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
IL 171 NB
FairOver: DES PLAINES RIVER
0.2 M NW I-55, Cook, IL
Built 1964 Load: 45.4 t ADT: 40,100
I- 90,94 REV JFK
FairOver: RR - CTA TUNNEL
0.1 M N KEELER, Cook, IL
Built 1959 Load: 45.4 t ADT: 104,800
I-294/I-90E 2 I-29
FairOver: Willow Creek
0.20 Mi S I-90, Cook, IL
Built 1959 Load: 45.4 t ADT: 181,200
IL 83
FairOver: DES PLAINES RIVER
0.6 M N OF ILL 171, DuPage, IL
Built 1934 Load: 45.4 t ADT: 32,400
IL 38
FairOver: E BR DU PAGE RIVER
0.4 M E OF IL 53, DuPage, IL
Built 1989 Load: 45.4 t ADT: 37,700
I-70 WB
FairOver: KASKASKIA RIV
.5 MI E VANDAL INT, Fayette, IL
Built 2015 Load: 45.4 t ADT: 11,350
IL 4
FairOver: Beaucoup Creek
0.5 mi west of IL 13, Jackson, IL
Built 2012 Load: 45.4 t ADT: 1,150
I 64
FairOver: HARPER CREEK
3.3 MI E WOODLAN INT, Jefferson, IL
Built 1974 Load: 45.4 t ADT: 28,300
US 34 FAP 587
FairOver: SUTPHENS RUN
8.71 MI E OF ILL 251, LaSalle, IL
Built 1984 Load: 45.4 t ADT: 1,800
IL 23 FAP 68
FairOver: BUCK CREEK
3.0 MI S OF US 52, LaSalle, IL
Built 2012 Load: 45.4 t ADT: 3,350
FAS 1806 - IL 250
FairOver: SHIRLEY CREEK
SUMNER, Lawrence, IL
Built 2004 Load: 45.4 t ADT: 2,000
N SIU ENT RD NB
FairOver: CAHOKIA CREEK
0.6 MI S ILL 143, Madison, IL
Built 1967 Load: 45.4 t ADT: 2,775
ORCHARD ROAD
FairOver: UN-NAMED CREEK
1.41MI S OF CH 8, Massac, IL
Built 2008 Load: 45.4 t ADT: 25
SB US 67
FairOver: E FORK CROOKED CREEK
1.2MI S WARREN CO LN, McDonough, IL
Built 1996 Load: 45.4 t ADT: 4,850
NB US 67
FairOver: E FORK CROOKED CREEK
1.21MI S WARRN CO LN, McDonough, IL
Built 1996 Load: 45.4 t ADT: 4,850
IL 108
FairOver: SHOP CREEK
.85M W I-55, Montgomery, IL
Built 2001 Load: 45.4 t ADT: 1,550
OLD US 36/MORTON A
FairOver: BN RR
1.7M W I-72/US 36, Morgan, IL
Built 2002 Load: 45.4 t ADT: 7,050
IL 107
FairOver: S FORK MCKEE CREEK
1.8M S MAINE - PERRY, Pike, IL
Built 1957 Load: 45.4 t ADT: 775
TR 23(PULASKI CO)
FairOver: MILL CR
1.0 MI NW OF ULLIN, Pulaski, IL
Built 1986 Load: 45.4 t ADT: 50
Poplar St/Old IL 1
FairOver: DRAINAGE DITCH
W CHENEY ST H'BURG, Saline, IL
Built 1927 Load: 45.4 t ADT: 4,050
FAP 671
FairOver: SPRING CREEK
.48MI E OF WALNUT ST, Sangamon, IL
Built 1975 Load: 45.4 t ADT: 5,300
US 67 SB
FairOver: KCS RR
IN MANCHESTER, Scott, IL
Built 2005 Load: 45.4 t ADT: 3,350
US 67 NB
FairOver: KCS RR
IN MANCHESTER, Scott, IL
Built 2005 Load: 45.4 t ADT: 3,350
I-57 NB
FairOver: BIG CREEK
2 MI N DONGOLA, Union, IL
Built 2021 Load: 45.4 t ADT: 6,600
IL 49(FAP 840)
FairOver: STREAM
1.0 MI N US 150, Vermilion, IL
Built 1982 Load: 45.4 t ADT: 1,350
ILL 116
FairOver: NEGRO CREEK
