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
FAI 74 SB
FairOver: EDWARDS RIVER
2 MI S JCT ILL 81, Henry, IL
Built 1968 Load: 40.5 t ADT: 7,150
ILL RT 92
FairOver: MAIN UNION SP DITCH
0.9 MI W JCT ILL 78, Henry, IL
Built 2012 Load: 40.5 t ADT: 1,000
US 24
FairOver: SPRING CREEK
4.1 MILES E OF US 45, Iroquois, IL
Built 1954 Load: 40.5 t ADT: 3,200
US 52
FairOver: IROQUOIS RIVER
1.73 MI E OF ILL 49, Iroquois, IL
Built 1929 Load: 40.5 t ADT: 1,750
US 24
FairOver: PRAIRIE CREEK
4.52 MI W OF I-57, Iroquois, IL
Built 1987 Load: 40.5 t ADT: 2,300
TR 267
FairOver: LEWIS CREEK
SE 1/4 SECT. 17-9-2, Jackson, IL
Built 1987 Load: 40.5 t ADT: 600
FAP-116 (ILL-33/13
FairOver: STREAM
1 MI N NEWTON, Jasper, IL
Built 1984 Load: 40.5 t ADT: 5,700
FAP-781 (ILL-33)
FairOver: STREAM
1.75 MI E ILL-49, Jasper, IL
Built 1995 Load: 40.5 t ADT: 2,750
FAS 2708 CH 13
FairOver: EMBARRAS RIVER
3MI W. OF HIDALGO, Jasper, IL
Built 1977 Load: 40.5 t ADT: 250
IL 50 FAP 840
FairOver: SOLDIER CREEK
N LMTS KKK, Kankakee, IL
Built 2003 Load: 40.5 t ADT: 16,200
FAI 74 WB
FairOver: Pope Creek
1 mi s Henry Co line, Knox, IL
Built 2018 Load: 40.5 t ADT: 8,150
US 14 EB
FairOver: FLINT CREEK
2.0 M W OF IL 59, Lake, IL
Built 1953 Load: 40.5 t ADT: 22,300
US 14 WB
FairOver: FLINT CREEK
2.0 M W OF IL 59, Lake, IL
Built 1953 Load: 40.5 t ADT: 22,300
IL 60
FairOver: DES PLAINES RIVER
0.25 M E OF IL 21, Lake, IL
Built 1987 Load: 40.5 t ADT: 38,100
US 45 & IL 21
FairOver: INDIAN CREEK
0.01 M N OF IL 22, Lake, IL
Built 1990 Load: 40.5 t ADT: 25,100
WILSON ROAD
FairOver: SQUAW CREEK
0.7 M N OF IL-134, Lake, IL
Built 1997 Load: 40.5 t ADT: 9,850
FAU6046 CHAMPLAIN
FairOver: GOOSE CREEK
0.20 MI N OF US 6, LaSalle, IL
Built 1933 Load: 40.5 t ADT: 3,150
SHERIDAN ROAD
FairOver: MISSION CREEK
0.6 MI N OF US 52, LaSalle, IL
Built 1930 Load: 40.5 t ADT: 1,600
TR-98
FairOver: EAGLE BRANCH
3 MI N PETROLIA, Lawrence, IL
Built 1994 Load: 40.5 t ADT: 50
FAP 561-IL 2 EB
FairOver: LITTLE CREEK
W SAUK VAL. COLLEGE, Lee, IL
Built 1991 Load: 40.5 t ADT: 11,000
ILL 23
FairOver: PRAIRIE CR
1.05 MI S OF ILL 17, Livingston, IL
Built 1982 Load: 40.5 t ADT: 2,100
CH 8 FAS 1362
FairOver: HICKORY CREEK
3.5 MI E OF OCOYA, Livingston, IL
Built 1959 Load: 40.5 t ADT: 950
TR 210
FairOver: CREEK
2630 N, 2300 E, Livingston, IL
Built 1962 Load: 40.5 t ADT: 25
US 36(FAP 323)
FairOver: TRIB TO LONG CREEK
AT LONG CREEK, Macon, IL
Built 1928 Load: 40.5 t ADT: 6,400
US 36(FAP 323)
FairOver: LONG CREEK
E LONG CREEK, Macon, IL
Built 1928 Load: 40.5 t ADT: 4,450
FAP 322 (US 51) N.
