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
FAS 457-DICKSON MN
FairOver: CRABTREE CREEK
3 MI N US136 & IL 78, Fulton, IL
Built 1991 Load: 53.8 t ADT: 525
IL 96
FairOver: DRAINAGE DITCH
3.8M E NAUVOO CENTER, Hancock, IL
Built 1929 Load: 53.8 t ADT: 1,250
CARMAN RD
FairOver: ELLISON CREEK
3 MI S US 34, Henderson, IL
Built 2015 Load: 53.8 t ADT: 3,200
FAU 6659 FARMNGTN
FairOver: KICKAPOO CR
FAU 6659 AND CH 77, Peoria, IL
Built 2019 Load: 53.8 t ADT: 10,400
FAS 600
FairOver: BAY CREEK
1.0 MI E TIME, Pike, IL
Built 1885 Load: 53.8 t ADT: 225
FAI 280 WB
FairOver: IAIS RR
.5 MI W OF US 67, Rock Island, IL
Built 1968 Load: 53.8 t ADT: 9,850
IL 29 (SB)
FairOver: S FK SANGAMON RIVER
2.4M SE I-55 INTCHG, Sangamon, IL
Built 1928 Load: 53.8 t ADT: 13,500
FAP-825 (ILL-15)
FairOver: BONPAS CREEK
3.5 MI W BELLMONT, Wabash, IL
Built 1958 Load: 53.8 t ADT: 2,800
US 24
FairOver: PANTHER CREEK
4.2 MI W OF I39/US51, Woodford, IL
Built 1948 Load: 53.8 t ADT: 4,050
FAP 326 (IL 47)
FairOver: STREAM
4.5 MI N MAHOMET, Champaign, IL
Built 1982 Load: 54.1 t ADT: 3,600
FAI-57
FairOver: EAST FORK KASKASKIA
.5 MI N MARION CO LN, Fayette, IL
Built 1970 Load: 54.1 t ADT: 18,100
IL 82
FairOver: N. BR. EDWARDS RIVER
2 MI S OF CAMBRIDGE, Henry, IL
Built 1989 Load: 54.1 t ADT: 1,500
ILL 49
FairOver: LITTLE MUD CREEK
12.62 M S US 24, Iroquois, IL
Built 1993 Load: 54.1 t ADT: 1,000
FAS 1909-IL 127
FairOver: CEDAR CREEK
S OF ETHERTON, Jackson, IL
Built 1994 Load: 54.1 t ADT: 1,750
US 12
FairOver: PISTAKEE LAKE CHAN
1/2 M N OF Grand Ave, Lake, IL
Built 1990 Load: 54.1 t ADT: 21,400
I-39/US 51 SB
FairOver: SANDY CREEK
1.23 MI N OF ILL 18, LaSalle, IL
Built 1988 Load: 54.1 t ADT: 9,700
I-39/US 51 NB
FairOver: SANDY CREEK
1.22 MI N OF ILL 18, LaSalle, IL
Built 1988 Load: 54.1 t ADT: 9,700
OLD US 66/ SBI-4C
FairOver: DRAINAGE DITCH
0.03 MI NE OF ILL 47, Livingston, IL
Built 1981 Load: 54.1 t ADT: 175
I-39/US 51(SB)
FairOver: SANDY CREEK
2.60 MI S OF ILL 18, Marshall, IL
Built 1990 Load: 54.1 t ADT: 8,250
I-39/US 51(NB)
FairOver: SANDY CREEK
2.61 MI S OF ILL 18, Marshall, IL
Built 1990 Load: 54.1 t ADT: 8,250
FAI 280 EB
FairOver: IAIS RR
.5 MI W OF US 67, Rock Island, IL
Built 1968 Load: 54.1 t ADT: 9,850
IL 99
FairOver: CEDAR CREEK
.64M N CAMDEN CTR, Schuyler, IL
Built 1985 Load: 54.1 t ADT: 400
US 20 BR
FairOver: YELLOW CREEK
1 MI E FREEPORT, Stephenson, IL
Built 1956 Load: 54.1 t ADT: 7,000
US 20 & PRIVATE RD
FairOver: SILVER CREEK TRIB
4 MI E OF FREEPORT, Stephenson, IL
Built 1959 Load: 54.1 t ADT: 12,700
IL 9
FairOver: MUD CREEK
2.5 MI W OF MACKINAW, Tazewell, IL
Built 2014 Load: 54.1 t ADT: 2,700
I- 55 WEST FRNT RD
FairOver: I & M CANAL
1.1 M S OF I-80, Will, IL
Built 1956 Load: 54.1 t ADT: 2,650
KISHWAUKEE RD
FairOver: CANAL CREEK
0.8 MI NE CONDON RD, Winnebago, IL
Built 1979 Load: 54.1 t ADT: 4,550
PERRYVILLE RD
FairOver: SPRING CREEK
0.4 MI N SPRING BRK, Winnebago, IL
Built 1994 Load: 54.1 t ADT: 21,200
SHERIDAN RD
FairOver: RAVINE NO 1
0.5 M S LAKE CO, Cook, IL
Built 1923 Load: 54.4 t ADT: 2,750
CENTRAL AVE.
