DRAINAGE
1 MI S LAWNDALE, Logan, IL
Built 1955 Load: 17.8 t ADT: 20
TR 92
FairOver: LOCAL DRAINAGE
2 MI S BROADWELL, Logan, IL
Built 1957 Load: 17.8 t ADT: 100
TR 23
FairOver: TRIB TO BEAR CREEK
0.2 MI E TR 82, Massac, IL
Built 1993 Load: 17.8 t ADT: 25
TR 8
FairOver: MARROWBONE CREEK
2.2 MI NW BETHANY, Moultrie, IL
Built 1957 Load: 17.8 t ADT: 100
TR 435 16 S
FairOver: HENKLE BRANCH CREEK
1.0 SW OF PAWNEE, Sangamon, IL
Built 1955 Load: 17.8 t ADT: 325
TR 271 A
FairOver: DRAKE CREEK BRANCH
5 MI E STRASBURG, Shelby, IL
Built 1984 Load: 17.8 t ADT: 75
FAS-2820
FairOver: BEAR CREEK
4 MI NW RINARD, Wayne, IL
Built 1958 Load: 17.8 t ADT: 900
TR 87
FairOver: TRIB OF PART. CREEK
0.13 MI W OF ILL 89, Woodford, IL
Built 1963 Load: 17.8 t ADT: 50
TR-15
FairOver: CLEAR CREEK DITCH
SW 1/4 SEC1 T14S R3W, Alexander, IL
Built 1944 Load: 18.1 t ADT: 25
TR 370
FairOver: NEGRO CREEK
0.5 MI. E. SEATONVIL, Bureau, IL
Built 1955 Load: 18.1 t ADT: 175
TR 46
FairOver: LAKE PANA
2 MI E OF PANA, Christian, IL
Built 1964 Load: 18.1 t ADT: 300
TR 14
FairOver: CRABAPPLE CREEK
1 MI E COLES STATION, Coles, IL
Built 1960 Load: 18.1 t ADT: 25
LAKE COOK RD
FairOver: SPRING CREEK
4 M W IL 59, Cook, IL
Built 1927 Load: 18.1 t ADT: 9,500
PLEASANT HILL ROAD
FairOver: BR S BR KISHWAUKEE R
2750N 1045E, DeKalb, IL
Built 1954 Load: 18.1 t ADT: 850
TR 96
FairOver: STREAM
1 M E .4 M N REDMON, Edgar, IL
Built 1955 Load: 18.1 t ADT: 50
WINTERS ROAD
FairOver: VIRGIL DR DITCH NO.3
1 M W MEREDITH RD, Kane, IL
Built 1947 Load: 18.1 t ADT: 375
MS-1117 ST JOHNS A
FairOver: RAVINE
3.3 M N LAKE COOK RD, Lake, IL
Built 1972 Load: 18.1 t ADT: 1,400
TR-32 (HARMON RD)
FairOver: RED OAK DITCH
0.2 M N BUREAU CO LN, Lee, IL
Built 1968 Load: 18.1 t ADT: 150
TR 139
FairOver: CRENSHAW CREEK
2.5 MI NW UNIONVILLE, Massac, IL
Built 1988 Load: 18.1 t ADT: 100
CH 1(FAS 658)
FairOver: WEST OKAW RIVER
3.9 MI N LOVINGTON, Moultrie, IL
Built 1973 Load: 18.1 t ADT: 175
W DORRIS HEIGHTS
FairOver: DRAINAGE DITCH
0.1 MI. W. ILL. 34, Saline, IL
Built 1941 Load: 18.1 t ADT: 1,350
TR 9 (9.5N)
FairOver: WOLF CREEK
1.0 S WILLIAMSVILLE, Sangamon, IL
Built 1953 Load: 18.1 t ADT: 125
N AFOLKEY ROAD
FairOver: CEDAR CREEK
2.5 MI NW OF DAKOTA, Stephenson, IL
Built 1974 Load: 18.1 t ADT: 525
NORTH MILL RD
FairOver: BR OF PECATONICA RIV
2.0 MI E OF WINSLOW, Stephenson, IL
Built 1968 Load: 18.1 t ADT: 50
TULLAMORE RD-TR 21
FairOver: INDIAN CREEK
CTR-19-T23NR3W, Tazewell, IL
Built 1952 Load: 18.1 t ADT: 150
MIDDLE ROAD
FairOver: DRY RUN CREEK
0.7 M E MANCHESTR RD, Winnebago, IL
Built 1965 Load: 18.1 t ADT: 250
FAS 2943
FairOver: BROWNSVILLE CK TRIB
2.5 MI E OF THEBES, Alexander, IL
Built 1968 Load: 18.5 t ADT: 100
SQUAW PRAIRIE RD
FairOver: BEAVER CREEK
2.5 MI NW BELVIDERE, Boone, IL
Built 1959 Load: 18.5 t ADT: 1,650
CITY PARK ROAD
FairOver: CARROLL CREEK
0.10 MI W PARK ENTRN, Carroll, IL
Built 1994 Load: 18.5 t ADT: 125
TR 95
FairOver: SKAGGS CREEK
3.5MI NW TOVEY, Christian, IL
Built 1900 Load: 18.5 t ADT: 35
CH-12 (FAS 732)
FairOver: COTTON CREEK
10 W OF PANA, Christian, IL
Built 1940 Load: 18.5 t ADT: 500
80TH AV
FairOver: MIDLOTHIAN CREEK
0.1 MI. N 171ST ST, Cook, IL
Built 1953 Load: 18.5 t ADT: 15,900
TR-356
FairOver: SWAN POND LATERAL
2 MI NE DALE, Hamilton, IL
Built 1909 Load: 18.5 t ADT: 25
IL 100
FairOver: DRAINAGE
0.2 MI S OF 042-2001, Jersey, IL
Built 1935 Load: 18.5 t ADT: 775
TR 284A
FairOver: FRENCH CREEK
W.CTR-33-T10NR4E, Knox, IL
Built 1969 Load: 18.5 t ADT: 50
TR 45
FairOver: Prairie Creek Tributary
3.0 mi W of I-155, Logan, IL
Built 1957 Load: 18.5 t ADT: 100
NORTH UNION ROAD
FairOver: KISHWAUKEE RIVER
.3 MI NE HEMMINGSEN, McHenry, IL
Built 1973 Load: 18.5 t ADT: 200
FAS 901(CH 9)
FairOver: STREAM
0.5 MI S OF ILL 13, Saline, IL
Built 1955 Load: 18.5 t ADT: 1,900
Showing 4,401-4,450 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 |