Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near median Poor share
Illinois bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
Data updated May 2026
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges whose lowest applicable component is rated 0-4
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 - Poor-condition share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Illinois on the same metric.
RI
Rhode Island
7.69% top marginal rate
NE
Nebraska
7.73% top marginal rate
IL
Illinois
7.88% top marginal rate
MA
Massachusetts
7.96% top marginal rate
MO
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
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
PoorOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
PoorOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
PoorOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
PoorOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
UNION PACIFIC RR
UnknownOver: MEREDITH DRIVE
E OF BL55 IN SHERMAN, Sangamon, IL
Built 2005 ADT: 2,800
NORFOLK SOUTHERN R
UnknownOver: SOUTH GRAND AVE
E OF 9TH ST - SPFLD, Sangamon, IL
Built 1940 ADT: 10,100
MUN 6000 (Oak St)
UnknownOver: UPRR & Elm St
SW edge Williamsvill, Sangamon, IL
Built 2021 ADT: 450
NSRR
UnknownOver: 5th St
0.45 mi N Stanford, Sangamon, IL
Built 2022 ADT: 12,700
UPRR
UnknownOver: 6th St
0.56 mi N Stanford, Sangamon, IL
Built 2022 ADT: 13,000
NSRR
UnknownOver: 6th St
0.56 mi N Stanford, Sangamon, IL
Built 2022 ADT: 13,000
BNSF RR
UnknownOver: IL 100
.1M N OLD 67 FREDRCK, Schuyler, IL
Built 1934 ADT: 1,100
CB&Q RR
UnknownOver: TR 175
2.7 M WNW BROWNING, Schuyler, IL
Built 1900 ADT: 50
CB&Q RR
UnknownOver: TR 251
2.4 M N FREDERICK, Schuyler, IL
Built 1900 ADT: 25
CB&Q RR
UnknownOver: TR 253
2.2 M N FREDERICK, Schuyler, IL
Built 1900 ADT: 25
CB&Q RR
UnknownOver: TR 322
2.9 M N FREDERICK, Schuyler, IL
Built 1900 ADT: 25
CB&Q RR
UnknownOver: TR 324
AT FREDERICK, Schuyler, IL
Built 1900 ADT: 25
CB&Q RR
UnknownOver: TR 332
2.1 M WNW BROWNING, Schuyler, IL
Built 1900 ADT: 25
OLD US 36
UnknownOver: FAI 72
WINCHESTER EXIT#52, Scott, IL
Built 1976 ADT: 8,800
TR 128
UnknownOver: FAI 72
2.1MI E EXIT#52, Scott, IL
Built 1976 ADT: 8,800
CH 14
UnknownOver: FAI 72
2.5MI W EXIT#52, Scott, IL
Built 1979 ADT: 9,650
TR 42
UnknownOver: FAI 72
1.3MI E I72/IL100, Scott, IL
Built 1979 ADT: 9,650
FAI 72 EB
UnknownOver: ILL 100
I-72 &IL 100 INT, Scott, IL
Built 1981 ADT: 1,100
FAI 72 WB
UnknownOver: ILL 100
I-72 & IL100 INT, Scott, IL
Built 1981 ADT: 1,350
FAI 72 EB
UnknownOver: TR 55
2.9MI W IL 100 INT, Scott, IL
Built 1986 ADT: 75
FAI 72 WB
UnknownOver: TR 55
2.9MI W IL 100 INT, Scott, IL
Built 1986 ADT: 75
FAI 72
UnknownOver: TR 44
1.6MI W I72/100 INT, Scott, IL
Built 1987 ADT: 50
FAS 1656(CH 23)
