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
US 45
GoodOver: S FORK SALINE RIVER
1.5 MI NE STONEFORT, Saline, IL
Built 2017 Load: 65.1 t ADT: 2,000
W FLORENCE ROAD
GoodOver: BR OF CRANE GROVE CR
0.2 MI E OF ILL 26, Stephenson, IL
Built 1984 Load: 65.1 t ADT: 50
I-80 EB
GoodOver: SPRING CREEK
1.7 MI E JCT IL 89, Bureau, IL
Built 2010 Load: 65.4 t ADT: 12,200
TR44 (ATKINSON RD)
GoodOver: 3 MILE BRANCH
1 MI S ROCK IS RD, Lee, IL
Built 2020 Load: 65.8 t ADT: 75
IL 143
GoodOver: STREAM
0.5M E US 67 Dscvry, Madison, IL
Built 1994 Load: 65.8 t ADT: 9,300
NB RELOCATED IL 3
GoodOver: LAND BRIDGE
UNDER MLK APPR BRDGE, St. Clair, IL
Built 2015 Load: 65.8 t ADT: 1,800
MADISON ST
GoodOver: DES PLAINES RIVER
1.2 M W IL 43, Cook, IL
Built 2003 Load: 66.1 t ADT: 12,200
IL 111
GoodOver: OTTER CREEK
2.3 M N IL 108, Macoupin, IL
Built 2011 Load: 66.1 t ADT: 1,050
TR-184 EVANS MILL
GoodOver: BR OF HICKORY RUN
WLINENW1/417T10NR7E, Peoria, IL
Built 2021 Load: 66.1 t ADT: 150
IL 75
GoodOver: CREEK
.06MI SW ROCKTON AVE, Winnebago, IL
Built 2010 Load: 66.1 t ADT: 2,250
FAS 686 (CH 6)
GoodOver: ENNIS CREEK
3 MI SW CLARKSVILLE, Clark, IL
Built 1989 Load: 66.4 t ADT: 250
I-88 WB
GoodOver: S BR KISHWAUKEE RIV.
W EDGE OF DEKALB, DeKalb, IL
Built 1974 Load: 66.4 t ADT: 12,000
TR 328
GoodOver: TRIB TO LITTLE MUDDY
1.25 MI S OF FAS 869, Jackson, IL
Built 2011 Load: 66.4 t ADT: 25
COLLINS ROAD
GoodOver: TRIB N BR KISWKE RVR
.25 MI E SULLIVAN RD, McHenry, IL
Built 1968 Load: 66.4 t ADT: 725
TR 166
GoodOver: SWAN CREEK
SE-7-T8NR1W, Warren, IL
Built 1981 Load: 66.4 t ADT: 75
US ROUTE 30
GoodOver: FRENCH CRK. TRIB.
3/4 MI E. MORRISON, Whiteside, IL
Built 2008 Load: 66.4 t ADT: 7,000
CENTRAL AV
GoodOver: TRIB "C" CAL SAG
0.3 M N 147TH ST, Cook, IL
Built 1997 Load: 66.7 t ADT: 5,300
IL 21 (MILWAUKEE)
GoodOver: BULL CREEK
0.5 M N IL 137, Lake, IL
Built 2012 Load: 66.7 t ADT: 22,400
KEAN AVE
GoodOver: MILL CREEK
0.4 M S OF IL 83, Cook, IL
Built 2002 Load: 67.1 t ADT: 225
OLD US 36
GoodOver: LONG POINT SLOUGH
1.8M E CH33,ILLIOPOL, Sangamon, IL
Built 2001 Load: 67.1 t ADT: 650
I72/MACARTHUR RAMP
GoodOver: UPRR
1.3 MI W I-55, Sangamon, IL
Built 2009 Load: 67.1 t ADT: 3,800
TR-100 (Weldon Rd)
GoodOver: S BR OF KENT CRK
2 MI E OF WINNEBAGO, Winnebago, IL
Built 2018 Load: 67.1 t ADT: 800
I-90
GoodOver: STREAM
0.7 MI W MCHENRY CO, Boone, IL
Built 1958 Load: 67.4 t ADT: 27,150
WALNUT AVE.
