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
SAXTOWN RD/ CH 71
FairOver: WEST FORK CREEK
2.5 MI S MILLSTADT, St. Clair, IL
Built 1985 Load: 32.4 t ADT: 750
RISDON SCHL/ FAS 8
FairOver: DOZA CREEK
3.0 MI SW MARISSA, St. Clair, IL
Built 1986 Load: 32.4 t ADT: 325
RISDON SCHL/ FAS 8
FairOver: BRANCH OF DOZA CREEK
0.5 MI SW MARISSA, St. Clair, IL
Built 1986 Load: 32.4 t ADT: 325
FIVE FORKSE.RD/CH
FairOver: SILVER CR
4 M SSE FREEBURG, St. Clair, IL
Built 1987 Load: 32.4 t ADT: 350
FAU 9212
FairOver: MO. PAC. R.R.
PARKS AIRPORT CAHOKI, St. Clair, IL
Built 1980 Load: 32.4 t ADT: 6,450
FAU 9241
FairOver: HARDIN DITCH
100'S ST. CLAIR AVE, St. Clair, IL
Built 1991 Load: 32.4 t ADT: 2,850
HARTMAN LN/ FAU 91
FairOver: RICHLAND CREEK
2.25 MI S LINCOLN TR, St. Clair, IL
Built 1992 Load: 32.4 t ADT: 10,000
ROBINSON SCH RD/CH
FairOver: RICHLAND CREEK
1.5 MI E IL 159, St. Clair, IL
Built 1993 Load: 32.4 t ADT: 400
WATERLOO RD/ FAS 8
FairOver: PRAIRIE DULONG CREEK
.8 MI W FLORAVILLE, St. Clair, IL
Built 1994 Load: 32.4 t ADT: 1,600
WINTER RD CH 49
FairOver: DOZA CREEK NORTH
2.25 MI S IL 13, St. Clair, IL
Built 1993 Load: 32.4 t ADT: 175
DOUGLAS-MILLSTADT
FairOver: DOUGLAS CREEK
0.5 MI W IL 159, St. Clair, IL
Built 1996 Load: 32.4 t ADT: 3,200
DOUGLAS FREEBURG R
FairOver: RICHLAND CREEK
1 MI E OF IL 159, St. Clair, IL
Built 2006 Load: 32.4 t ADT: 3,950
KARCH RD/TR 201
FairOver: DRUM HILL BRANCH
1.8 ME ILL 15, St. Clair, IL
Built 1981 Load: 32.4 t ADT: 325
CLOVER LEAF/ TR 10
FairOver: PRAIRIE DUPONT CREEK
2.0 MI E ILL 163, St. Clair, IL
Built 1982 Load: 32.4 t ADT: 125
VILLA DR/FAU 9258
FairOver: PR DUPONT CREEK
3.3 MI W 59 ST, St. Clair, IL
Built 1983 Load: 32.4 t ADT: 250
LEBANON TROY TR 5
FairOver: SILVER CR
0.25 MI W RICHWOOD R, St. Clair, IL
Built 1986 Load: 32.4 t ADT: 300
RIESS ROADTR 129
FairOver: RAYHILL SLOUGH
0.1 MI E WOODLAND RD, St. Clair, IL
Built 1987 Load: 32.4 t ADT: 50
MILBURN SCH RD/TR
FairOver: OGLE CREEK
1.25 N I64/50 INTCHG, St. Clair, IL
Built 1990 Load: 32.4 t ADT: 6,550
DOZA CREEK RD
FairOver: DOZA CREEK
0.25M S OF CH24, St. Clair, IL
Built 1996 Load: 32.4 t ADT: 375
TR-186 Risdon Sch
FairOver: Doza Creek
1.5MI WEST OF CH 27, St. Clair, IL
Built 1998 Load: 32.4 t ADT: 75
BOWLER RD
FairOver: OGLES CREEK
.25MI N OF CH45, St. Clair, IL
Built 1998 Load: 32.4 t ADT: 275
ILL 78
FairOver: WALNUT CR TRIB
3 MI N OF W JERSEY, Stark, IL
Built 2002 Load: 32.4 t ADT: 2,350
ILL 78
FairOver: WALNUT CR TRIB
1.5 MI N OF W JERSEY, Stark, IL
Built 2002 Load: 32.4 t ADT: 2,350
ILL 91
FairOver: JACK CREEK
5 MI N OF TOULON, Stark, IL
Built 2007 Load: 32.4 t ADT: 1,300
FAS 373 - CH 4
FairOver: SPOON RIVER
NW-33-T12NR6E, Stark, IL
Built 1984 Load: 32.4 t ADT: 100
CH 10
FairOver: SPOON RIVER
CTR-14-T12NR6E, Stark, IL
Built 1981 Load: 32.4 t ADT: 250
FAS 376-W JERSEY R
FairOver: WALNUT CREEK
SW-17-T12NR5E, Stark, IL
Built 2009 Load: 32.4 t ADT: 500
TR 25
FairOver: SPOON RIVER
N.CTR-22-T14NR6E, Stark, IL
Built 1981 Load: 32.4 t ADT: 50
TR 57
FairOver: INDIAN CREEK
NW-2-T13NR5E, Stark, IL
Built 1995 Load: 32.4 t ADT: 50
TR 120
FairOver: EF SPOON RIVER
N.CTR-4-T14NR7E, Stark, IL
Built 1977 Load: 32.4 t ADT: 25
TR 130
FairOver: E F SPOON RIVER
NE COR-21-T14NR7E, Stark, IL
Built 1979 Load: 32.4 t ADT: 50
TR 118
FairOver: COOPER'S DEFEAT
SW COR-32-T14NR7E, Stark, IL
Built 1977 Load: 32.4 t ADT: 25
TR 101
FairOver: SPOON RIVER
NE COR-26-T13NR6E, Stark, IL
Built 1985 Load: 32.4 t ADT: 200
TR 124
FairOver: MUD RUN
SW-33-T12NR7E, Stark, IL
Built 2000 Load: 32.4 t ADT: 25
US 20 EB
FairOver: SILVER CREEK
.5 MI E SPRINGFLD RD, Stephenson, IL
Built 1987 Load: 32.4 t ADT: 6,200
US 20
FairOver: CREEK
1.37MI E FAIRVIEW RD, Stephenson, IL
Built 1900 Load: 32.4 t ADT: 6,150
PEARL CITY RD
FairOver: YELLOW CR BRANCH
3 MI. EAST PEARL CTY, Stephenson, IL
Built 1927 Load: 32.4 t ADT: 2,600
WARREN ROAD
FairOver: SPAFFORD CREEK
6 MI. W. OF WINSLOW, Stephenson, IL
Built 1962 Load: 32.4 t ADT: 375
DEAN ROAD
FairOver: ROCK RUN CREEK
1.2 M W OF DAVIS, Stephenson, IL
Built 1964 Load: 32.4 t ADT: 50
W BRUSH CREEK ROAD
FairOver: RICHLAND CREEK
0.8 MI W OF ILL 26, Stephenson, IL
Built 1977 Load: 32.4 t ADT: 75
EAST LAMM ROAD
FairOver: CRANES GROVE CREEK
0.5 MI E OF ILL 26, Stephenson, IL
Built 1980 Load: 32.4 t ADT: 625
W WINNESHEIK ROAD
FairOver: PECATONICA RIVER
1.4 MI N OF US RT 20, Stephenson, IL
Built 1983 Load: 32.4 t ADT: 250
W RADERS ROAD
FairOver: BR OF YELLOW CREEK
0.1 MI E OF ILL 73, Stephenson, IL
Built 1981 Load: 32.4 t ADT: 50
OLD MILL ROAD
FairOver: MUDDY CREEK
.5 MI N OF MCCONNELL, Stephenson, IL
Built 1989 Load: 32.4 t ADT: 50
I-74
FairOver: BULL RUN
1MI E OF MORTON AVE, Tazewell, IL
Built 1961 Load: 32.4 t ADT: 26,200
US 24
FairOver: FARM CREEK
1.5 MI E METAMORA RD, Tazewell, IL
Built 1995 Load: 32.4 t ADT: 6,200
ILL 98
FairOver: LICK CREEK OVERFLOW
E JCT IL29 AND IL98, Tazewell, IL
Built 1999 Load: 32.4 t ADT: 3,750
FAS 468-CH 12
FairOver: W. F. SUGAR CREEK
CTR-27-T23NR2W, Tazewell, IL
Built 1947 Load: 32.4 t ADT: 950
FAS 468-CH 12
FairOver: STREAM
N.CTR-34-T23NR2W, Tazewell, IL
Built 1947 Load: 32.4 t ADT: 900
TYRRELL RD - TR 76
FairOver: STREAM
SE-23-T24NR5W, Tazewell, IL
Built 1900 Load: 32.4 t ADT: 725
Showing 9,551-9,600 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.