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
US 24 (3RD ST)
UnknownOver: CEDAR CREEK & BN RR
1.5M N IL104/BROADWY, Adams, IL
Built 1968 ADT: 75
FAP 502/IL 57/3RD
UnknownOver: PAYSON ST
.5M S US 24/MAINE ST, Adams, IL
Built 1959 ADT: 175
US 24(EB)/ MAINE S
UnknownOver: MISS. R./FRONT ST/BN
W EDGE DWNTWN QUINCY, Adams, IL
Built 1930 ADT: 1,550
ILL 96
UnknownOver: FAI 172
I-72/IL96 INT, Adams, IL
Built 1976 ADT: 7,400
W ST ANTHONY/TR 42
UnknownOver: I-172
1.8M N IL 96, Adams, IL
Built 1976 ADT: 7,400
CH 5
UnknownOver: FAI 172
.7MI S I172/IL104, Adams, IL
Built 1976 ADT: 7,400
ILL 104
UnknownOver: FAI 172
I-172/IL104 INT, Adams, IL
Built 1976 ADT: 8,600
FAS 1604/TR 349
UnknownOver: FAI 172
1.3MI N I172/IL104, Adams, IL
Built 1976 ADT: 7,350
CH 3 / ELLINGTON R
UnknownOver: I-172
2.1M S US 24, Adams, IL
Built 1976 ADT: 7,350
TR 551
UnknownOver: FAI 172
2 MI S I172/IL96, Adams, IL
Built 1981 ADT: 9,750
TR 531A
UnknownOver: FAI 172
3.6MI N I172/IL57, Adams, IL
Built 1981 ADT: 9,750
TR 114A
UnknownOver: FAI 172
1MI S I172/IL96, Adams, IL
Built 1981 ADT: 9,750
FAI 172 SB
UnknownOver: ILL 57
I-172/IL57 INT, Adams, IL
Built 1982 ADT: 4,000
FAI 172 NB
UnknownOver: ILL 57
I-172/IL57 INT, Adams, IL
Built 1982 ADT: 1,100
TR 597
UnknownOver: FAI 172
.7MI S I172/IL57, Adams, IL
Built 1982 ADT: 13,100
US 24(WB)/ BROADWA
UnknownOver: MISS. R/STREETS/BNRR
W EDGE DWNTWN QUINCY, Adams, IL
Built 1986 ADT: 875
OR 79
UnknownOver: FAI 172
2.2MI S I172/IL57, Adams, IL
Built 1990 ADT: 13,100
I-172 & ILL 336 SB
UnknownOver: US 24
US 24 & IL 336 JCT, Adams, IL
Built 1994 ADT: 4,350
I-172 & ILL 336 NB
UnknownOver: US 24
US 24 & IL 336 JCT, Adams, IL
Built 1994 ADT: 4,000
FAP 733
UnknownOver: ILL 336
0.3 MI E MENDON, Adams, IL
Built 2001 ADT: 5,800
RAILROAD
UnknownOver: US 24 - FAP 63
1 MI E PALOMA, Adams, IL
Built 1924 ADT: 4,000
B&N RR
UnknownOver: FAU 7818
FRONT STREET,QUINCY, Adams, IL
Built 1900 ADT: 1,150
RAILROAD
UnknownOver: N 12TH STREET
N 12TH QUINCY, Adams, IL
Built 1900 ADT: 6,300
RAILROAD
UnknownOver: ILL 94 FAP 518
1 MI. SO GOLDEN, Adams, IL
Built 1900 ADT: 800
B&N RR
UnknownOver: CH 3
3 M ENE QUINCY, Adams, IL
Built 1900 ADT: 650
B&N RR
UnknownOver: CH 0007
CEDAR ST IN QUINCY, Adams, IL
Built 1900 ADT: 600
FAI-57 NB
UnknownOver: TR-163B
0.3 MI S PULASKI CO, Alexander, IL
Built 1968 ADT: 200
I 57 NB
UnknownOver: ILL3/US 51-CS 6010A-CNIC
CAIRO INTERCHANGE, Alexander, IL
Built 1978 ADT: 10
I 57 SB
UnknownOver: ILL3/US 51-CS 6010A-CNIC
CAIRO INTERCHANGE, Alexander, IL
Built 1978 ADT: 10
CNIC
UnknownOver: FAI 57 & US 51
1 MI. N. OF ILL 3, Alexander, IL
Built 1977 ADT: 13,400
CNIC RR
UnknownOver: US 51
0.5 MI E I-57, Alexander, IL
Built 1974 ADT: 4,300
ICG RR
UnknownOver: US 51
1ST OVRHEAD CAIRO, Alexander, IL
Built 1903 ADT: 5,200
ICG RR
UnknownOver: US 51
2ND OVERHEAD CAIRO, Alexander, IL
Built 1903 ADT: 5,200
PENN CENTRAL
UnknownOver: US 51
3RD OVERHEAD CAIRO, Alexander, IL
Built 1917 ADT: 5,200
MO PAC RR
UnknownOver: OLD ILL RTE 3
GALE, Alexander, IL
Built 1900 ADT: 100
UNION PACIFIC RR
UnknownOver: MISSISSIPPI RV
THEBES, Alexander, IL
Built 1902 ADT: 10
FAI 70 EB
UnknownOver: PLEASANT MOUND AVE
2.6 MI E ILL 127, Bond, IL
Built 1966 ADT: 250
FAI 70 WB
UnknownOver: PLEASANT MOUND AVE
2.6 MI E ILL 127, Bond, IL
Built 1966 ADT: 250
US 40 / POKEY ROAD
UnknownOver: FAI 70 EB & WB
AT POCAHONTAS, Bond, IL
Built 1966 ADT: 26,900
US 40/FAS 779
UnknownOver: FAI 70 EB & WB
1.6 MI E POCAHONTAS, Bond, IL
Built 1966 ADT: 26,200
US 40 / FAS 1751
UnknownOver: Main St / FAS 1748
IN SMITHBORO, Bond, IL
Built 1942 ADT: 700
ILL 127
UnknownOver: FAI 70 EB & WB
0.4 MI S US 40, Bond, IL
Built 1966 ADT: 22,800
MULBERRY GROVE ROA
UnknownOver: FAI 70 EB & WB
0.2 MI S MULBERRY GR, Bond, IL
Built 1966 ADT: 25,800
MADISON CO LINE RO
UnknownOver: FAI 70
1.25M N PIERRON, Bond, IL
Built 1965 ADT: 26,900
TR 112-SUGARLOAF R
UnknownOver: FAI 70
3.2 MI E POCAHONTAS, Bond, IL
Built 1966 ADT: 26,200
DUDLEYVILLE RD-TR1
UnknownOver: FAI 70
7.9 MI E POCAHONTAS, Bond, IL
Built 1966 ADT: 24,100
SMITHBORO RD-TR 16
UnknownOver: FAI 70
3.4 MI E ILL 127, Bond, IL
Built 1965 ADT: 22,800
KING ROAD - TR 226
UnknownOver: FAI 70
4.1 MI E ILL 127, Bond, IL
Built 1966 ADT: 22,800
MILLERSBURG AVENUE
UnknownOver: FAI 70
5.7 M E POCAHONTAS, Bond, IL
Built 1966 ADT: 24,100
ANDREWS DR.
UnknownOver: US 40 AND CSX RR
1.00 MI E IL 127, Bond, IL
Built 2011 ADT: 1,450
Showing 1-50 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 |