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 2056 CH 27
UnknownOver: I-55
1.5 MI W. OF US 66, Livingston, IL
Built 1972 ADT: 21,800
TR 101
UnknownOver: I-55
4 MI NE OF PONTIAC, Livingston, IL
Built 1974 ADT: 22,300
FAS 348 CH-1
UnknownOver: I-55
0.32 MI.W. OF US 66, Livingston, IL
Built 1972 ADT: 20,900
TR 29
UnknownOver: I-55/OR#66/ICG RR
2 MI S. OF DWIGHT, Livingston, IL
Built 1977 ADT: 20,900
ICG
UnknownOver: TR 99
EAST SIDE/OLD RT 66, Livingston, IL
Built 1900 ADT: 100
AT & SF RR
UnknownOver: ILL RTE 17
1.3 MI W OF ILL 23, Livingston, IL
Built 1939 ADT: 1,700
IL 54
UnknownOver: IL 121 & IC RR
SE EDGE MT. PULASKI, Logan, IL
Built 1971 ADT: 2,850
IC RR
UnknownOver: IL 121
.7M N IL54-MT PULASK, Logan, IL
Built 1940 ADT: 2,850
FAS 566 (CH 10)
UnknownOver: I-55
ELKHART INTERCHANGE, Logan, IL
Built 1974 ADT: 34,900
CH S13
UnknownOver: I-55
BROADWELL INTERCHNGE, Logan, IL
Built 1974 ADT: 31,800
BL 55 (OLD US 66)
UnknownOver: I-55
BL 55 INT-SW LINCOLN, Logan, IL
Built 1973 ADT: 27,500
CH E52
UnknownOver: I-55
.8 S IL10-1.6 W BL55, Logan, IL
Built 1973 ADT: 27,500
I-55 SB
UnknownOver: IL 10 & UP RR
IL 10 INT- W LINCOLN, Logan, IL
Built 1974 ADT: 3,100
I-55 NB
UnknownOver: IL 10 & UP RR
IL 10 INT- W LINCOLN, Logan, IL
Built 1974 ADT: 6,350
I-155 NB
UnknownOver: I-55 SB
I-55/155 NW LINCOLN, Logan, IL
Built 1973 ADT: 21,500
I-155SB TO 55NB RA
UnknownOver: I-155 NB & I-55 SB
I-55/155 NW LINCOLN, Logan, IL
Built 1973 ADT: 10,600
OLD IL 121
UnknownOver: I-55
2.7 N IL10-1 N BL 55, Logan, IL
Built 1973 ADT: 21,500
CH S27
UnknownOver: I-55
3.1 E I155/1 N BL 55, Logan, IL
Built 1973 ADT: 21,500
I-55 SB
UnknownOver: UP RR & BUS 55
BUS55 INT NE LINCOLN, Logan, IL
Built 1974 ADT: 1,800
I-55 NB
UnknownOver: UP RR & BUS 55
BUS55 INT NE LINCOLN, Logan, IL
Built 1974 ADT: 1,800
TR 65A
UnknownOver: I-55/UP RR/W FR RD
LAWNDALE 3.5 N BUS55, Logan, IL
Built 1974 ADT: 23,200
I-55 NB
UnknownOver: RACE STREET
.8M SW ATLANTA INTCH, Logan, IL
Built 1976 ADT: 250
I-55 SB
UnknownOver: RACE STREET
.8M SW ATLANTA INTCH, Logan, IL
Built 1976 ADT: 250
CH 6 (FAS 557)
UnknownOver: I- 55
ATLANTA INTERCHANGE, Logan, IL
Built 1976 ADT: 21,600
TR 87
UnknownOver: FAI 155
.6MI N I-155/I-55, Logan, IL
Built 1986 ADT: 10,600
TR 79
UnknownOver: FAI 155
1.9MI N I-155/I-55, Logan, IL
Built 1986 ADT: 10,600
TR 33
UnknownOver: FAI 155
I-155 INT HARTSBURG, Logan, IL
Built 1988 ADT: 10,600
EMDEN RD
UnknownOver: I-155
1M S IL 136, Logan, IL
Built 1991 ADT: 700
US 136
UnknownOver: I-155
I-155/US 136 INTCHG, Logan, IL
Built 1991 ADT: 11,000
ILL CENT RR
UnknownOver: CH 1
IN S MT PULASKI, Logan, IL
Built 1900 ADT: 600
WALKWAY
UnknownOver: CH 10
0.5 MI E ELKHART, Logan, IL
Built 1915 ADT: 700
CH 12S
UnknownOver: TR 199A
1 MI S ELKHART, Logan, IL
Built 1982 ADT: 600
IC&G RR
UnknownOver: FAU 7706
LINCOLN, Logan, IL
Built 1900 ADT: 4,150
IC&G RR SPUR TRA
UnknownOver: FAU 7716
COLLEGE STREET, Logan, IL
Built 1911 ADT: 550
IC&G RR
UnknownOver: KICKAPOO STRFAU7717
KICKAPOO &GERMAN, Logan, IL
Built 1909 ADT: 1,250
N&S RR
UnknownOver: US 51(FAP 710)
ON MAIN ST DECATUR, Macon, IL
Built 1934 ADT: 10,100
IC RR
UnknownOver: US 51(FAP 710)
S MAIN DECATUR, Macon, IL
Built 1933 ADT: 7,600
US-51 SB (FAP 710)
UnknownOver: IL 105(FAP 712)
IN DECATUR, Macon, IL
Built 1962 ADT: 1,900
US-51NB (FAP 710AL
UnknownOver: IL 105(FAP 712)
IN DECATUR, Macon, IL
Built 1963 ADT: 7,100
IC RR
UnknownOver: US 51(FAP 710)
1 MI S OF DECATUR, Macon, IL
Built 1959 ADT: 9,300
IC RR
UnknownOver: US 51(FAP 710)
IN DECATUR, Macon, IL
Built 1965 ADT: 8,700
US 51(FAP 710 ALT)
UnknownOver: NS RR & CERRO GORDO ST.
IN DECATUR, Macon, IL
Built 1966 ADT: 850
US 36(FAP 320)
UnknownOver: LAKE SHORE DR(U 7390
IN DECATUR, Macon, IL
Built 1954 ADT: 200
IT RR
UnknownOver: IL 121(FAP 320)
N OF GARFIELD-DECATR, Macon, IL
Built 1943 ADT: 15,100
CN RR
UnknownOver: FAP 714 (IL 105)
SWCL OF DECATUR, Macon, IL
Built 1962 ADT: 9,800
IC RR
UnknownOver: PERSHING(FAP 320)
IN DECATUR, Macon, IL
Built 1959 ADT: 18,100
IC RR
UnknownOver: OAKLAND(FAU 7429)
IN DECATUR, Macon, IL
Built 1934 ADT: 14,800
N&S RR
UnknownOver: FAIRVIEW(FAU 7429)
IN DECATUR, Macon, IL
Built 1900 ADT: 9,500
TR 150(GREENSWITCH
UnknownOver: I-72
1.83 MI S FAS 549, Macon, IL
Built 1972 ADT: 12,300
TR 4(ACOM RD)
UnknownOver: I-72
1.5 MI SW NIANTIC, Macon, IL
Built 1976 ADT: 14,500
Showing 2,501-2,550 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |