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 1451 - CH 27
FairOver: TIBER CREEK
NE-13-T7NR5E, Fulton, IL
Built 1993 Load: 36.0 t ADT: 700
ILL 1 FAP 782
FairOver: SALINE RV
2.5 MI S OF ILL 13, Gallatin, IL
Built 1979 Load: 36.0 t ADT: 1,850
TR-11
FairOver: BUCKS BRANCH
4 MI NW PATTERSON, Greene, IL
Built 1982 Load: 36.0 t ADT: 50
FAS-288 (CH-18)
FairOver: Claypool Drain Ditch
0.5 Mi N Coal City, Grundy, IL
Built 2013 Load: 36.0 t ADT: 1,400
BENNETT RD TR-22
FairOver: HOG RUN
0.18 MI N. FARMER RD, Grundy, IL
Built 1990 Load: 36.0 t ADT: 50
IL 96
FairOver: GRAY BAY
2.5M N US136,HAMILTN, Hancock, IL
Built 1981 Load: 36.0 t ADT: 1,100
TR 356
FairOver: LITTLE LINDA CREEK
2.8 M N OF ST MARY, Hancock, IL
Built 1978 Load: 36.0 t ADT: 100
TR 180
FairOver: GROVE CREEK
3.4 NW BURNSIDE, Hancock, IL
Built 1979 Load: 36.0 t ADT: 50
ILL 1
FairOver: BR OF ROCK CR
3.6 MI S GALLATIN CO, Hardin, IL
Built 1935 Load: 36.0 t ADT: 1,100
US 34
FairOver: BNSF RR (079194E)
0.75 MI E MISS RIV, Henderson, IL
Built 1970 Load: 36.0 t ADT: 10,200
TR 196
FairOver: STREAM
NW-14-T8NR4W, Henderson, IL
Built 1922 Load: 36.0 t ADT: 125
TR 251C
FairOver: SHAVETAIL CREEK
1M E OF ILL 49, Iroquois, IL
Built 1973 Load: 36.0 t ADT: 500
CH 42
FairOver: TRIB SPRING CREEK
2.7MI N US24, Iroquois, IL
Built 1954 Load: 36.0 t ADT: 75
TR 363
FairOver: PIGEON CR
.2MI E ILL 49, Iroquois, IL
Built 1965 Load: 36.0 t ADT: 100
IL 149
FairOver: LITTLE MUDDY RIVER
2 MI E OF DESOTO, Jackson, IL
Built 1986 Load: 36.0 t ADT: 3,000
ILL 37
FairOver: ABANDONED RR
0.2 MI S CYPRESS, Johnson, IL
Built 1934 Load: 36.0 t ADT: 1,200
IL 31
FairOver: TYLER CREEK
0.3 M S OF I-90, Kane, IL
Built 1958 Load: 36.0 t ADT: 21,000
IL 64
FairOver: FOX RIVER
0.2 M W OF IL 25, Kane, IL
Built 1997 Load: 36.0 t ADT: 28,300
KESLINGER RD
FairOver: MILL CREEK
0.9 MI W OF PECK RD, Kane, IL
Built 1997 Load: 36.0 t ADT: 5,800
CAMP DEAN ROAD
FairOver: WELCH CREEK
.2 MI.S OFGRANART RD, Kane, IL
Built 1982 Load: 36.0 t ADT: 450
IL 1
FairOver: DITCH
4.0 MI S. OF IL 17, Kankakee, IL
Built 1995 Load: 36.0 t ADT: 4,450
ILL 50
FairOver: SO. BR. ROCK CR.
