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
TR 385
FairOver: LITTLE WABASH
4.5 MI NW SIGEL, Shelby, IL
Built 1924 Load: 26.2 t ADT: 100
ILL 177 / IL 158
FairOver: CREEK
1.5 mi E of IL 159, St. Clair, IL
Built 1959 Load: 26.2 t ADT: 7,300
W STATE LINE ROAD
FairOver: INDIAN CREEK
1.35 MI. W. ILL 73, Stephenson, IL
Built 1956 Load: 26.2 t ADT: 200
TR 155 A
FairOver: STONY CREEK
3.5 MI SE BISMARCK, Vermilion, IL
Built 1975 Load: 26.2 t ADT: 125
FAS-800
FairOver: LITTLE BONPAS CREEK
3 MI W MESA LAKE, Wabash, IL
Built 1949 Load: 26.2 t ADT: 950
TR 187
FairOver: BR ELKHORN CR
1.5 MI N-2MI E LIVEL, Washington, IL
Built 1901 Load: 26.2 t ADT: 10
TR-166
FairOver: LICK CREEK
2.25 MI S BROWNSVILL, White, IL
Built 1961 Load: 26.2 t ADT: 75
HICKORY HILLS RD
FairOver: BR OF ELKHORN CREEK
4 MI N. STERLING, Whiteside, IL
Built 1958 Load: 26.2 t ADT: 350
REGAN RD
FairOver: MARLEY CR
0.6 MI E PARKER RD, Will, IL
Built 1966 Load: 26.2 t ADT: 1,450
WEBER RD.
FairOver: LILLY CACHE CREEK
1.6M.N.OF I-55, Will, IL
Built 1988 Load: 26.2 t ADT: 31,400
WESLEYAN AND 22ND
FairOver: S.E. DRAINAGEWAY
WESLEYAN AND 22ND ST, Winnebago, IL
Built 1967 Load: 26.2 t ADT: 3,500
TR 132
FairOver: W BR PANTHER CR
1 MI W ROANOKE, Woodford, IL
Built 1928 Load: 26.2 t ADT: 200
TR 30
FairOver: INDIAN CREEK
2 MI NW ARENZVILLE, Cass, IL
Built 1984 Load: 26.6 t ADT: 25
CH 18(FAS 528)
FairOver: BLACK SLOUGH
1 MI W OF PHILO, Champaign, IL
Built 1983 Load: 26.6 t ADT: 2,650
CH 22(FAS 515)
FairOver: STREAM
4.3 MI N OF PENFIELD, Champaign, IL
Built 1934 Load: 26.6 t ADT: 175
FOURTH ST
FairOver: OWL CREEK
VILLAGE OF FISHER, Champaign, IL
Built 1970 Load: 26.6 t ADT: 100
FAS-798 (CH-8)
FairOver: LITTLE MUDDY CREEK
1.6 MI E BIBLE GROVE, Clay, IL
Built 1964 Load: 26.6 t ADT: 375
US 12,20,45 SB
FairOver: RR - CN & CANALS
0.9 M S I-55, Cook, IL
Built 1980 Load: 26.6 t ADT: 64,200
DEVON AVE
FairOver: N SHORE CHANNEL
6400 N & 3300 W, Cook, IL
Built 1930 Load: 26.6 t ADT: 26,700
HAYES DR
FairOver: JACKSON PK LAGOON
6300 S & 1900 E, Cook, IL
Built 1902 Load: 26.6 t ADT: 14,200
PERRY RD
FairOver: AFTON LATERAL
1500N 660E, DeKalb, IL
Built 1950 Load: 26.6 t ADT: 1,800
EAGLE ST.