FairOver: WILLOW BRANCH CREEK
2 MI S OF MACON, Macon, IL
Built 2001 Load: 40.5 t ADT: 5,700
FAP 322 (US 51) S.
FairOver: WILLOW BRANCH CREEK
2 MI S OF MACON, Macon, IL
Built 2001 Load: 40.5 t ADT: 5,700
TR 74(HIBBARD RD)
FairOver: WILLOW BRANCH
2.3 MI SW MACON, Macon, IL
Built 1909 Load: 40.5 t ADT: 100
ILL 111
FairOver: HORSESHOE LK CHANNEL
1.1mi N of 55/70, Madison, IL
Built 1941 Load: 40.5 t ADT: 4,050
OLD ALTON-EDW RD C
FairOver: CAHOKIA CREEK
.25 S ILL 143 & 159, Madison, IL
Built 1990 Load: 40.5 t ADT: 1,200
CARPENTER RD/ TR 1
FairOver: TRIB TO CAHOKIA CK
2.0 MI SW CARPENTER, Madison, IL
Built 1981 Load: 40.5 t ADT: 350
ILL 26
FairOver: CROW CREEK
6.64 MI S OF ILL 17, Marshall, IL
Built 1993 Load: 40.5 t ADT: 2,350
US 45
FairOver: FOUR MILE CREEK
0.5 MI E OF ILL 145, Massac, IL
Built 1995 Load: 40.5 t ADT: 4,900
ILL 41
FairOver: KJRY, BNSFRR'S
2.5 MI S OF BUSHNELL, McDonough, IL
Built 1938 Load: 40.5 t ADT: 3,000
US 150
FairOver: SALT CREEK (N FORK)
0.8 MI S OF LEROY, McLean, IL
Built 2004 Load: 40.5 t ADT: 900
ILL 123
FairOver: CLARY CREEK
1 MI E TALLULA, Menard, IL
Built 1994 Load: 40.5 t ADT: 1,250
ILL 94
FairOver: N. HENDERSON CR
2.4 MI N OF ILL 135, Mercer, IL
Built 1924 Load: 40.5 t ADT: 1,250
FAS 212-CH 9
FairOver: ELIZA CREEK
NW-17-T15NR4W, Mercer, IL
Built 1973 Load: 40.5 t ADT: 150
TR 415
FairOver: PIATT CR
4 MI S FILLMORE, Montgomery, IL
Built 1961 Load: 40.5 t ADT: 25
FAS 642(CH 4)
FairOver: WHITLEY CREEK
1.5 MI E OF ILL 32, Moultrie, IL
Built 1967 Load: 40.5 t ADT: 2,000
ILL 128(FAP 770)
FairOver: CREEK
3.0 MI S DALTON CITY, Moultrie, IL
Built 1981 Load: 40.5 t ADT: 1,950
IL 2
FairOver: STREAM
4 MI N GRAND DETOUR, Ogle, IL
Built 1990 Load: 40.5 t ADT: 3,350
IL 64
FairOver: ELKHORN CREEK TRIB.
.4 MI E JCT US 52, Ogle, IL
Built 1993 Load: 40.5 t ADT: 625
ILL 64
FairOver: DRAINAGE DITCH
.41 MI E CHANA RD, Ogle, IL
Built 1933 Load: 40.5 t ADT: 3,600
US 150
FairOver: KICKAPOO CREEK
2.5 miles W of Kickapoo, Peoria, IL
Built 1927 Load: 40.5 t ADT: 3,450
FAI 72 WB
FairOver: BEEBE CREEK
3.4 MI W BARRY INT, Pike, IL
Built 1988 Load: 40.5 t ADT: 4,700
IL 96
FairOver: DUTCH CREEK
1.8M NW ROCKPORT, Pike, IL
Built 1991 Load: 40.5 t ADT: 1,100
CH 4
FairOver: Bull Run Creek
.75 mi N El Dara, Pike, IL
Built 2014 Load: 40.5 t ADT: 250
I-88 EB
FairOver: ZUMA CREEK
2.1 MI SW JCT ILL 92, Rock Island, IL
Built 1976 Load: 40.5 t ADT: 9,450
I-88 WB
FairOver: ZUMA CREEK
2.1 MI SW JCT ILL 92, Rock Island, IL
Built 1976 Load: 40.5 t ADT: 9,450
Showing 12,151-12,200 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.