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 290
FairOver: MARTINTON DITCH#2
1 MI NE MARTINTON, Iroquois, IL
Built 1971 Load: 28.2 t ADT: 150
CH 47
FairOver: TERRY CR
3.3 MI N BONDFIELD, Kankakee, IL
Built 1964 Load: 28.2 t ADT: 175
TR 276
FairOver: WOLF CREEK
E 16TH N 1525, LaSalle, IL
Built 1965 Load: 28.2 t ADT: 325
CH 1 LOST NATION R
FairOver: ROCK RIVER TRIBUTARY
0.7 MI E ILL RT 2, Lee, IL
Built 1963 Load: 28.2 t ADT: 1,900
TR 244
FairOver: DRAINAGE DITCH
2610 N, 2900 E, Livingston, IL
Built 1950 Load: 28.2 t ADT: 50
TR 84
FairOver: PRAIRIE CK
1 E 1 MI N EMDEN, Logan, IL
Built 1966 Load: 28.2 t ADT: 20
STEIG ROAD
FairOver: APPLE CREEK
0.7 MI N PERKINS RD, McHenry, IL
Built 1919 Load: 28.2 t ADT: 425
MAXON RD
FairOver: PISCASAW CRK
.25 MI W OF HARVARD, McHenry, IL
Built 1992 Load: 28.2 t ADT: 575
MARENGO RD
FairOver: Trib W Br Union Cr E
1.5MI E OF US-20, McHenry, IL
Built 1995 Load: 28.2 t ADT: 3,300
I-55 SB
FairOver: TURKEY CREEK
2.6MI N. LEXINGTON, McLean, IL
Built 1975 Load: 28.2 t ADT: 11,700
I-55 NB
FairOver: TURKEY CREEK
2.6 MI N. LEXINGTON, McLean, IL
Built 1977 Load: 28.2 t ADT: 11,700
TR 203 A
FairOver: MACKINAW RIVER
3.5 MI SE ANCHOR, McLean, IL
Built 1925 Load: 28.2 t ADT: 50
TR 258
FairOver: N. HENDERSON CREEK
W.CTR-16-T13NR1W, Mercer, IL
Built 1969 Load: 28.2 t ADT: 25
TR 109
FairOver: ELIZA LAKE DITCH
SW-2-T14NR6W, Mercer, IL
Built 1986 Load: 28.2 t ADT: 50
TR 0257
FairOver: E FK SHOAL CK
3.0 MI SE IRVING, Montgomery, IL
Built 1953 Load: 28.2 t ADT: 75
CH 14
FairOver: S PLUM CREEK
2 MI S EXETER, Scott, IL
Built 1969 Load: 28.2 t ADT: 100
TR 140
FairOver: BIGSANDYCREEK
3MIEOFWINCHESTER, Scott, IL
Built 1972 Load: 28.2 t ADT: 175
ILL 159
FairOver: BR RICHLAND CREEK
at IL 13/158/177 INT, St. Clair, IL
Built 1955 Load: 28.2 t ADT: 14,200
UNION HILLRD/FAU91
FairOver: TRIB SCHOENBERGER CR
2.25 MI N ILL 161, St. Clair, IL
Built 1981 Load: 28.2 t ADT: 8,650
SUNNYSIDE SCH TR 2
FairOver: EAST BRANCH
3 MI N US 50, St. Clair, IL
Built 1941 Load: 28.2 t ADT: 50
CEDARVILLE RD
FairOver: BRANCH WADDAMS CREEK
1.0 MI E LENA, Stephenson, IL
Built 1936 Load: 28.2 t ADT: 1,300
TR 215
FairOver: STREAM
NW COR-24-T23NR4W, Tazewell, IL
Built 1947 Load: 28.2 t ADT: 100
CH 27
FairOver: BEAVER POND CREEK
2 MI SOUTH COVINGTON, Washington, IL
Built 1963 Load: 28.2 t ADT: 250
FROG POND ROAD
FairOver: CATTAIL SLOUGH
2 MI E OF FULTON, Whiteside, IL
Built 1966 Load: 28.2 t ADT: 725
US 45
FairOver: FORKED CREEK
2.1 S MANH-MONEE RD, Will, IL
Built 1976 Load: 28.2 t ADT: 4,200
IL 53
FairOver: LILY CACHE CREEK
1 M NORTH OF I-55, Will, IL
Built 1934 Load: 28.2 t ADT: 29,200
TR 4
FairOver: STREAM
N E CORNER W'SON CO, Williamson, IL
Built 1900 Load: 28.2 t ADT: 75
TR 1
FairOver: STREAM
2.5 MI NW CHENEYVLE, Iroquois, IL
Built 1965 Load: 28.4 t ADT: 50
RURAL SO 12TH
FairOver: CURTIS CREEK
ON 12 5080F CHERRYLN, Adams, IL
Built 1966 Load: 28.5 t ADT: 2,600
CH-4 (FAS-945)
FairOver: SANDY CREEK
3.5 MI N DISWOOD, Alexander, IL
Built 1962 Load: 28.5 t ADT: 650
TR 125
FairOver: DRAINAGE DITCH
1.5 MI W. OF UNITY, Alexander, IL
Built 1977 Load: 28.5 t ADT: 125
TR 181
FairOver: SANGCHRIS LAKE
2.5 MI SSW KINCAID, Christian, IL
Built 1965 Load: 28.5 t ADT: 100
IL 130 (FAP 820)
FairOver: TOWN BRANCH
700 FT S IL 316, Coles, IL
Built 1979 Load: 28.5 t ADT: 7,150
VILLA ST
FairOver: WILLOW CREEK
.05 E KANECO LINE, Cook, IL
Built 1922 Load: 28.5 t ADT: 7,700
US 30 (LINCOLN HWY
FairOver: THORN CREEK
0.2 M W OF IL 1, Cook, IL
Built 1986 Load: 28.5 t ADT: 22,200
35TH ST
FairOver: S FK S BR CHI RIVER
1300 W 35TH P5C, Cook, IL
Built 1969 Load: 28.5 t ADT: 13,100
ROBERTA AV
FairOver: ADDISON CR
0.13 MI N NORTH AV, Cook, IL
Built 1954 Load: 28.5 t ADT: 1,450
TR 41
FairOver: ROCK CREEK
2.3 MI NE WAYNESVILL, De Witt, IL
Built 1973 Load: 28.5 t ADT: 25
TR 185
FairOver: STREAM
3.2 MI WNW KENNY, De Witt, IL
Built 1972 Load: 28.5 t ADT: 25
TR 9
FairOver: STREAM
2.5 MI NW WAYNESVILL, De Witt, IL
Built 1975 Load: 28.5 t ADT: 50
TR 138
FairOver: STREAM
3 MI NNE OF WAPELLA, De Witt, IL
Built 1975 Load: 28.5 t ADT: 50
FAS 1678(CH 3)
FairOver: SALT FORK
1.5 MI N SCOTTLAND, Edgar, IL
Built 1969 Load: 28.5 t ADT: 175
TR-335
FairOver: BEAR CREEK
1 MI NE VANDALIA, Fayette, IL
Built 1981 Load: 28.5 t ADT: 10
ILL 84
FairOver: ROCK RIVER
AT ROCK ISLAND CO LN, Henry, IL
Built 1981 Load: 28.5 t ADT: 12,400
I-80
FairOver: DRAINAGE DITCH
1.55 MI E JCT ILL 78, Henry, IL
Built 1962 Load: 28.5 t ADT: 17,900
SEAVEY ROAD
FairOver: BLACKBERRY CREEK
0.4 MI W ILL 47, Kane, IL
Built 1961 Load: 28.5 t ADT: 100
CH 44
FairOver: SOLDIER CR
2.6 MI E BOURBONNAIS, Kankakee, IL
Built 1961 Load: 28.5 t ADT: 4,650
CH-37
FairOver: W.BR. HORSE CR.
3 MI EAST OF CABERY, Kankakee, IL
Built 1962 Load: 28.5 t ADT: 425
TR 77A
FairOver: DAVIS CREEK
1 MI W OF BOURBONAIS, Kankakee, IL
Built 1967 Load: 28.5 t ADT: 1,050
US 12
FairOver: NIPPERSINK LAKE CHAN
1 M NW OF IL 132, Lake, IL
Built 1990 Load: 28.5 t ADT: 21,400
Showing 6,401-6,450 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.