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
E SOUTH WATER ST
UnknownOver: GARLAND COURT
350 N & 50 E, Cook, IL
Built 1926 ADT: 775
RANDOLPH STREET
UnknownOver: LOWER LEV. RANDOLPH
150N 399E TO 440E, Cook, IL
Built 1963 ADT: 12,200
WACKER DR E
UnknownOver: LOWER WACKER DR
340N,100E+0154E, Cook, IL
Built 1973 ADT: 19,500
STETSON AVE
UnknownOver: LOWER STETSON
180 E & 300N TO 340N, Cook, IL
Built 1974 ADT: 3,100
WACKER DR E
UnknownOver: LOWER WACKER DRIVE
340N 154E TO 358E, Cook, IL
Built 1975 ADT: 25,100
RANDOLPH STREET
UnknownOver: VAR CITY STS & RR
150N 100E TO 400E, Cook, IL
Built 1937 ADT: 12,200
43RD STREET PED BR
UnknownOver: LAKE SHORE & METRA
2.3 Mi. S. of I-55, Cook, IL
Built 1939 ADT: 115,300
51ST STREET PED BR
UnknownOver: LAKE SHORE DRIVE
.5 MI. S. OF 47TH ST, Cook, IL
Built 1965 ADT: 102,600
NORTH AVE PED BRDG
UnknownOver: OVER LAKE SHORE DR
0.3 MI N NORTH AVE, Cook, IL
Built 1940 ADT: 131,000
WABASH AVE
UnknownOver: KINZIE STREET
50E, 300N TO 400N, Cook, IL
Built 2005 ADT: 7,350
MONROE ST
UnknownOver: METRA ELECTRIC RR
100S & 200E, Cook, IL
Built 1938 ADT: 1,000
Jackson Dr
UnknownOver: METRA ELECTRIC RR
300 S & 200 E, Cook, IL
Built 1926 ADT: 1,000
MCCORMICK WALK @23
UnknownOver: SB LAKE SHORE DRIVE
0.3 MI N I55, Cook, IL
Built 1966 ADT: 68,700
OAKWOOD BLVD
UnknownOver: LAKE SHORE DRIVE
3900S 926E, Cook, IL
Built 1950 ADT: 113,000
Lake Shore Dr SB
UnknownOver: 47TH ST
4700 S & 1600E, Cook, IL
Built 1937 ADT: 12,200
ILLINOIS ST
UnknownOver: N. ST. CLAIR STREET
500N-300E TO 200E, Cook, IL
Built 2005 ADT: 8,150
LAKE SHORE DR
UnknownOver: W BRYN MAWR AVE
5600N AND 936W, Cook, IL
Built 1954 ADT: 58,800
LAKE SHORE DR
UnknownOver: FOSTER AVE
5200 N. AND 800 W., Cook, IL
Built 1951 ADT: 15,200
LAKE SHORE DRIVE
UnknownOver: LAWRENCE AVE
4800 N & 700 W, Cook, IL
Built 1933 ADT: 15,000
LAKE SHORE DRIVE
UnknownOver: WILSON AVENUE
4600 N & 732 W, Cook, IL
Built 1933 ADT: 9,500
LAKE SHORE DR
UnknownOver: MONTROSE AVE
4400 N.& 646 W., Cook, IL
Built 1940 ADT: 12,000
LAKE SHORE DR
UnknownOver: IRVING PARK RD
4000 N. & 600 W, Cook, IL
Built 1967 ADT: 17,500
LAKE SHORE DR
UnknownOver: BELMONT AV
3200 N.& 400 W., Cook, IL
Built 1941 ADT: 17,700
LAKE SHORE DRIVE
UnknownOver: FULLERTON AVENUE
2400N 100W, Cook, IL
Built 1940 ADT: 21,300
LAKE SHORE DR
UnknownOver: LASALLE DR
1700 N & LSD, Cook, IL
Built 1940 ADT: 21,500