6 MI E OF ROSEVILLE, Warren, IL
Built 1987 Load: 45.4 t ADT: 1,050
FAP-821 (ILL-15)
FairOver: SKILLET FORK OVERFLO
.6 MI N WAYNE CITY, Wayne, IL
Built 1958 Load: 45.4 t ADT: 3,500
US 20 EB
FairOver: GROVE CREEK
.3MI E STEPHENSON CO, Winnebago, IL
Built 1995 Load: 45.4 t ADT: 13,000
ILL 251 SB
FairOver: MCDONALD CREEK
2.0 MI N ILL 173, Winnebago, IL
Built 2002 Load: 45.4 t ADT: 24,200
ILL 251 NB
FairOver: MCDONALD CREEK
2.0 MI N ILL 173, Winnebago, IL
Built 2002 Load: 45.4 t ADT: 24,200
TR-484
FairOver: Branch of McKee Crk
7 MI E LIBERTY, Adams, IL
Built 2005 Load: 45.7 t ADT: 75
FAP-327 (US-50)
FairOver: Canadian National RR
CLAY-MARION CO LINE, Clay, IL
Built 1996 Load: 45.7 t ADT: 2,750
FAP 327 (US 50)
FairOver: LITTLE MUDDY CREEK
.75 MI W RICHLAND CL, Clay, IL
Built 2017 Load: 45.7 t ADT: 4,000
MARGARET(THORN-LAN
FairOver: THORN CREEK
1.5 M W IL 394, Cook, IL
Built 1969 Load: 45.7 t ADT: 10,250
US 51 (SB)(FAP 322
FairOver: TRIB LONG POINT CR
1.75 MI N OF WAPELLA, De Witt, IL
Built 1986 Load: 45.7 t ADT: 9,650
CH 60 / N Thorndal
FairOver: Salt Creek
1.6 MI E I-290, DuPage, IL
Built 2009 Load: 45.7 t ADT: 2,800
IL 1 US 150(FAP 33
FairOver: PARIS LAKE
N EDGE OF PARIS, Edgar, IL
Built 1979 Load: 45.7 t ADT: 6,050
FAI-70
FairOver: STREAM
1 MI W BROWNSTOWN IN, Fayette, IL
Built 1948 Load: 45.7 t ADT: 22,700
FAP-777 (ILL-185)
FairOver: VANDALIA LAKE
3 MI NW VANDALIA, Fayette, IL
Built 1966 Load: 45.7 t ADT: 2,550
ILL 96
FairOver: CAMP CREEK
1 MI E. DALLAS CITY, Henderson, IL
Built 1992 Load: 45.7 t ADT: 1,500
FAS 705(IL 49)
FairOver: HICKORY CRK
WILLOW HILL, Jasper, IL
Built 2001 Load: 45.7 t ADT: 1,150
IL 38
FairOver: RR - UP
2.9 M W OF IL 47, Kane, IL
Built 1964 Load: 45.7 t ADT: 8,650
IL 25
FairOver: RR - UP
0.5 M S OF IL 38, Kane, IL
Built 1965 Load: 45.7 t ADT: 6,550
I-57 NB
FairOver: KANKAKEE RIVER
2.9 M N of 45 & 52, Kankakee, IL
Built 2016 Load: 45.7 t ADT: 11,650
TR 9
FairOver: BULL CR
3.5 MI N SHURBURNVL, Kankakee, IL
Built 1979 Load: 45.7 t ADT: 250
HALF DAY RD
FairOver: E BR SKOKIE DITCH
0.20 M E OF US 41, Lake, IL
Built 1968 Load: 45.7 t ADT: 9,450
FAP 781 (IL 33)
FairOver: STREAM
1.5 MI S CRAW CO LIN, Lawrence, IL
Built 2015 Load: 45.7 t ADT: 675
IL 2 WB
FairOver: LITTLE CREEK
W SAUK VAL. COLLEGE, Lee, IL
Built 2010 Load: 45.7 t ADT: 11,000
CH 35 NELSON RD
FairOver: 3 MILE BRANCH
1.0 MI S OF NELSON, Lee, IL
Built 1961 Load: 45.7 t ADT: 575
US 136
FairOver: SUGAR CREEK
1.2M E ARMINGTON RD, Logan, IL
Built 1937 Load: 45.7 t ADT: 2,200
Showing 12,901-12,950 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.