FairOver: WEST BR.DUPAGE RIVER
0.1MI N Aurora Ave, DuPage, IL
Built 1960 Load: 26.6 t ADT: 850
IL 1 US 150(FAP 33
FairOver: BROUILLETTS CREEK
1.0 MI S OF US 36, Edgar, IL
Built 1952 Load: 26.6 t ADT: 3,250
TR-70
FairOver: VILLAGE CREEK
3.5 MI N ALBION, Edwards, IL
Built 1909 Load: 26.6 t ADT: 75
FAS-787
FairOver: NORTH FORK
E CARLYLE LAKE, Fayette, IL
Built 1966 Load: 26.6 t ADT: 200
4TH STREET 8400
FairOver: CONSOLIDATED RR
VANDALIA, Fayette, IL
Built 1909 Load: 26.6 t ADT: 575
ILL 95
FairOver: SPOON RIVER
2 MI W SMITHFIELD, Fulton, IL
Built 1932 Load: 26.6 t ADT: 1,400
TR 190A
FairOver: SLATER CREEK
2.0 MI NW BOWEN, Hancock, IL
Built 1965 Load: 26.6 t ADT: 25
TR 72
FairOver: N FK LARRY'S CREEK
3.0 SW POWELLTON, Hancock, IL
Built 1923 Load: 26.6 t ADT: 25
TR 101
FairOver: PETERS CREEK
NW Q SE 19 T12S R9E, Hardin, IL
Built 1957 Load: 26.6 t ADT: 125
FAI-57 SB
FairOver: BRANCH OF SPRING CR
3.1 MI S ONARGA INT, Iroquois, IL
Built 1968 Load: 26.6 t ADT: 8,750
FAI-57 NB
FairOver: BRANCH OF SPRING CR
3.1 MI S ONARGA INT, Iroquois, IL
Built 1968 Load: 26.6 t ADT: 8,750
TR 525
FairOver: DRAINAGE DITCH
N 14TH E 215, LaSalle, IL
Built 1964 Load: 26.6 t ADT: 75
TR-437
FairOver: COVEL CREEK
N 2250 E 1540, LaSalle, IL
Built 1972 Load: 26.6 t ADT: 100
TR 39
FairOver: E FORK MAZON R
2940 E, 2900 N, Livingston, IL
Built 1963 Load: 26.6 t ADT: 50
FAP 320(IL 121)
FairOver: WATERWAY
.5 M S PERSHING, Macon, IL
Built 1982 Load: 26.6 t ADT: 15,100
ILL 4
FairOver: EAST FORK CREEK
0.47 S BN RR, Macoupin, IL
Built 1957 Load: 26.6 t ADT: 4,800
TR 94
FairOver: BEAR CR
.5 N. CHESTEFIELD, Macoupin, IL
Built 1977 Load: 26.6 t ADT: 35
FAI 70 WB
FairOver: BRANCH OF SILVER CRK
1.25 M W ILL 4, Madison, IL
Built 1962 Load: 26.6 t ADT: 15,300
IL 140 & IL 111 EB
FairOver: E Fork of Wood River
1.1mi W of IL 255, Madison, IL
Built 1973 Load: 26.6 t ADT: 15,200
OLBRICH ROAD
FairOver: DRAIN DITCH RUSH CR
.9 MI S DUNHAM RD, McHenry, IL
Built 1921 Load: 26.6 t ADT: 275
FAU 6382
FairOver: LITTLE KICKAPOO CR
920 N, 1580 E, McLean, IL
Built 1962 Load: 26.6 t ADT: 700
TR 229
FairOver: KINGS MILL CREEK
2.3 MI NW 150 & 9, McLean, IL
Built 1968 Load: 26.6 t ADT: 275
TR 43
FairOver: BUCK CREEK
4.0 MI SSE GRIDLEY, McLean, IL
Built 1963 Load: 26.6 t ADT: 250
ROCKY HOLLOW RD
FairOver: KYTE CREEK
3.0 S.W.CHANA, Ogle, IL
Built 1966 Load: 26.6 t ADT: 100
TR 225
FairOver: KISER CRK TRIB.
2.0MI NW EL DARA, Pike, IL
Built 1992 Load: 26.6 t ADT: 50
ILL 154
FairOver: E TRIB TO PLUM CREEK
2.3 MI W OF SPARTA, Randolph, IL
Built 1934 Load: 26.6 t ADT: 2,900
CH-14
FairOver: FOX RIVER
2.5 MI SW DUNDAS, Richland, IL
Built 1973 Load: 26.6 t ADT: 300
RODMAN AVENUE
FairOver: MOLINE POOL
SE ARSENAL ISLAND, Rock Island, IL
Built 1981 Load: 26.6 t ADT: 9,550
TR 189 0.5 N
FairOver: GRIFFITH CREEK
1 MI E MECHANICSBURG, Sangamon, IL
Built 1957 Load: 26.6 t ADT: 50
Showing 6,101-6,150 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.