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
HICKORY HILLS RD
FairOver: BR OF ELKHORN CREEK
2.5 MI N STERLING, Whiteside, IL
Built 1966 Load: 20.7 t ADT: 350
GAYLORD ROAD
FairOver: ROCK RUN CREEK
1 MI W ILL7 AND US30, Will, IL
Built 1971 Load: 20.7 t ADT: 7,050
TR 9
FairOver: PRAIRIE CK
1 MI W EMDEN, Logan, IL
Built 1964 Load: 20.9 t ADT: 75
ILLINOIS 127
FairOver: HARTLINE CREEK
2.3MI S UNION CO., Alexander, IL
Built 1973 Load: 21.1 t ADT: 675
CH 6
FairOver: PURPUS CREEK
5.5 SW TIMEWELL, Brown, IL
Built 1905 Load: 21.1 t ADT: 475
N OLD GALENA TRAIL
FairOver: BR OF E FK OF PLUM R
2 MI N MT.CARROLL, Carroll, IL
Built 1925 Load: 21.1 t ADT: 100
FAS577
FairOver: JOBS CREEK
5.5 MI N VIRGINIA, Cass, IL
Built 1958 Load: 21.1 t ADT: 600
CH12-FAS 732
FairOver: COTTON CREEK
7.5 MI W PANA, Christian, IL
Built 1925 Load: 21.1 t ADT: 500
TR 229
FairOver: BRUSH CREEK
2MI S TAYLORVILLE, Christian, IL
Built 1920 Load: 21.1 t ADT: 100
TR-396
FairOver: E FK WET WEATHER CR
0.5 MI S WENDELIN, Clay, IL
Built 1975 Load: 21.1 t ADT: 100
TR 19
FairOver: CRABAPPLE CREEK
.5 MI S OF WOODYARD, Edgar, IL
Built 1972 Load: 21.1 t ADT: 50
TR 154
FairOver: BROUILLETTS CREEK
1.5 MI NW CHERRY PT, Edgar, IL
Built 1971 Load: 21.1 t ADT: 50
COUNTY HIGHWAY 9
FairOver: EAST CREEK
NE-11-T4NR3E, Fulton, IL
Built 1959 Load: 21.1 t ADT: 525
Hillview/Eldred Ro
FairOver: Dayton Hollow Creek
3.5 S ELDRED, Greene, IL
Built 1946 Load: 21.1 t ADT: 500
FAS-1879
FairOver: MIDDLE FORK CREEK
1.3 MI NE MACEDONIA, Hamilton, IL
Built 1960 Load: 21.1 t ADT: 300
TR 345A
FairOver: TRIB TO SPRING CR
.5 MI E OF US 45, Iroquois, IL
Built 1916 Load: 21.1 t ADT: 50
FAS 749
FairOver: OTTER CREEK
2.2 MI N IL RT 3, Jersey, IL
Built 1963 Load: 21.1 t ADT: 900
FAS 928
FairOver: CACHE RIVER
NW1/4 SEC 6 T14S,R3E, Johnson, IL
Built 1948 Load: 21.1 t ADT: 550
SMITH ROAD
FairOver: BLACKBERRY CREEK
2.0 MI S ELBURN, Kane, IL
Built 1964 Load: 21.1 t ADT: 275
TR 183
FairOver: DEER CREEK
6 MI SW AROMA PARK, Kankakee, IL
Built 1910 Load: 21.1 t ADT: 175
CH 16
FairOver: BLACK WALNUT CR
3.2 MI NE MANTENO, Kankakee, IL
Built 1965 Load: 21.1 t ADT: 1,900
TR 69
FairOver: FARR CREEK
2MI NE EXLINE, Kankakee, IL
Built 1976 Load: 21.1 t ADT: 75
FAS268 B/CH15
FairOver: COVEL CREEK
E 22ND,N 2215, LaSalle, IL
Built 1955 Load: 21.1 t ADT: 950
CENTER ROAD
FairOver: BR OF BUREAU CREEK
3.1 M S OF SUBLETTE, Lee, IL
Built 1961 Load: 21.1 t ADT: 25
ATANTA-BEASON RD
FairOver: KICKAPOO CK
4 MI S ATLANTA, Logan, IL
Built 1948 Load: 21.1 t ADT: 400
TR 176
FairOver: HUNTER SLOUGH
2 E .5 MI S CORNLAND, Logan, IL
Built 1955 Load: 21.1 t ADT: 100
TR 187
FairOver: SALT CK TRIB
3 W 2.5 MI N MT PLSK, Logan, IL
Built 1958 Load: 21.1 t ADT: 50
TR 60
FairOver: SUGAR CR FLOOD PLAIN
4 MI E NEW HOLLAND, Logan, IL
Built 1989 Load: 21.1 t ADT: 20
TR 268
FairOver: ROGERS DITCH
3 MI SE MASON CITY, Mason, IL
Built 1900 Load: 21.1 t ADT: 50
TR 290
FairOver: MACKINAW RIVER
4.8 MI SW GRIDLEY, McLean, IL
Built 1973 Load: 21.1 t ADT: 200
FAS 206-CH 4
FairOver: CAMP CREEK
SW-12-T15NR1W, Mercer, IL
Built 1958 Load: 21.1 t ADT: 1,100
TR 69
FairOver: W FORK SHOAL CR
2 MI W HARVEL, Montgomery, IL
Built 1900 Load: 21.1 t ADT: 25
HALDANE RD.
FairOver: BR. PINE CREEK
1.5 E. HALDANE, Ogle, IL
Built 1956 Load: 21.1 t ADT: 100
PARKS SCHOOL ROAD
FairOver: HICKORY CREEK
NE1/4 7 RADNOR ROAD, Peoria, IL
Built 1959 Load: 21.1 t ADT: 325
TR 178
FairOver: DRAINAGE DITCH
1.0 MI S IVESDALE, Piatt, IL
Built 1966 Load: 21.1 t ADT: 25
TR-230
FairOver: CREEK
3 MI NW BERRYVILLE, Richland, IL
Built 1909 Load: 21.1 t ADT: 10
CH 50
FairOver: RAYHILL SLOUGH
1.50MI S ILL 177, St. Clair, IL
Built 1954 Load: 21.1 t ADT: 475
W HOWARDSVILLE ROA
FairOver: BR OF YELLOW CREEK
1.3 MI W OF LENA, Stephenson, IL
Built 1915 Load: 21.1 t ADT: 25
N. WAYNE ROAD
FairOver: BR OF SPAFFORD CREEK
5.0 MI W WINSLOW, Stephenson, IL
Built 1969 Load: 21.1 t ADT: 50
NORTH BOLENDER RD
FairOver: BR OF E RICHLAND CR
1.5 MI N ORANGEVILLE, Stephenson, IL
Built 1968 Load: 21.1 t ADT: 100
LYNDON ROAD
FairOver: FRENCH CREEK
1 MI N OF US 30, Whiteside, IL
Built 1933 Load: 21.1 t ADT: 1,000
TR 257
FairOver: BRANCH FRAZIER CREEK
2.9 MI N QUINCY, Adams, IL
Built 1974 Load: 21.4 t ADT: 275
N LORAN ROUTE
FairOver: BR. E. FK. PLUM RIV
5.7 MI NE MT.CARROLL, Carroll, IL
Built 1955 Load: 21.4 t ADT: 200
TR 244
FairOver: BRUSHY BRANCH
5MI W ASSUMPTION, Christian, IL
Built 1922 Load: 21.4 t ADT: 50
TR 102/BEAVER ROAD
FairOver: STREAM
8.5 MI. N. BECKMEYER, Clinton, IL
Built 1971 Load: 21.4 t ADT: 50
TR-204
FairOver: S FK RACCOON CREEK
5 MI NW HUTSONVILLE, Crawford, IL
Built 1950 Load: 21.4 t ADT: 50
E PAW PAW RD
FairOver: BR PAW PAW RUN
205N 030E, DeKalb, IL
Built 1955 Load: 21.4 t ADT: 100
TR 261
FairOver: EAST DONICA CREEK
0.5 MI N OF KANSAS, Edgar, IL
Built 1970 Load: 21.4 t ADT: 50
SEVEN HILLS RD-TR4
FairOver: SHAW CREEK
SE-29-T7NR1E, Fulton, IL
Built 1976 Load: 21.4 t ADT: 50
MSS 1030
FairOver: RUBICON CREEK
GREENFIELD, Greene, IL
Built 1974 Load: 21.4 t ADT: 675
Showing 4,701-4,750 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 |