FairOver: ICG RR & GROUND
0.08M.S.OF I-55, Cook, IL
Built 1964 Load: 54.4 t ADT: 34,100
I-88 EB
FairOver: W BR DUPAGE RIVER
ILL 5 1.5E ILL 59, DuPage, IL
Built 1958 Load: 54.4 t ADT: 65,750
I-88 WB
FairOver: W BR DUPAGE RIVER
ILL 5 1.5M E ILL 59, DuPage, IL
Built 1958 Load: 54.4 t ADT: 65,750
IL 94 (NB)
FairOver: SLATER CREEK
1.1M N WEST PT. SPUR, Hancock, IL
Built 2003 Load: 54.4 t ADT: 4,050
IL 94 (SB)
FairOver: SLATER CREEK
1.1M N WEST PT. SPUR, Hancock, IL
Built 2002 Load: 54.4 t ADT: 4,050
DOWNER PLACE
FairOver: FOX RIVER E. BRANCH
400 FT W ILL RTE 25, Kane, IL
Built 1924 Load: 54.4 t ADT: 3,550
IL 120 EB
FairOver: RR - CP
0.75 M W OF US 41, Lake, IL
Built 1960 Load: 54.4 t ADT: 28,700
IL 120 WB
FairOver: RR - CP
0.75 M W OF US 41, Lake, IL
Built 1960 Load: 54.4 t ADT: 28,700
BLIVIN STREET
FairOver: NIPPERSINK CREEK
.3MI N OF US 12, McHenry, IL
Built 2011 Load: 54.4 t ADT: 2,300
52ND AVE
FairOver: STREAM
W. OF MILAN BELTWAY, Rock Island, IL
Built 2006 Load: 54.4 t ADT: 12,100
I-55 W FR (PALM RD
FairOver: ILLINOIS CENTRAL RR
.9M N GLENARM INTCHG, Sangamon, IL
Built 2011 Load: 54.4 t ADT: 1,200
IL 4 (VETERANS PKW
FairOver: SUGAR CREEK
.07 M W PEORIA RD, Sangamon, IL
Built 1995 Load: 54.4 t ADT: 12,400
FAP 770 (IL 128)
FairOver: ROBINSON CREEK TRIB
.3 MI S FINDLAY RD, Shelby, IL
Built 2009 Load: 54.4 t ADT: 2,850
US 51
FairOver: CACHE CREEK
2 MI N ANNA, Union, IL
Built 1964 Load: 54.4 t ADT: 5,950
ILL 94 & 135
FairOver: HENDERSON CR
2 MI N LITTLE YORK, Warren, IL
Built 1931 Load: 54.4 t ADT: 1,300
IL 40
FairOver: WINNEBAGO DITCH
1 MI N DEER GROVE, Whiteside, IL
Built 2006 Load: 54.4 t ADT: 2,550
I- 55 NB
FairOver: I & M CANAL
1.1 M S OF I-80, Will, IL
Built 1992 Load: 54.4 t ADT: 32,350
COUNTY LINE ROAD
FairOver: KANKAKEE RIVER
1.4 M N LORENZO RD, Will, IL
Built 1974 Load: 54.4 t ADT: 1,250
I-290 IKE-IL 110 C
FairOver: DES PLAINES RIVER
1.1 M W ILL 43, Cook, IL
Built 1958 Load: 54.8 t ADT: 173,800
PALATINE WB FRNT R
FairOver: DES PLAINES RIVER
E US 45 (MILWAUKEE), Cook, IL
Built 1925 Load: 54.8 t ADT: 4,600
PALATINE RD
FairOver: DES PLAINES RIVER
0.1 M E US 45, Cook, IL
Built 1965 Load: 54.8 t ADT: 33,800
Showing 13,551-13,600 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.