UnknownOver: I-57
1 MI N EFF CO LINE, Shelby, IL
Built 1964 ADT: 18,900
SIR RR
UnknownOver: WASH ST (MS 7300A)
SOUTH OF S SECOND, Shelby, IL
Built 1900 ADT: 200
MOPAC RR
UnknownOver: TR 222
.5 MI SE SHELBYVILLE, Shelby, IL
Built 1896 ADT: 500
FAI 64 WB
UnknownOver: ST CLAIR AVE E ST L
ST CLAIR AVE E ST L, St. Clair, IL
Built 1960 ADT: 4,300
FAI 64 WB
UnknownOver: EB 55 & Ramp to 64EB
W of Exchange Avenue, St. Clair, IL
Built 1962 ADT: 67,300
Ramp to EB I-64
UnknownOver: I-55 EB mainline
WEST OF EXCHANGE AVE, St. Clair, IL
Built 1962 ADT: 67,300
I-55/64; US 40 WB
UnknownOver: TRENDLY AVE. E ST L
East of PSC, St. Clair, IL
Built 1965 ADT: 275
I-55/64; US 40 EB
UnknownOver: TRENDLY AVE E ST L
3RD BR E POP ST BR, St. Clair, IL
Built 1966 ADT: 275
I-55/64; US 40 WB
UnknownOver: 4TH ST in E ST LOU
WB OVER 4TH ST, St. Clair, IL
Built 1965 ADT: 150
I-55/64; US 40 EB
UnknownOver: 4TH ST in E ST LOU
EB OVER 4TH ST, St. Clair, IL
Built 1965 ADT: 150
I-55/64; US 40 WB
UnknownOver: Broadway & Metrolink
E. St. Louis, St. Clair, IL
Built 1965 ADT: 9,600
I-55/64; US 40 EB
UnknownOver: Broadway & Metrolink
E St. Louis, St. Clair, IL
Built 1965 ADT: 9,600
I-55/64; US 40 EB
UnknownOver: Missouri Avenue
1/2 mi W 3rd St Exit, St. Clair, IL
Built 1965 ADT: 10
EB 55/MLK EB&WB AP
UnknownOver: 3RD ST EXIT to EStL
E ST L - 3rd ST EXIT, St. Clair, IL
Built 1961 ADT: 3,900
3RD ST TO EB I-55/
UnknownOver: RAMPS TO/FROM MLK DR
E ST LOUIS, St. Clair, IL
Built 1961 ADT: 800
I-55 WB; US 40 WB
UnknownOver: ST CLAIR AVE
W of ESL Tri-level, St. Clair, IL
Built 1960 ADT: 4,300
I-55/64; US 40 EB
UnknownOver: RAMPS TO/FROM MLK DR
E ST LOUIS, St. Clair, IL
Built 1961 ADT: 800
RAMP TO IL 203 NB
UnknownOver: DRNG CANAL & I-55/70
0.4 M E E ST LOUIS, St. Clair, IL
Built 1960 ADT: 67,300
ILL 203 NB
UnknownOver: SB RAMP TO EB 55/70
0.6 M E E ST LOUIS, St. Clair, IL
Built 1960 ADT: 17,200
ILL 203
UnknownOver: FAI 70
0.5 M N E ST LOUIS, St. Clair, IL
Built 1960 ADT: 50,300
ILL 15
UnknownOver: ILL 157
1.8 M E JCT ILL 163, St. Clair, IL
Built 1940 ADT: 6,850
ILL 15 WB
UnknownOver: ILL 158
S BELLEVILLE, St. Clair, IL
Built 1958 ADT: 9,050
ILL 15 EB
UnknownOver: ILL 158
S BELLEVILLE, St. Clair, IL
Built 1958 ADT: 9,050
ILL 15 WB
UnknownOver: ILL 159
0.30MI S IL 158&177, St. Clair, IL
Built 1957 ADT: 14,200
ILL 15 EB
UnknownOver: ILL 159
0.32MI S IL 158&177, St. Clair, IL
Built 1957 ADT: 12,100
ST CLAIR AVENUE
UnknownOver: I-55/64; US 40 EB
N of Collinsville Av, St. Clair, IL
Built 1961 ADT: 74,500
FRANK SCOTT PKWY W
UnknownOver: ILL 15
1.5 M E JCT 13, St. Clair, IL
Built 1964 ADT: 20,400
ILL 13
UnknownOver: ILL 15
SW BELLEVILLE, St. Clair, IL
Built 1959 ADT: 19,700
Showing 3,351-3,400 of 27,743 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.