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
TR 252
FairOver: SUGAR CREEK
3.4 MI N.W. ATLANTA, Logan, IL
Built 1989 Load: 38.9 t ADT: 20
IL 48(FAP 714)
FairOver: MOSQUITO CREEK
1.5 MI NE BLUE MOUND, Macon, IL
Built 1929 Load: 38.9 t ADT: 4,500
I-72 (EB)
FairOver: FRIENDS CREEK
1 MI E OF ARGENTA, Macon, IL
Built 1975 Load: 38.9 t ADT: 5,950
I-72 (WB)
FairOver: FRIENDS CREEK
1 MI E OF ARGENTA, Macon, IL
Built 1975 Load: 38.9 t ADT: 5,950
SHIPMAN BLACKTOP
FairOver: MACOUPIN CREEK
7.7MI N JCT 16, Macoupin, IL
Built 1990 Load: 38.9 t ADT: 1,550
FAI-55,RAMPS,&FR R
FairOver: TRIB TO SILVER CREEK
N OF NEW DOUGLAS RD, Madison, IL
Built 1970 Load: 38.9 t ADT: 28,800
LOW. MARINE RD/TR2
FairOver: SILVER CK.
3 MI. NE TROY, Madison, IL
Built 1991 Load: 38.9 t ADT: 475
US 51 (FAP 322)
FairOver: North TURKEY CREEK
E OF JUNCTION CITY, Marion, IL
Built 1982 Load: 38.9 t ADT: 4,050
CH-33
FairOver: TURKEY CREEK
1 MI S ODIN, Marion, IL
Built 1987 Load: 38.9 t ADT: 375
FAS 2937-ILL 169
FairOver: PATTERSON BRANCH
2.7 MI E PULASKI CO, Massac, IL
Built 1988 Load: 38.9 t ADT: 1,300
TR 65-KOMMER RD
FairOver: TRIB TO MASSAC CREEK
0.5 MI N FAS 959, Massac, IL
Built 1997 Load: 38.9 t ADT: 25
TR 133-UNITY SCH R
FairOver: UNNAMED STREAM
0.5 MI E CH 8, Massac, IL
Built 2001 Load: 38.9 t ADT: 650
IL 47
FairOver: SILVER CREEK
9.0 S OF STATE LINE, McHenry, IL
Built 1985 Load: 38.9 t ADT: 4,500
COUNTY LINE ROAD
FairOver: KISHWAUKEE RIVER
.4MI N OF US 20, McHenry, IL
Built 2016 Load: 38.9 t ADT: 475
FAS 573
FairOver: GROVE CREEK
0.1 MI E GREENVIEW, Menard, IL
Built 1929 Load: 38.9 t ADT: 450
US 67
FairOver: TOMS CREEK
025 MI N ALEXIS WYE, Mercer, IL
Built 1999 Load: 38.9 t ADT: 2,400
IL 156
FairOver: FOUNTAIN CREEK
3.7 M E VALMEYER, Monroe, IL
Built 1927 Load: 38.9 t ADT: 3,350
ILL 2
FairOver: GALE CREEK
1 MI S. OREGON, Ogle, IL
Built 1990 Load: 38.9 t ADT: 4,000
IL 2
FairOver: GALE CREEK
1.1 MI S. OREGON, Ogle, IL
Built 1990 Load: 38.9 t ADT: 4,000
ILL 2
FairOver: MOSQUITO CREEK
5 MI. N. OF BYRON, Ogle, IL
Built 1996 Load: 38.9 t ADT: 6,300
COUNTY LINE RD-TR
FairOver: PRINCE RUN CREEK
N.CTR-1-T11NR6E, Peoria, IL
Built 1975 Load: 38.9 t ADT: 50
IL 106
FairOver: BEEBE CREEK
2.5MI NE KINDERHOOK, Pike, IL
Built 1988 Load: 38.9 t ADT: 1,300
I-72
FairOver: DRAINAGE DITCH
1.41M E I-172, Pike, IL
Built 1986 Load: 38.9 t ADT: 9,400
IL 89
FairOver: UNNAMED STREAM
1.65 MILE S OF US 6, Putnam, IL
Built 2001 Load: 38.9 t ADT: 5,450
ILL 34
FairOver: STREAM
0.2 MI N POPE COUNTY, Saline, IL
Built 1923 Load: 38.9 t ADT: 1,650
IL 29 (SB)
FairOver: SUGAR CREEK
.7M SE I-55 INTCHG, Sangamon, IL