S. EDGE OF MANTENO, Kankakee, IL
Built 1997 Load: 36.0 t ADT: 9,000
CH 1 / Fox River D
FairOver: BIG ROCK CREEK
1.5 MI S RTE 34, Kendall, IL
Built 2008 Load: 36.0 t ADT: 4,450
I-39/US 51
FairOver: CONVEYOR BELT/PVT RD
0.43 MI S OF US 6, LaSalle, IL
Built 1985 Load: 36.0 t ADT: 19,400
CO RD 42
FairOver: BUCK CREEK
E 15TH,N 3400, LaSalle, IL
Built 1934 Load: 36.0 t ADT: 450
CH 42-TERRA COTTA
FairOver: STREAM
2912 E15, LaSalle, IL
Built 1994 Load: 36.0 t ADT: 375
TR 36
FairOver: SCATTERING POINT
1785 N, 700 E, Livingston, IL
Built 1959 Load: 36.0 t ADT: 25
TR 244
FairOver: DRAINAGE DITCH
3045 N, 2900 E, Livingston, IL
Built 1964 Load: 36.0 t ADT: 50
IL 48(FAU 7429)
FairOver: SANGAMON RIVER
0.5 MI N. OF ILL-105, Macon, IL
Built 1929 Load: 36.0 t ADT: 8,850
FAS 542 (SBI 2)
FairOver: LAKE FORK CREEK
.5 MI N OF MAROA, Macon, IL
Built 1980 Load: 36.0 t ADT: 675
TR 15A(MILLER RD)
FairOver: STREAM
1.5 MI NE ARGENTA, Macon, IL
Built 1984 Load: 36.0 t ADT: 75
FAU 7354(PERSHING
FairOver: SPRING CREEK
0.8 MI S BEARSDALE, Macon, IL
Built 2004 Load: 36.0 t ADT: 1,000
BUNKER-HILCARLNVL-
FairOver: DRY FORK
9MI-S-CARLINVILLE, Macoupin, IL
Built 1981 Load: 36.0 t ADT: 600
FAI 70 EB
FairOver: MINIER SLOUGH
1.9 M W ILL 4, Madison, IL
Built 1964 Load: 36.0 t ADT: 15,300
FAI 70 WB
FairOver: MINIER SLOUGH
1.9 M W ILL 4, Madison, IL
Built 1964 Load: 36.0 t ADT: 15,300
ILL 4
FairOver: W Trib to Silver Crk
500' N of IL 140, Madison, IL
Built 1936 Load: 36.0 t ADT: 3,800
US 51
FairOver: ICRR,ATKRR
3.9 mi N IL 161 Centralia, Marion, IL
Built 1983 Load: 36.0 t ADT: 4,050
US 67
FairOver: TOWN CREEK FORK
.1 MI S OF ILL 9, McDonough, IL
Built 1988 Load: 36.0 t ADT: 6,350
ILL 9
FairOver: TOWN FORK CREEK
.75 MI W OF US 67, McDonough, IL
Built 1986 Load: 36.0 t ADT: 1,550
HIGHBRIDGE RD
FairOver: S BR KISHWAUKEE RIV
0.7 MI N OF UNION, McHenry, IL
Built 1992 Load: 36.0 t ADT: 650
IL 251 FAS 255
FairOver: MACKINAW RIVER
5.5 M S OF US 24, McLean, IL
Built 1991 Load: 36.0 t ADT: 2,150
FAS481CH32
FairOver: BRANCH SUGAR CK
2.5 MI ESE STANFORD, McLean, IL
Built 1994 Load: 36.0 t ADT: 900
ILL 97
FairOver: SANGAMON RIVER
MASON MENARD CO LINE, Menard, IL
Built 1938 Load: 36.0 t ADT: 1,750
ILL 159
FairOver: PRAIRIE DU LONG CRK
3 M S HECKER, Monroe, IL
Built 1928 Load: 36.0 t ADT: 4,500
ILL 156
FairOver: BOND CREEK
0.9MI E VALMEYER, Monroe, IL
Built 1990 Load: 36.0 t ADT: 1,650
CH 18/FAS 617
FairOver: APPLE CREEK
3MI SW WAVERLY, Morgan, IL
Built 1988 Load: 36.0 t ADT: 250
FAP 758(IL 32)
FairOver: JONATHAN BRANCH
1.3 MI S LOVINGTON, Moultrie, IL
Built 1975 Load: 36.0 t ADT: 1,350
ILL 64
FairOver: DRAINAGE DITCH
3.0 MI E JCT ILL 2, Ogle, IL
Built 1933 Load: 36.0 t ADT: 3,900
ILL 8
FairOver: TRIB OF KICKAPOO CR
1.5 MI SE OF EDWARDS, Peoria, IL
Built 1928 Load: 36.0 t ADT: 2,550
ILL 8
FairOver: TRIB OF KICKAPOO CR
3.5 MI NW POTTSTOWN, Peoria, IL
Built 1991 Load: 36.0 t ADT: 2,550
Showing 11,051-11,100 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.