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
FAP 823 (IL 15)
GoodOver: STREAM
3 MI W EDWARDS CL, Wayne, IL
Built 2012 Load: 89.1 t ADT: 2,750
ILL 40
GoodOver: HENNEPIN CANAL FEEDR
.5 MI S OF US 30, Whiteside, IL
Built 1966 Load: 89.1 t ADT: 6,450
EBI80 RMP TOI355NB
GoodOver: HICKORY CR TRIB SWAL
.25M E OF CEDAR RD, Will, IL
Built 2008 Load: 89.1 t ADT: 24,700
NEW ILL RTE 13
GoodOver: SALT CREEK
0.4 M W OF SALINE CO, Williamson, IL
Built 1990 Load: 89.1 t ADT: 9,000
IL 75
GoodOver: DRAINAGE DITCH
0.36 E OF IL 70, Winnebago, IL
Built 2011 Load: 89.1 t ADT: 2,600
I-90
GoodOver: S KINNIKINNICK CREEK
1 MI E OF ROSCOE, Winnebago, IL
Built 1958 Load: 89.1 t ADT: 28,550
I-90
GoodOver: STREAM
1 MI S OF ILL 173, Winnebago, IL
Built 1958 Load: 89.1 t ADT: 30,700
FAP 823 (IL 15)
GoodOver: STREAM
.9 MI W EDWARDS CO L, Wayne, IL
Built 2010 Load: 89.7 t ADT: 2,450
FAI 64
GoodOver: RAYHILL SLOUGH
0.74 W CLINTON CO, St. Clair, IL
Built 1971 Load: 90.7 t ADT: 31,000
CS 0720
GoodOver: BENTON LAKE
0.1 MI E OF IL 37, Franklin, IL
Built 1900 Load: 91.0 t ADT: 450
I-155 & RAMPS B &
GoodOver: N FK PRAIRIE CREEK
.1M N US 136, Logan, IL
Built 1991 Load: 91.0 t ADT: 6,800
IL 71 FAP 311
GoodOver: MISSION CREEK
0.5 MI S OF US 52, LaSalle, IL
Built 2010 Load: 91.4 t ADT: 4,600
I-55
GoodOver: BREWSTER RUN
.5 MI W OF ILL 47, Grundy, IL
Built 1979 Load: 92.7 t ADT: 22,900
I-90
GoodOver: N KINNIKINNICK CREEK
1 MI E OF ROSCOE, Winnebago, IL
Built 1958 Load: 93.3 t ADT: 28,550
FAS 1911 (UNMARKED
GoodOver: DRURY CREEK
0.8 MI N COBDEN, Union, IL
Built 2016 Load: 95.3 t ADT: 1,150
ILL 15 WB TO ILL 1
GoodOver: BR OF RICHLAND CR
E OF ILL 159, St. Clair, IL
Built 1967 Load: 96.2 t ADT: 1,100
I-90
GoodOver: STREAM
.6 MI S RIVERSIDE BL, Winnebago, IL
Built 1958 Load: 96.2 t ADT: 33,150
IL 59
GoodOver: HAMMEL CREEK
0.24 M N OF US 52, Will, IL
Built 2010 Load: 96.9 t ADT: 25,000
I-90
GoodOver: STREAM
1.9 MI E WINN CO LN, Boone, IL
Built 1958 Load: 97.2 t ADT: 25,300
NB RAMP AT LEVERET
GoodOver: STREAM
LEVERETT RD & FAI 57, Champaign, IL
Built 1969 Load: 97.2 t ADT: 1,750
FAP 719 (US 150)
GoodOver: COPPER SLOUGH
W OF CHAMPAIGN, Champaign, IL
Built 1964 Load: 97.2 t ADT: 6,950
US 50
GoodOver: SUGAR CREEK OVERFLOW
0.75 MI NW AVISTON, Clinton, IL
Built 1980 Load: 97.2 t ADT: 7,700
I-90
GoodOver: Stream
0.5 Mi NW of Ill. 83, Cook, IL
Built 2016 Load: 97.2 t ADT: 147,300
I-90
GoodOver: POPLAR CREEK
0.3 M E IL-72, Cook, IL
Built 1958 Load: 97.2 t ADT: 141,600
I-90
GoodOver: Poplar Creek
2.5 Mi. E. Ill. 72, Cook, IL
Built 2016 Load: 97.2 t ADT: 154,300
US 67
GoodOver: TRIB TO APPLE CREEK
