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
RICE RD CH 15
FairOver: TRIB TO MAZON RIVER
0.2 MI E HALPIN ROAD, Grundy, IL
Built 1952 Load: 25.3 t ADT: 1,200
OLD STAGE RD CH 28
FairOver: I&M CANAL
.13 MI W NET SCH RD, Grundy, IL
Built 1995 Load: 25.3 t ADT: 900
LA SALLE RD TR-2
FairOver: HOG RUN
.1 MI S WAUPECAN RD, Grundy, IL
Built 1975 Load: 25.3 t ADT: 50
TR 84
FairOver: CHANEY CREEK
1.5 MI NW ELVASTON, Hancock, IL
Built 1959 Load: 25.3 t ADT: 150
FAS 325
FairOver: DRAIN DT
2.91 MI S OF ILL 1, Iroquois, IL
Built 1958 Load: 25.3 t ADT: 1,150
TR 336A
FairOver: STREAM
3 MI SE MILFORD, Iroquois, IL
Built 1970 Load: 25.3 t ADT: 50
WALL ST
FairOver: PILES FORK
WALL ST CARBONDALE, Jackson, IL
Built 1962 Load: 25.3 t ADT: 7,100
FS RTE. 346
FairOver: CEDAR CREEK
3 MI NW OF POMONA, Jackson, IL
Built 1989 Load: 25.3 t ADT: 100
CHICAGO ST
FairOver: FOX RIVER
0.06 MI E. OF IL-31, Kane, IL
Built 1939 Load: 25.3 t ADT: 12,400
STEVENS ROAD
FairOver: STONEY CREEK
1.0MI N MACDONALD RD, Kane, IL
Built 1969 Load: 25.3 t ADT: 3,650
CH 53
FairOver: LITTLE BEAVER CR
6.7 MI E ST.ANNE, Kankakee, IL
Built 1966 Load: 25.3 t ADT: 625
ILL 71/FAP 311
FairOver: STREAM
2.88 MI NE OF FAI 80, LaSalle, IL
Built 1942 Load: 25.3 t ADT: 5,600
FAS 174/CH 9
FairOver: SUTPHENS RUN
E 12TH,N 4400, LaSalle, IL
Built 1955 Load: 25.3 t ADT: 450
WOODLAWN RD
FairOver: STEWARD CR
1.5 MI S OF PERRY RD, Lee, IL
Built 1955 Load: 25.3 t ADT: 125
TR 47B
FairOver: CREEK
2340 E, 2700 N, Livingston, IL
Built 1950 Load: 25.3 t ADT: 10
NIANTIC RD
FairOver: S FORK LAKE FORK CK
1.5 MI S LATHAM, Logan, IL
Built 1969 Load: 25.3 t ADT: 225
TR 199
FairOver: LAKE FORK CK. TRIB.
2 MI SE ELKHART, Logan, IL
Built 1974 Load: 25.3 t ADT: 75
TR 424
FairOver: HONEY CREEK
7.0 MI N EADARVILLE, Macoupin, IL
Built 1930 Load: 25.3 t ADT: 20
TR 496
FairOver: MACOUPIN CR
3 NE STANDARD CY, Macoupin, IL
Built 1900 Load: 25.3 t ADT: 20
US 51 (FAP 322)
FairOver: LOUSE RUN TRIBUTARY
7.5 MI S FAYETTE C L, Marion, IL
Built 1920 Load: 25.3 t ADT: 2,750
CH-30
FairOver: SKILLET FORK
1 MI SW HELM, Marion, IL
Built 1915 Load: 25.3 t ADT: 75
TR 85 (TH-C69)
FairOver: CREEK
T12N-R8E-4PM SEC 26, Marshall, IL
Built 1970 Load: 25.3 t ADT: 50
TR 12 (TH-R63)
FairOver: DEER CREEK
T12N-R8E-4PM SEC 34, Marshall, IL
Built 1975 Load: 25.3 t ADT: 25
FAS 1438 - CH 14
FairOver: E FORK LAMOINE RIVER
CTR-34-T6NR3W, McDonough, IL
Built 1959 Load: 25.3 t ADT: 900
COON CREEK RD
FairOver: COON CREEK
0.6 M S OF IL 23, McHenry, IL
Built 1979 Load: 25.3 t ADT: 175
STREIT RD
FairOver: NO BR KISHWAUKEE R
3.5 MI E OF US 14, McHenry, IL
Built 2007 Load: 25.3 t ADT: 100
FAS 294/OLD 66A
FairOver: INTER STREAM
11.05 MI S OF US 24, McLean, IL
Built 1954 Load: 25.3 t ADT: 2,950
TR 547
FairOver: BR LONE TREE CREEK
2.5 MI SE BELLFLOWER, McLean, IL
Built 1975 Load: 25.3 t ADT: 50
TR 112
FairOver: TIMBER CREEK
1.0MI NE FUNKS GROVE, McLean, IL
Built 1974 Load: 25.3 t ADT: 25
TR 247
FairOver: MAIDS RUN CREEK
NE-23-T13NR3W, Mercer, IL
Built 1972 Load: 25.3 t ADT: 25
TR 162
FairOver: MAIDS RUN
CTR-22-T13NR3W, Mercer, IL
Built 1978 Load: 25.3 t ADT: 50
STILLMAN ROAD
FairOver: STILLMAN CREEK
N EDGE STILLMAN VALL, Ogle, IL
Built 1986 Load: 25.3 t ADT: 2,350
BRIMFIELD RD-CH R2
FairOver: FRENCH CREEK
W1/2-25-MILLBROOK, Peoria, IL
Built 1958 Load: 25.3 t ADT: 300
TR 376
FairOver: E PRONG SPRING CREEK
2.0 MI SE NEBO, Pike, IL
Built 1950 Load: 25.3 t ADT: 50
ILL 26
FairOver: STREAM
6.88 MI S OF ILL 71, Putnam, IL
Built 1956 Load: 25.3 t ADT: 800
TR-129
FairOver: CASE CREEK
5 MI SE MILAN, Rock Island, IL
Built 1963 Load: 25.3 t ADT: 225
TR 419
FairOver: SUGAR CREEK
1 MI EAST OF AUBURN, Sangamon, IL
Built 1973 Load: 25.3 t ADT: 175
TR 114
FairOver: MUD RUN
NW-32-T12NR7E, Stark, IL
Built 1984 Load: 25.3 t ADT: 25
WARREN ROAD
FairOver: E SPAFFORD CR
5 MI. WEST WINSLOW, Stephenson, IL
Built 1962 Load: 25.3 t ADT: 375
ILL 29
FairOver: MAIN DITCH TRIB
3 MI S OF ILL 122, Tazewell, IL
Built 1962 Load: 25.3 t ADT: 1,150
WILDLIFE DR - TR 2
FairOver: LITTLE MACKINAW R.
SW-16-T23NR3W, Tazewell, IL
Built 1969 Load: 25.3 t ADT: 75
TR 62
FairOver: SEMINARY FORK
1.5 MI S ALTO PASS, Union, IL
Built 1981 Load: 25.3 t ADT: 50
FAS-2818
FairOver: SKILLET FORK CR
2.7 MI S ORCHARDVILL, Wayne, IL
Built 1948 Load: 25.3 t ADT: 900
I- 55 SB
FairOver: ABANDONED RR
2.3 M N OF US 30, Will, IL
Built 1956 Load: 25.3 t ADT: 40,900
PERRYVILLE RD
FairOver: S. BR. WILLOW CREEK
.4 MI. N. HARLEM RD, Winnebago, IL
Built 1998 Load: 25.3 t ADT: 16,000
LOVE ROAD
FairOver: N KINNICKINNICK CR
0.5 MI N ELEVATOR RD, Winnebago, IL
Built 1968 Load: 25.3 t ADT: 2,450
EAST LAWN DR
FairOver: KEITH CREEK,SOUTH BR
0.2 MI S OF E STATE, Winnebago, IL
Built 1966 Load: 25.3 t ADT: 1,650
TR 0262
FairOver: TOURMEAL CRK
2.0 MI SE BURTON, Adams, IL
Built 1900 Load: 25.6 t ADT: 100
NO DATA ENTERED
FairOver: WOLF CREEK
T15SR2WS18, Alexander, IL
Built 2003 Load: 25.6 t ADT: 1
CH 6
FairOver: WELLS FORK
5.5 MI SO TIMEWELL, Brown, IL
Built 1949 Load: 25.6 t ADT: 450
Showing 5,801-5,850 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 |