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
ILL 34
GoodOver: DRAINAGE DITCH
0.3 MI N HARRISBURG, Saline, IL
Built 2009 Load: 40.5 t ADT: 3,100
VETERANS/IL 4 (NB)
GoodOver: SPRING CREEK
.9M E IL29/WALNUT ST, Sangamon, IL
Built 1997 Load: 40.5 t ADT: 12,400
VETERANS/IL 4 (SB)
GoodOver: SPRING CREEK
.9M E IL29/WALNUT ST, Sangamon, IL
Built 1997 Load: 40.5 t ADT: 12,400
IL 29
GoodOver: CANTRALL CREEK TRIB.
S EDGE CANTRALL, Sangamon, IL
Built 1993 Load: 40.5 t ADT: 2,350
ILL 100
GoodOver: WALNUT CREEK
1.5MI N JCTIL100&106, Scott, IL
Built 1984 Load: 40.5 t ADT: 1,000
BUNKUM RD/FAU 9160
GoodOver: HARDING DITCH
1 MI E IL 111, St. Clair, IL
Built 2008 Load: 40.5 t ADT: 1,500
TR 140
GoodOver: BEAN CREEK
1 MI E OF POTOMAC, Vermilion, IL
Built 1987 Load: 40.5 t ADT: 50
FAP-855 (ILL-14)
GoodOver: STREAM
3.5 MI E ENFIELD JCT, White, IL
Built 1994 Load: 40.5 t ADT: 3,050
US 30
GoodOver: DEER CREEK
5.5 MI. E. MORRISON, Whiteside, IL
Built 2000 Load: 40.5 t ADT: 6,100
COUNTY LINE RD
GoodOver: DRESDEN COOLING LAKE
0.2 MI N LORENZO RD, Will, IL
Built 1971 Load: 40.5 t ADT: 1,250
MANHATTAN-MONEE RD
GoodOver: STREAM
2.8 MI E.CENTER RD, Will, IL
Built 1974 Load: 40.5 t ADT: 5,250
LAKE OF EGYPT RD
GoodOver: LAKE EGYPT SPILLWAY
6 MI S MARION, Williamson, IL
Built 1962 Load: 40.5 t ADT: 2,800
ROCKTON RD
GoodOver: ROCK RIVER
.4 MI W. OF ROCKTON, Winnebago, IL
Built 1990 Load: 40.5 t ADT: 2,200
SAMUELSON ROAD
GoodOver: UNNAMED DRAIN. DITCH
0.64 MI E OF 11TH ST, Winnebago, IL
Built 1977 Load: 40.5 t ADT: 3,000
CH 9 (FAS 580)
GoodOver: Mud Creek
1 MI W ARENZVILLE, Cass, IL
Built 2021 Load: 40.8 t ADT: 525
FAP 326 (IL 47)
GoodOver: SANGAMON RIVER
S OF MAHOMET, Champaign, IL
Built 2009 Load: 40.8 t ADT: 5,000
FAU 7138
GoodOver: COPPER SLOUGH
0.2 MI E OF I-57, Champaign, IL
Built 1970 Load: 40.8 t ADT: 8,250
FAP 824
GoodOver: Flat Branch
W. of Humboldt, Coles, IL
Built 2023 Load: 40.8 t ADT: 2,800
Broadway Avenue
GoodOver: Silver Creek
100 S. of IL 64, Cook, IL
Built 2023 Load: 40.8 t ADT: 6,900
IL 116 FAP 681
GoodOver: DRAINAGE DITCH
3.3 MI E OF IL 115, Ford, IL
Built 2012 Load: 40.8 t ADT: 775
ILLINOIS 1
GoodOver: CANE CREEK
1 MI. SOUTH OF OMAHA, Gallatin, IL
Built 1978 Load: 40.8 t ADT: 1,400
TR 153
GoodOver: MILLRACE SLOUGH
2 MI NE OLD S'TOWN, Gallatin, IL
Built 1981 Load: 40.8 t ADT: 10
FAS 738
GoodOver: HURRICANE CREEK
1.5 MI E HILLVIEW, Greene, IL
Built 1940 Load: 40.8 t ADT: 400
IL 96
GoodOver: CRYSTAL CREEK
3.1M S US136,HAMILTN, Hancock, IL
Built 1994 Load: 40.8 t ADT: 1,900
TR 382-B
GoodOver: MUD CREEK
5.5 MI NW KEWANEE, Henry, IL
Built 1977 Load: 40.8 t ADT: 75
TR 51
GoodOver: BEAVER DITCH NO. 1
5.3 MI E MARTINTON, Iroquois, IL
Built 2023 Load: 40.8 t ADT: 75
TR 5
GoodOver: DRAINAGE DITCH
4.75 W,3.5 N CLIFTON, Iroquois, IL
Built 1987 Load: 40.8 t ADT: 50
TR 135 S APPLE RV
GoodOver: APPLE RIVER
1.5 M NW OF WOODBINE, Jo Daviess, IL
Built 2021 Load: 40.8 t ADT: 10
ILL 146
GoodOver: MCCORKLE CREEK
0.3 MI E. OF I-24, Johnson, IL
Built 1971 Load: 40.8 t ADT: 2,700
IL 31
GoodOver: FERSON CREEK OVERFLO
1.6 M N of IL 64, Kane, IL
Built 2016 Load: 40.8 t ADT: 11,700
US 20 & IL 47
GoodOver: TYLER CREEK
.12M S OF IL72 INTER, Kane, IL
Built 2014 Load: 40.8 t ADT: 21,400
WALKER ROAD
GoodOver: BURLINGTON CREEK
2 MI W HAMPSHIRE, Kane, IL
Built 2015 Load: 40.8 t ADT: 1,150
FAS-97 (W CL Road)
GoodOver: Union Dr. Ditch #3
2 MI N. OF IL 38, Kane, IL
Built 2018 Load: 40.8 t ADT: 2,050
I-88 E-W TOLL RD.
GoodOver: CREEK
.8 M W DUPAGE CO., Kane, IL
Built 1958 Load: 40.8 t ADT: 50,100
CH 15 INDIAN HEAD
GoodOver: GREEN RIVER RD
7.5MI W OF HARMON, Lee, IL
Built 2013 Load: 40.8 t ADT: 300
US RTE 24
GoodOver: STREAM
E EDGE OF CHATSWORTH, Livingston, IL
Built 1995 Load: 40.8 t ADT: 2,150
IL 17
GoodOver: Drainage Ditch
3.4 MI E OF 17 & 23, Livingston, IL
Built 2023 Load: 40.8 t ADT: 525
TR 125
GoodOver: ROOKS CREEK
935 E, 1800 N, Livingston, IL
Built 1977 Load: 40.8 t ADT: 125
TR 108 (1300E)
GoodOver: TRIB BAKER RUN
2180 N, 1300 E, Livingston, IL
Built 2019 Load: 40.8 t ADT: 200
TR 118
GoodOver: MUD CREEK
2695 N, 1400 E, Livingston, IL
Built 2021 Load: 40.8 t ADT: 25
TR-196
GoodOver: SALT CR TRIB
2.5 NW MT PLKSKY, Logan, IL
Built 2006 Load: 40.8 t ADT: 100
FAU 7464 (IL 48)
GoodOver: STREAM
1 MI S OREANA, Macon, IL
Built 2013 Load: 40.8 t ADT: 3,300
FAU 7426 (TAYLOR R
GoodOver: WARD BRANCH
0.64 MI S OF IL 48, Macon, IL
Built 2020 Load: 40.8 t ADT: 1,500
ILL 4
GoodOver: HURRICANE CREEK
4.2MI N CARLINVILLE, Macoupin, IL
Built 1997 Load: 40.8 t ADT: 2,900
IL 255 SB
GoodOver: UPRR
4 mi N of I-270, Madison, IL
Built 1995 Load: 40.8 t ADT: 28,300
IL 140
GoodOver: E Fork Silver Creek
0.5mi E of IL 160, Madison, IL
Built 2012 Load: 40.8 t ADT: 1,700
US 51 NB (FAP 322)
GoodOver: CROOKED CREEK
N OF CENTRAL CITY, Marion, IL
Built 1982 Load: 40.8 t ADT: 4,050
TR-1
GoodOver: WEBSTER CREEK
4 MI W WALNUT HILL, Marion, IL
Built 1982 Load: 40.8 t ADT: 225
TR 13(TH-C 55)
GoodOver: SCHOLES BRANCH
T13N-R8E-4PM SEC 12, Marshall, IL
Built 1992 Load: 40.8 t ADT: 50
US 45-FAP 889
GoodOver: MASSAC CREEK
1.5 MI W I-24, Massac, IL
Built 1999 Load: 40.8 t ADT: 12,800
Showing 23,551-23,600 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |