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
FAI 270 EB
UnknownOver: FAI 55
JCT I-55/70/270 "3I", Madison, IL
Built 1964 ADT: 33,200
FAI 270 WB
UnknownOver: FAI 55
JCT I-55/70/270 "3I", Madison, IL
Built 1964 ADT: 33,200
FAI 270 EB
UnknownOver: FAI 70 WB RAMP
JCT FAI 55,70,270, Madison, IL
Built 1965 ADT: 46,100
OR-5 ChainOfRocksR
UnknownOver: Chain of Rocks Cn & 2 LR
1.3 M E MISS R, Madison, IL
Built 1949 ADT: 25
IL 140
UnknownOver: I-55
Hamel, Madison, IL
Built 1956 ADT: 31,500
US 40
UnknownOver: FAI 70
2.2 MI E GRNT FRK RD, Madison, IL
Built 1964 ADT: 26,900
BLACK LANE ramp
UnknownOver: FAI 70
2.15 MI WEST OF 157, Madison, IL
Built 1960 ADT: 49,900
ILL 157 SB
UnknownOver: FAI 270
1.5 MI N PETERS STA, Madison, IL
Built 1963 ADT: 38,500
ILL 157 NB
UnknownOver: FAI 270
1.5 MI N PETERS STA, Madison, IL
Built 1963 ADT: 38,500
ILL 4
UnknownOver: FAI 55
0.5 MI E WORDEN, Madison, IL
Built 1955 ADT: 30,700
ILL 4
UnknownOver: FAI 70
1.75 M S OF 143 & 4, Madison, IL
Built 1964 ADT: 27,500
IL 111 - HOMER ADA
UnknownOver: US 67
1 M E JCT 111, Madison, IL
Built 1958 ADT: 9,600
ICG RR
UnknownOver: ILL 111
1.5 M N JCT 140-111, Madison, IL
Built 1959 ADT: 19,500
IL 111/3-HOMER ADA
UnknownOver: ROGERS AV & BLOOMER
1 M N JCT 140 & 111, Madison, IL
Built 1958 ADT: 1,050
IL 111
UnknownOver: Access Rd, NSRR
1.25 M N 270, Madison, IL
Built 1940 ADT: 300
ILL 160
UnknownOver: FAI 70
2.2 M W PIERRON EXIT, Madison, IL
Built 1963 ADT: 23,600
SAND PRAIRIE ROAD
UnknownOver: I-55/70
1.5 MI E OF ILL 111, Madison, IL
Built 1961 ADT: 53,600
ILL 143
UnknownOver: FAI-55
2M E EDWARDSVILLE, Madison, IL
Built 1956 ADT: 30,100
ILL 143
UnknownOver: FAI 70
1.9 M E MARINE, Madison, IL
Built 1964 ADT: 23,600
PENN CENTRAL RR
UnknownOver: ILL 160
E OF HIGHLAND, Madison, IL
Built 1927 ADT: 1,700
Old Alton Edwrdsvl
UnknownOver: SIU North Access Rd
OLD 159 1.5 M W EDWR, Madison, IL
Built 1968 ADT: 5,550
FAS 775 (MARINE RD
UnknownOver: FAI 70
1.25 M E RTE 4, Madison, IL
Built 1962 ADT: 27,500
FAIRMONT LANE
UnknownOver: FAI 55/70/US 40
1.86 MI W OF IL 157, Madison, IL
Built 1960 ADT: 49,900
SAND ROAD/ CITY ST
UnknownOver: I-270
0.4 mi W of IL 157, Madison, IL
Built 1963 ADT: 49,800
PLEASNT RDG/FAU 91
UnknownOver: I-55/70
0.7 M W ILL 159, Madison, IL
Built 1959 ADT: 46,000
TR 208 (RIGGIN RD)
UnknownOver: FAI 70
.8MI E FAI 55,70,270, Madison, IL
Built 1965 ADT: 30,600
OLD STAUNTN RD-TR2
UnknownOver: FAI 70
2.7 M W JCT 4, Madison, IL
Built 1965 ADT: 30,600
OAK LAWN RD-MSS 90
UnknownOver: I-270
0.26 ME JCT 159, Madison, IL
Built 1964 ADT: 30,200
PRAIRIE RD - TR 33
UnknownOver: FAI 70
2.2 M E JCT 143, Madison, IL
Built 1963 ADT: 23,600
TR277-MAPLE GROVE
UnknownOver: FAI 55
1/2 MI N I-270, Madison, IL
Built 1966 ADT: 33,200
TR 251-A(GOSHEN RD
UnknownOver: FAI 55
2 M N JCT 270, Madison, IL
Built 1966 ADT: 33,200
FAS 766 (FRUIT RD)
UnknownOver: FAI 55
2 M N JCT 143 & 55, Madison, IL
Built 1966 ADT: 30,100
TR 177 (MAPLE RD)
UnknownOver: FAI 55
2 M S JCT 140, Madison, IL
Built 1966 ADT: 30,100
TR 246 (CHURCH RD)
UnknownOver: FAI 55/I-55 FR 11.45
2 M N JCT 140, Madison, IL
Built 1966 ADT: 1,450
CH 21 (STAUNTON RD
UnknownOver: FAI 70
1.8 M E FAI 55, Madison, IL
Built 1965 ADT: 30,600
Main St
UnknownOver: FAI 270
1 M W JCT 159, Madison, IL
Built 1963 ADT: 38,500
Meridian Rd
UnknownOver: FAI 270
1.25 MI E OF IL 157, Madison, IL
Built 1963 ADT: 38,500
ILL 143 WB
UnknownOver: N ENTRANCE TO SIUE
1.3 MI W ILL 159, Madison, IL
Built 1968 ADT: 1,550
ILL 143 EB
UnknownOver: N ENTRANCE TO SIUE
1.3 MI W ILL 159, Madison, IL
Built 1968 ADT: 5,550
ALHAMBRA RD (FAS77
UnknownOver: I-55 & E FRONTAGE RD
0.3 MI SE LIVINGSTON, Madison, IL
Built 1973 ADT: 575
FAS777-LVNGSTN-ND
UnknownOver: FAI 55
AT LIVINGSTON, Madison, IL
Built 1974 ADT: 28,800
UPRR
UnknownOver: IL 140 COLLEGE AVE
0.3 mi W of IL 3, Madison, IL
Built 1978 ADT: 10,150
I 255 "RAMP 006"
UnknownOver: FAI 55,70;US 40
1.4MI W OF ILL 157, Madison, IL
Built 1986 ADT: 49,900
FAI 255 NB
UnknownOver: I-55/70
And over Ramps 5+6, Madison, IL
Built 1986 ADT: 55,300
FAI 255 SB
UnknownOver: I-55/70
And over Ramps 5+6, Madison, IL
Built 1986 ADT: 55,300
IL 4
UnknownOver: US 40, CSXRR
3.2 mi S of I-70, Madison, IL
Built 1980 ADT: 8,450
FAI 255/RDWAY"B"
UnknownOver: FAI 55/70
1.35MI W OF ILL 157, Madison, IL
Built 1986 ADT: 49,900
IL3 HOMER ADAMS PK
UnknownOver: ILL 140
.4MI W FOSTERBERG RD, Madison, IL
Built 1985 ADT: 18,300
FAI 255 NB
UnknownOver: RP 1/RDWY B
N OF FAI 55,70;US 40, Madison, IL
Built 1987 ADT: 6,700
TR 110-Fairmont Av
UnknownOver: FAI 255
1.2MI N FAI 55,70, Madison, IL
Built 1986 ADT: 40,200
Showing 2,651-2,700 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 |