Built 1963 Load: 38.9 t ADT: 16,700
I-72 / US 36 (WB)
FairOver: CLEAR CREEK
2.1M E BUFFALO INTCH, Sangamon, IL
Built 1975 Load: 38.9 t ADT: 7,150
I-72 / US 36 (EB)
FairOver: CLEAR CREEK
2.1M E BUFFALO INTCH, Sangamon, IL
Built 1975 Load: 38.9 t ADT: 7,150
STATE ST/ FAU 9182
FairOver: HARDING DITCH
.5 M.S FAU9166/US50, St. Clair, IL
Built 1981 Load: 38.9 t ADT: 5,950
ILL 40
FairOver: SILVER CREEK
3.5 MI N OF BRADFORD, Stark, IL
Built 1993 Load: 38.9 t ADT: 1,050
ILL 40
FairOver: FOX CREEK
3 MI N OF BRADFORD, Stark, IL
Built 1993 Load: 38.9 t ADT: 1,050
TR 13 A
FairOver: DITCH
1 MI S HOOPESTON, Vermilion, IL
Built 1975 Load: 38.9 t ADT: 200
BACK BONE RD(FAS 5
FairOver: VERMILION RIVER
2.0 MI SE DANVILLE, Vermilion, IL
Built 1975 Load: 38.9 t ADT: 775
FAP-825 (ILL-15)
FairOver: TRIB COFFEE CREEK
2.5 MI W MT CARMEL, Wabash, IL
Built 1974 Load: 38.9 t ADT: 3,850
FAP-823 (ILL-15)
FairOver: LITTLE WABASH RIVER
4.5 MI W EDWARDS C L, Wayne, IL
Built 1923 Load: 38.9 t ADT: 2,750
US 6
FairOver: DU PAGE RIVER
1.8 M W OF I-55, Will, IL
Built 1940 Load: 38.9 t ADT: 17,100
US 30
FairOver: W NORMAN DRAIN.DITCH
6.9 M S OF US 34, Will, IL
Built 1990 Load: 38.9 t ADT: 13,500
STATE ST
FairOver: KISHWAUKEE RIVER
IN CHERRY VALLEY, Winnebago, IL
Built 1926 Load: 38.9 t ADT: 4,350
IL 251 (FAP 734)
FairOver: UP RR
KISHWAUKEE ST-RKFORD, Winnebago, IL
Built 1991 Load: 38.9 t ADT: 15,800
IL 70
FairOver: PECATONICA RIVER
5 MI S. OF DURAND, Winnebago, IL
Built 1996 Load: 38.9 t ADT: 3,500
ILL 70
FairOver: TRIB PECATONICA RIV
.4 MI E OF JUDD RD, Winnebago, IL
Built 1982 Load: 38.9 t ADT: 3,000
MONTAGUE RD
FairOver: ROCK CREEK
0.2 M W MERIDIAN RD, Winnebago, IL
Built 1981 Load: 38.9 t ADT: 3,300
WHITMAN ST
FairOver: ROCK RIVER
0.03 MI W OF N MAIN, Winnebago, IL
Built 1960 Load: 38.9 t ADT: 19,400
ILL 116
FairOver: WEST BR PANTHER CR
4.36 MI E OF ILL 117, Woodford, IL
Built 1984 Load: 38.9 t ADT: 2,900
TR 123A
FairOver: BLACK CREEK
W SIDE OLIVE BRANCH, Alexander, IL
Built 1997 Load: 39.2 t ADT: 100
TR-95
FairOver: PANTHER CREEK
3 MI NE PHILADELPHIA, Cass, IL
Built 1983 Load: 39.2 t ADT: 25
TR 345
FairOver: BEAR CREEK
3.25 MI E HARVEL, Christian, IL
Built 1986 Load: 39.2 t ADT: 20
I- 55 WB STEVENSON
FairOver: RR - BNSF
0.3 M E US 45, Cook, IL
Built 1964 Load: 39.2 t ADT: 61,500
I- 94 EDENS
FairOver: N BR CHICAGO RIVER
0.6 M N FOSTER, Cook, IL
Built 1949 Load: 39.2 t ADT: 145,400
I- 94 SB BISHOP FO
FairOver: LITTLE CAL RIVER
1.3 M N IL 83, Cook, IL
Built 1949 Load: 39.2 t ADT: 83,450
Showing 11,801-11,850 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.