GoodOver: W BRANCH OF DUPAGE
.6 M S/RTE 19, Cook, IL
Built 1979 Load: 67.4 t ADT: 2,600
WEST BOULEVARD
GoodOver: EAST TRIB TO LOOP CR
200' NW OF IL 161, St. Clair, IL
Built 1966 Load: 67.4 t ADT: 9,650
FAI 57 Ramps H,D &
GoodOver: COPPER SLOUGH
0.2 MI. N. OF FAI 74, Champaign, IL
Built 2023 Load: 67.7 t ADT: 23,000
I-39 US 51
GoodOver: STREAM
1.52 MI S OF CH 54, LaSalle, IL
Built 1989 Load: 67.7 t ADT: 19,400
IL 38
GoodOver: DRAINAGE DITCH
.11MI E DAYSVILLE RD, Lee, IL
Built 2018 Load: 67.7 t ADT: 2,800
IL 251
GoodOver: CREEK
.48MI S OF US 30, Lee, IL
Built 2022 Load: 67.7 t ADT: 800
MOUND RD(FAU 7359)
GoodOver: SPRING CREEK
N SIDE DECATUR, Macon, IL
Built 1964 Load: 67.7 t ADT: 13,700
FAI 72
GoodOver: MAUVAISE TERRE CR BR
0.7MI W OF IL 123, Morgan, IL
Built 1974 Load: 67.7 t ADT: 14,500
ILL 18
GoodOver: DRAINAGE DITCH
1.45 MI E OF ILL 26, Putnam, IL
Built 1979 Load: 67.7 t ADT: 2,100
CH 63
GoodOver: MONEY CREEK
4 MI SW CLARKSVILLE, McLean, IL
Built 2019 Load: 68.0 t ADT: 400
I72/MACARTHUR RAMP
GoodOver: UPRR/RECREATION DR
1.3 MI W I 55, Sangamon, IL
Built 2009 Load: 68.0 t ADT: 3,200
I-88 EB
GoodOver: S BR KISHWAUKEE RIV.
W EDGE OF DEKALB, DeKalb, IL
Built 1974 Load: 68.4 t ADT: 12,000
IL 94
GoodOver: ROCK CREEK
5.7M N US136,CARTHAG, Hancock, IL
Built 2000 Load: 68.4 t ADT: 2,000
IL 161 - FAP 805
GoodOver: Trib Centralia Resvr
2 MI E CENTRALIA, Marion, IL
Built 1974 Load: 68.4 t ADT: 5,150
TR-487
GoodOver: ROCKY BRANCH
3 MI SE BELLE RIVE, Jefferson, IL
Built 1988 Load: 68.7 t ADT: 50
IL 394 NB
GoodOver: PLUM CREEK
9.2 M S OF US 30, Will, IL
Built 1949 Load: 68.7 t ADT: 10,600
FOREST ROAD
GoodOver: LITTLE EAGLE CREEK
8.0 MI W ST RTE 1, Saline, IL
Built 2021 Load: 69.0 t ADT: 175
US 52
GoodOver: Little Vermillion River
3.10 M. E. of IL 251, LaSalle, IL
Built 2019 Load: 69.3 t ADT: 1,350
HARCO RD
GoodOver: M FORK SALINE RIVER
1 M S OF IL 34, Saline, IL
Built 2013 Load: 69.3 t ADT: 1,400
IL 125
GoodOver: LOST CREEK
BLUFF SPRG/5M E US67, Cass, IL
Built 2001 Load: 69.7 t ADT: 3,900
SUNSET ROAD
GoodOver: CHANNEL
.27M E OF LAKE AV, Lake, IL
Built 2003 Load: 69.7 t ADT: 100
NORTH ALPINE
GoodOver: BRANCH OF KEITH CRK
.5 MI N OF STATE ST, Winnebago, IL
Built 2018 Load: 69.7 t ADT: 19,000
US 34 FAP 587
GoodOver: PIKE CREEK
1 MI NE OF LAMOILLE, Bureau, IL
Built 2012 Load: 70.0 t ADT: 1,350
I 64
GoodOver: STREAM
1 MI E S TRI-LEVEL, Jefferson, IL
Built 1968 Load: 70.0 t ADT: 14,400
SILVER GLEN RD
GoodOver: VIRGIL DITCH NO 2
0.6 MI E ILL 47, Kane, IL
Built 2020 Load: 70.3 t ADT: 700
ILL 153
GoodOver: SOUTH FORK MUD CREEK
1.0 M NORTH CO LINE, Washington, IL
Built 1994 Load: 70.3 t ADT: 1,250
IL 26
GoodOver: Big Bureau Creek
1.65 M N of I-80, Bureau, IL
Built 2018 Load: 70.6 t ADT: 3,250
Showing 25,301-25,350 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.