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
MOATE ROAD
FairOver: DRAINAGE DITCH
0.3 MI. N. FRITZ RD., Winnebago, IL
Built 1999 Load: 39.5 t ADT: 25
HARRISON AVE
FairOver: ROCK RIVER
0.2 MI E OF ILL RT 2, Winnebago, IL
Built 1975 Load: 39.5 t ADT: 10,200
CHESTNUT ST
FairOver: ROCK RIVER
0.1 MI E OF MAIN ST, Winnebago, IL
Built 1962 Load: 39.5 t ADT: 8,200
FAS 359 CH 4
FairOver: W BR PANTHER CREEK
0.5 MI E ROANOKE, Woodford, IL
Built 1987 Load: 39.5 t ADT: 650
CH 51
FairOver: FALL CREEK
1.0 NE FALL CREEK, Adams, IL
Built 1948 Load: 39.9 t ADT: 500
US BR 20
FairOver: KISHWAUKEE RIVER
E EDGE OF BELVIDERE, Boone, IL
Built 1986 Load: 39.9 t ADT: 11,100
US 52 & IL 64
FairOver: PLUM RIVER
0.6MI. E. OF IL 84, Carroll, IL
Built 1999 Load: 39.9 t ADT: 3,450
EILER ROAD - TR 21
FairOver: MIDDLE CREEK
2.5 MI NNW NEWMANSV, Cass, IL
Built 1980 Load: 39.9 t ADT: 25
TR-130
FairOver: LITTLE INDIAN CREEK
2.5 MI SW PHILADELPH, Cass, IL
Built 1983 Load: 39.9 t ADT: 50
CRESCENT DR/ PED B
FairOver: PHINNEY BRANCH
.7MI SE KIRBY/DUNCAN, Champaign, IL
Built 2004 Load: 39.9 t ADT: 450
TR 273
FairOver: COTTONWOOD CREEK
4 MI W MILLERSVILLE, Christian, IL
Built 1996 Load: 39.9 t ADT: 50
OLD US 40
FairOver: KETTERING BRANCH
.23 MI W MARTINSVILL, Clark, IL
Built 1986 Load: 39.9 t ADT: 1,300
FAU 7643
FairOver: CASSEL CREEK
2.0 MI S CHARLESTON, Coles, IL
Built 1937 Load: 39.9 t ADT: 2,350
US 12,20,45 MANNHE
FairOver: RR - UP PROVISO YD
0.3 M S US 20, Cook, IL
Built 1954 Load: 39.9 t ADT: 43,600
JOLIET RD
FairOver: RR - CSXT & IHB
0.2 M NE 55TH ST, Cook, IL
Built 1932 Load: 39.9 t ADT: 9,600
139TH ST
FairOver: RR - CSX & IHB
0.5 M W WESTERN AVE, Cook, IL
Built 1960 Load: 39.9 t ADT: 5,050
IL 171 SB ELEVATED
FairOver: STA 53&15 TO 63&18
0.5 M SE JOLIET RD, Cook, IL
Built 1964 Load: 39.9 t ADT: 40,100
IL 394 SB
FairOver: RR - CN
.2 MI S. I-80, Cook, IL
Built 2006 Load: 39.9 t ADT: 89,200
ISABELLA ST
FairOver: N SHORE CHANNEL
1 M E GREEN BAY P6, Cook, IL
Built 1908 Load: 39.9 t ADT: 1,300
I-294 NB
FairOver: DES PLAINES RIV
0.6 M S ILL 62 P11, Cook, IL
Built 1958 Load: 39.9 t ADT: 82,250
I-74 (EB)
FairOver: SALT CREEK
E FARMER CITY, De Witt, IL
Built 1970 Load: 39.9 t ADT: 10,750
FAS 1751(US-40)
FairOver: HURRICANE CREEK
2.3 MI E BOND CO LN, Fayette, IL
Built 1943 Load: 39.9 t ADT: 1,400
ILL 78 & 97
FairOver: SPOON RIVER OVERFLOW
1.5 MI N JCT US 136, Fulton, IL
Built 1989 Load: 39.9 t ADT: 3,000
CAMP RD - TR 126
FairOver: TATER CREEK
SW-31-T5NR2E, Fulton, IL
Built 1989 Load: 39.9 t ADT: 50
TR 52
FairOver: ROBINSON CREEK
2.0 MI E NAUVOO, Hancock, IL
Built 1984 Load: 39.9 t ADT: 50
ILL 34
FairOver: HICKS BRANCH
3.2 MI S OF HEROD, Hardin, IL
Built 1924 Load: 39.9 t ADT: 1,200
FAS 1324/OLD US 45
FairOver: LANGAN CREEK
2.3 MI S OF CHEBANSE, Iroquois, IL
Built 1987 Load: 39.9 t ADT: 1,900
ILL 17 WB
FairOver: DRAIN DT
3.5 M E OF KANKAKEE, Kankakee, IL
Built 1964 Load: 39.9 t ADT: 11,900
ILL 17 EB
FairOver: DRAIN DT
3.5 M E OF KANKAKEE, Kankakee, IL
Built 1964 Load: 39.9 t ADT: 11,900
CH 35
FairOver: MINNIE CR
3.5 MI S KANKAKEE, Kankakee, IL
Built 1905 Load: 39.9 t ADT: 150
TR 142
FairOver: N BRANCH ROCK CREEK
3MI NW MANTENO, Kankakee, IL
Built 1969 Load: 39.9 t ADT: 250
FAU 6189/RIVER RD
FairOver: GAR CREEK
.1 MI E RTE 45/52, Kankakee, IL
Built 2001 Load: 39.9 t ADT: 2,650
PLATTVILLE RD
FairOver: AUX SABLE CREEK
0.7 MI E OF RTE 47, Kendall, IL
Built 1995 Load: 39.9 t ADT: 300
I-94 NB
FairOver: DES PLAINES RIVER
I94 .7M N ILL 120, Lake, IL
Built 1958 Load: 39.9 t ADT: 47,800
TR 322A
FairOver: OTTER CREEK
E 19TH N 1500, LaSalle, IL
Built 1934 Load: 39.9 t ADT: 275
IL 251
FairOver: WILLOW CREEK
0.8 MI. N. OF US 30, Lee, IL
Built 2000 Load: 39.9 t ADT: 1,100
FAP 716 (IL 48)
FairOver: SPRING CREEK
N OF MCKINLEY AVE, Macon, IL
Built 2007 Load: 39.9 t ADT: 14,800
CH 73
FairOver: PADDOCK CREEK
4.5 MI E MEADOWBROOK, Madison, IL
Built 1987 Load: 39.9 t ADT: 1,950
TR 121
FairOver: SEVEN MILE CREEK
0.25 MI W OF CH 8, Massac, IL
Built 1990 Load: 39.9 t ADT: 50
TR 0092
FairOver: MACOUPIN CK
1.2 MI NE FARMERSVLE, Montgomery, IL
Built 1973 Load: 39.9 t ADT: 50
ILL 38
FairOver: KYTE CREEK
.4 MI E OF ILL 251, Ogle, IL
Built 1983 Load: 39.9 t ADT: 8,150
TR 284
FairOver: S FORK MCKEE CREEK
1.2 MI NE N SALEM, Pike, IL
Built 1959 Load: 39.9 t ADT: 250
FAS 941
FairOver: INDIAN CAMP CREEK
ULLIN, Pulaski, IL
Built 1996 Load: 39.9 t ADT: 1,200
VETERANS/IL 4 (SB)
FairOver: SPRING CREEK
.27M S JEFFRSN/IL125, Sangamon, IL
Built 1984 Load: 39.9 t ADT: 22,100
ILL 93
FairOver: E FORK SPOON RIVER
2.5 MI W OF BRADFORD, Stark, IL
Built 1993 Load: 39.9 t ADT: 950
TR 33D
FairOver: DEER CREEK
SE.COR-6-T25NR2W, Tazewell, IL
Built 1975 Load: 39.9 t ADT: 200
TR 133A
FairOver: PRAIRIE CREEK
E.CTR-29-T24NR3W, Tazewell, IL
Built 1975 Load: 39.9 t ADT: 75
TR 15
FairOver: WHISKEY CREEK
2 mi S of Rankin, Vermilion, IL
Built 2020 Load: 39.9 t ADT: 50
FAP-823 (ILL-15)
FairOver: POND CREEK
1.5 MI E FAIRFIELD, Wayne, IL
Built 1984 Load: 39.9 t ADT: 3,900
GARDEN PLAIN ROAD
FairOver: CATTAILCREEK
5.2 MI. SW. US 30, Whiteside, IL
Built 1990 Load: 39.9 t ADT: 725
Showing 12,001-12,050 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.