2.61 mi S Whitehall, Greene, IL
Built 1974 Load: 97.2 t ADT: 3,650
US 136
GoodOver: W FORK BEAR CREEK
W MAPLE ST.,ELVASTON, Hancock, IL
Built 1976 Load: 97.2 t ADT: 2,900
ILL 13
GoodOver: STREAM
1 MI.NW CARBONDALE, Jackson, IL
Built 1954 Load: 97.2 t ADT: 13,300
I 57
GoodOver: STREAM
1 MI N BONNIE, Jefferson, IL
Built 1967 Load: 97.2 t ADT: 18,750
ILL 84
GoodOver: TRIB OF APPLE RIVER
2.6 MI SOUTH US 20, Jo Daviess, IL
Built 1984 Load: 97.2 t ADT: 1,700
I 24
GoodOver: MCCORKLE CREEK
0.15 MI S ILL 146, Johnson, IL
Built 1971 Load: 97.2 t ADT: 21,200
IL 132
GoodOver: CREEK
IL 132 & O'PLAIN, Lake, IL
Built 1962 Load: 97.2 t ADT: 22,800
IL 71 FAP 311
GoodOver: MISSION CREEK
1.65 MI N OF US 52, LaSalle, IL
Built 2010 Load: 97.2 t ADT: 5,100
IL 71 FAP 311
GoodOver: CREEK & CATTLE XING
0.32 MI N. OF US 52, LaSalle, IL
Built 2010 Load: 97.2 t ADT: 5,100
ILL 26
GoodOver: GREEN RIVER OVERFLOW
2.6 MI S AMBOY RD, Lee, IL
Built 1981 Load: 97.2 t ADT: 1,500
I-88
GoodOver: CLEARY LATERAL CREEK
4.1 MI SW OF OGLE CO, Lee, IL
Built 1972 Load: 97.2 t ADT: 16,100
I-88
GoodOver: RICKELSON CREEK
0.4 MI SW OGLE CO LN, Lee, IL
Built 1972 Load: 97.2 t ADT: 16,100
FAI 70
GoodOver: MID TRIB SUGAR CREEK
0.8 M E ILL 160, Madison, IL
Built 1963 Load: 97.2 t ADT: 23,600
FAI 270
GoodOver: WATER MAIN
1.13 E OF MISS RIVER, Madison, IL
Built 1964 Load: 97.2 t ADT: 46,200
FAI 55
GoodOver: TRIB TO SILVER CREEK
1.68 S ILL 140, Madison, IL
Built 1955 Load: 97.2 t ADT: 30,100
FAI-57
GoodOver: RACCOON CREEK
2.8 MI N JEFF CO LN, Marion, IL
Built 1966 Load: 97.2 t ADT: 25,000
FAI-57
GoodOver: N TRIB E BR KASK RVR
NE OF KINMUNDY, Marion, IL
Built 1969 Load: 97.2 t ADT: 18,100
US136
GoodOver: STREAM
13.62 M E OF US 51, McLean, IL
Built 1969 Load: 97.2 t ADT: 1,250
I-55
GoodOver: TRIB OF TURKEY CR
1.5 MI NW LEXINGTON, McLean, IL
Built 1974 Load: 97.2 t ADT: 23,400
I-74 RAMP 27.49
GoodOver: DRAINAGE DITCH
.1 M S OF I-74, McLean, IL
Built 1996 Load: 97.2 t ADT: 500
IL 3 Ramps F,B,E &
GoodOver: HILL LAKE CREEK
1.5 M N COLUMBIA, Monroe, IL
Built 1978 Load: 97.2 t ADT: 25,850
ILLINOIS RT. 13
GoodOver: STREAM
1.4 MI. W OF RT. 142, Saline, IL
Built 1971 Load: 97.2 t ADT: 2,600
I-72 / US 36
GoodOver: HOOVER BRANCH
1M E I-55, Sangamon, IL
Built 1974 Load: 97.2 t ADT: 7,250
VETERANS PKWY (IL
GoodOver: LICK CREEK TRIBUTARY
.17M S MATHERS GUN C, Sangamon, IL
Built 1974 Load: 97.2 t ADT: 21,500
FAI 255
GoodOver: GOOSE LAKE DITCH
0.5 M S MOUSETTE LN, St. Clair, IL
Built 1982 Load: 97.2 t ADT: 36,700
Showing 25,501-25,550 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 |