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
ILL 163
FairOver: CANAL NO 1LEVEE DIST
0.17 MI SE ILL 157, St. Clair, IL
Built 1975 Load: 41.5 t ADT: 3,350
I-255 RAMP E
FairOver: BLUE WATERS DITCH
0.50 MI S DORIS AVE, St. Clair, IL
Built 1980 Load: 41.5 t ADT: 2,800
WEIGAND RD - TR 31
FairOver: ALLOWAY CREEK
NE COR-4-T25NR2W, Tazewell, IL
Built 1969 Load: 41.5 t ADT: 50
TR 34 B
FairOver: DITCH
1 MI N OF FITHIAN, Vermilion, IL
Built 1938 Load: 41.5 t ADT: 25
FAP 840(IL 49)
FairOver: MIDDLE FORK RIVER
.25 MI S OF US 136, Vermilion, IL
Built 1993 Load: 41.5 t ADT: 1,150
ILL 15
FairOver: Beaucoup Creek
3.8 MI W JCT U S 51, Washington, IL
Built 1921 Load: 41.5 t ADT: 2,050
ILL 15
FairOver: BLACK CREEK
2.3mi W of US 51 W Jct, Washington, IL
Built 1921 Load: 41.5 t ADT: 2,050
TR-533
FairOver: SKILLET FORK
1 MI E WAYNE CITY, Wayne, IL
Built 1979 Load: 41.5 t ADT: 100
NEWBURG RD
FairOver: MANNING CREEK
0.2 W OF COUNTY LINE, Winnebago, IL
Built 1974 Load: 41.5 t ADT: 8,000
ILL 89
FairOver: RICHLAND CREEK
5.35 MI N OF ILL 116, Woodford, IL
Built 1983 Load: 41.5 t ADT: 3,550
I 39/US 51
FairOver: UNNAMED STREAM
3.25 M S US 24, Woodford, IL
Built 1992 Load: 41.5 t ADT: 18,700
TWP RD 106
FairOver: EAST FORK SANDY CK
3 MILE NW TAMMS, Alexander, IL
Built 1974 Load: 41.8 t ADT: 25
TR-281
FairOver: Brush Creek Branch
4 MI W OF DEPUE, Bureau, IL
Built 1985 Load: 41.8 t ADT: 150
IL 78
FairOver: EAST JOHNSON CREEK
4 MI. S. MT CARROLL, Carroll, IL
Built 1996 Load: 41.8 t ADT: 1,550
ILL 104
FairOver: LAKE SANGCHRIS
.75 MI W BULPITT, Christian, IL
Built 1965 Load: 41.8 t ADT: 3,300
CH-1 (FAS-645)
FairOver: S FORK SANGAMON RIV
5.5 Mi S Taylorville, Christian, IL
Built 1957 Load: 41.8 t ADT: 2,150
IL 53
FairOver: SALT CREEK
0.1 M N CENTRAL, Cook, IL
Built 1962 Load: 41.8 t ADT: 66,400
I- 55 WB RMP IL171
FairOver: DES PLAINES RIVER
1.3 M SW IL 43, Cook, IL
Built 1963 Load: 41.8 t ADT: 5,300
DIXIE HWY
FairOver: CAL UNION DITCH
0.33 M S US 6, Cook, IL
Built 2002 Load: 41.8 t ADT: 11,800
ROY AVE
FairOver: ADDISON CR
0.1 MI N NORTH AVE, Cook, IL
Built 1966 Load: 41.8 t ADT: 1,050
FAP 828
FairOver: BRUSH CREEK
1.5 MI S IL 121, Cumberland, IL
Built 1981 Load: 41.8 t ADT: 2,450
TR 7 B
FairOver: CLEAR CREEK
.25 MI E OF TRILLA, Cumberland, IL
Built 1969 Load: 41.8 t ADT: 350
IL 59
FairOver: KRESS CREEK
0.7 M S OF IL 38, DuPage, IL
Built 1931 Load: 41.8 t ADT: 25,300
IL 59
FairOver: ABANDONED RR
0.66 M S OF IL 64, DuPage, IL
Built 1975 Load: 41.8 t ADT: 26,900
I-355
FairOver: BN RR
1M.E.OF IL-53, DuPage, IL
Built 1989 Load: 41.8 t ADT: 145,100
FAS-1710 (US-40)