43RD ST PED BRIDGE
UnknownOver: LSD, METRA & ICRR
1140 E & 4300 S, Cook, IL
Built 2023 ADT: 115,300
SOUTH WATER ST
UnknownOver: E SO WATER ST LOW
BEAUBIEN TO STETSON, Cook, IL
Built 2022 ADT: 400
BICYCLE & PEDESTRI
UnknownOver: LSD, Metra Electric
3500 S & 800 E, Cook, IL
Built 2016 ADT: 122,400
41ST STREET PED BR
UnknownOver: LSD, Metra Electric
1100 E & 4100 S, Cook, IL
Built 2018 ADT: 115,300
PEDESTRIAN BRIDGE
UnknownOver: N. WATER STREET
400N 50E, Cook, IL
Built 2005 ADT: 2,100
ORLEANS ST
UnknownOver: KINZIE,RR & MUNI STS
340W 300N TO 400N, Cook, IL
Built 1921 ADT: 6,100
HALSTED STREET
UnknownOver: KINZIE ST, RR TRACKS
KINZIE TO WAYMAN ST., Cook, IL
Built 1971 ADT: 3,100
MCCORMICK WALK @23
UnknownOver: NB LAKE SHORE DRIVE
0.3 MI N I55, Cook, IL
Built 1966 ADT: 68,700
TO I-90 SKWAY EB
UnknownOver: STATE ST
AT 66TH P7C, Cook, IL
Built 1961 ADT: 8,050
I-90 SKYWAY
UnknownOver: ST LAWRENCE AVE
AT 70TH P7C, Cook, IL
Built 1958 ADT: 1,300
I-90 SKYWAY
UnknownOver: 71ST ST
0.1 M E COTTAGE P7C, Cook, IL
Built 1958 ADT: 15,400
I-90 SKYWAY
UnknownOver: COTTAGE GROVE AVE
0.1 M SE 71ST P7C, Cook, IL
Built 1958 ADT: 11,900
I-90 SKYWAY
UnknownOver: EAST END AVE
0.2 M SE STONY ISP7C, Cook, IL
Built 1958 ADT: 900
I-90 SKYWAY
UnknownOver: JEFFERY BLVD
AT 84TH P7C, Cook, IL
Built 1958 ADT: 11,600
I-90 SKYWAY
UnknownOver: 85TH ST
0.09 SW CHGO AVE P7C, Cook, IL
Built 1958 ADT: 825
I-90 SKYWAY
UnknownOver: KINGSTON AVE
AT 89TH P8C, Cook, IL
Built 1958 ADT: 1,800
I-90 SKYWAY
UnknownOver: 92ND ST
0.2 M W COMM AV P8C, Cook, IL
Built 1958 ADT: 1,950
IHB,GT & CR&I RR
UnknownOver: WESTERN BLVD & AVE
0.01 M.S.OF 49TH ST, Cook, IL
Built 1900 ADT: 19,800
C&NW & B&OCT RR
UnknownOver: S.WESTERN AVENUE
1350 S. WESTERN, Cook, IL
Built 1900 ADT: 24,000
PC RR
UnknownOver: WESTN.AV.BLVD.&39ST.
PERSHING & WTRN P5C, Cook, IL
Built 1900 ADT: 22,300
IHB RR
UnknownOver: WESTERN AVE
75TH & WESTERN P6C, Cook, IL
Built 1900 ADT: 25,500
CTA ACCESS RD
UnknownOver: DAN RYAN XWAY
0.4 M S SKYWAY P7C, Cook, IL
Built 1959 ADT: 270,900
CTA ACCESS RD
UnknownOver: DAN RYAN XWAY
0.05 M N 95TH P8C, Cook, IL
Built 1959 ADT: 255,000
COLUMBUS DRIVE
UnknownOver: LOWER LEVEL COLUMBUS
300E.& 150N.TO 340N., Cook, IL
Built 1980 ADT: 18,600
SOUTH WATER ST
UnknownOver: LOWER LEVEL
300N 154E TO 300E, Cook, IL
Built 1980 ADT: 400
Showing 1,201-1,250 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 |