FairOver: L WABASH RV OVERFLOW
1.8 MI W EFFINGHAM, Effingham, IL
Built 1978 Load: 41.8 t ADT: 5,950
ILL 116
FairOver: KELLY CREEK
1.14 M E OF ILL 115, Ford, IL
Built 1972 Load: 41.8 t ADT: 775
TR 266
FairOver: TURKEY CREEK
3.9 MI NW ATHENSVILE, Greene, IL
Built 1980 Load: 41.8 t ADT: 10
FAI 80 SB
FairOver: ROCK RIVER
AT ROCK ISLAND CO LN, Henry, IL
Built 1965 Load: 41.8 t ADT: 11,250
FAI 80 NB
FairOver: ROCK RIVER
AT ROCK ISLAND CO LN, Henry, IL
Built 1965 Load: 41.8 t ADT: 11,250
IL 1/FAP 332A
FairOver: SUGAR CREEK
S EDGE OF MILFORD, Iroquois, IL
Built 1937 Load: 41.8 t ADT: 2,200
TR 369A
FairOver: PIGEON CR
1.5MI E CH 46, Iroquois, IL
Built 1975 Load: 41.8 t ADT: 50
FAP-821 (ILL-15)I
FairOver: CNIC RR
.2 MI W BLUFORD RD, Jefferson, IL
Built 1995 Load: 41.8 t ADT: 3,500
I 64
FairOver: BR AUXIER CREEK
1.5 MI W BELL RIVE I, Jefferson, IL
Built 1974 Load: 41.8 t ADT: 12,700
US 6
FairOver: PECUMSAGAN CR
5.0 MI E OF ILL 251, LaSalle, IL
Built 1954 Load: 41.8 t ADT: 7,150
FAP 322(NB)(US 51)
FairOver: SANGAMON RIVER
1 MI S HARRISTOWN, Macon, IL
Built 1976 Load: 41.8 t ADT: 5,900
FAP 322(SB)(US 51)
FairOver: SANGAMON RIVER
1 MI S HARRISTOWN, Macon, IL
Built 1976 Load: 41.8 t ADT: 5,900
FAU-7352 CH-20
FairOver: Stream
1.4 MI W FORSYTH, Macon, IL
Built 2010 Load: 41.8 t ADT: 1,400
FAI 255NB
FairOver: CAHOKIA CANAL
.9MI SO ILL 162, Madison, IL
Built 1985 Load: 41.8 t ADT: 20,150
FAI 255 SB
FairOver: CAHOKIA CANAL
.9MI SO ILL 162, Madison, IL
Built 1985 Load: 41.8 t ADT: 20,150
US 45
FairOver: TUCKER DITCH
3.5 MI S JOHNSON CO, Massac, IL
Built 1951 Load: 41.8 t ADT: 1,950
I-24 RAMP 259
FairOver: NEW COLUMBIA DITCH
NEW COLUMBIA INTERCH, Massac, IL
Built 1978 Load: 41.8 t ADT: 250
GREEENWOOD RD
FairOver: NIPPERSINK CREEK
2.5 MI N IL 120, McHenry, IL
Built 1993 Load: 41.8 t ADT: 3,850
I-55 BUSN LP NB &
FairOver: SUGAR CR & BIKE PATH
1.1 MI N OF ILL 9, McLean, IL
Built 2000 Load: 41.8 t ADT: 41,100
FAS 211-CH 8
FairOver: ELIZA CREEK
SE-21-T15NR5W, Mercer, IL
Built 1961 Load: 41.8 t ADT: 100
TR 244
FairOver: HENDERSON CREEK
CTR-18-T13NR1W, Mercer, IL
Built 1965 Load: 41.8 t ADT: 25
I-55 and FR's
FairOver: SHOP CREEK
.48 Mi N IL 108, Montgomery, IL
Built 1943 Load: 41.8 t ADT: 26,800
I-39 & US 51 NB
FairOver: KILBUCK CREEK
3 MI N OF ILL 64, Ogle, IL
Built 1981 Load: 41.8 t ADT: 16,100
ILL 8
FairOver: KICKAPOO CREEK
.5 MI W OF EDWARDS, Peoria, IL
Built 2015 Load: 41.8 t ADT: 2,800
ILL. RTE. 127
FairOver: SWANWICK CREEK
4.25M S WASH CO LINE, Perry, IL
Built 1976 Load: 41.8 t ADT: 3,500
Showing 12,351-12,400 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.