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 474 RMP #109
UnknownOver: EB I-74
2 MI W STERLING AVE, Peoria, IL
Built 1978 ADT: 32,500
WB I-474
UnknownOver: EB I-74
2 MI W STERLING AVE, Peoria, IL
Built 1979 ADT: 21,100
I-474 RMP1.18
UnknownOver: WB I-474
2 MI W STERLING AVE, Peoria, IL
Built 1978 ADT: 4,850
EB I-474,474 RP 1.
UnknownOver: ILL 8
1 M NW OF POTTSTOWN, Peoria, IL
Built 1978 ADT: 2,750
WB I-474
UnknownOver: ILL 8
1 M NW OF POTTSTOWN, Peoria, IL
Built 1978 ADT: 2,750
EB I-474
UnknownOver: TR 173 Pottstown Rd
SW1/4 35 KICKAPOO, Peoria, IL
Built 1978 ADT: 650
WB I-474
UnknownOver: TR 173 Pottstown Rd
SW 1/4 35 KICKAPOO, Peoria, IL
Built 1978 ADT: 650
FARMINGTON RD
UnknownOver: I-474
.1 MI E COUNTRY LANE, Peoria, IL
Built 1974 ADT: 26,000
FAP 671 SPUR EB
UnknownOver: I-474
1/2M NORTH BELLEVUE, Peoria, IL
Built 1978 ADT: 22,800
FAP 671 SPUR WB
UnknownOver: I-474
0.5M NORTH BELLEVUE, Peoria, IL
Built 1978 ADT: 22,800
CLOSEN RD
UnknownOver: I-474
IN BELLEVUE, Peoria, IL
Built 1978 ADT: 22,800
AIRPORT RD-FAU 657
UnknownOver: I-474
0.5M NE G.P. AIRPORT, Peoria, IL
Built 1978 ADT: 23,100
WB I-474
UnknownOver: KICKAPOO CR,RD,UPRR
0.5 MI N OF US 24, Peoria, IL
Built 1978 ADT: 1,900
EB I-474
UnknownOver: KICKAPOO CR,RD,UPRR
0.5 MI N OF US 24, Peoria, IL
Built 1978 ADT: 1,900
EB I-474
UnknownOver: US 24 (S. ADAMS ST.)
0.5 MI S OF PEORIA, Peoria, IL
Built 1978 ADT: 23,700
WB I-474
UnknownOver: US 24 (S. ADAMS ST.)
0.5 MI S OF PEORIA, Peoria, IL
Built 1978 ADT: 18,000
US 24 & ILL 9(SB)
UnknownOver: KJRY RR OLD SBI 9
1 MI E OF MAPLETON, Peoria, IL
Built 1977 ADT: 1,150
NB ILL 6
UnknownOver: CHARTER OAK ROAD
1 MI N OF I-74, Peoria, IL
Built 1978 ADT: 4,650
SB ILL 6
UnknownOver: CHARTER OAK ROAD
1 MI N OF I-74, Peoria, IL
Built 1978 ADT: 4,650
US 150
UnknownOver: ILL 6
0.25 MI E OF IL 91, Peoria, IL
Built 1981 ADT: 28,400
UP RR (000224T)
UnknownOver: ILL 6
SW-36-T10NR7E, Peoria, IL
Built 1982 ADT: 21,100
SB ILL 6
UnknownOver: FAS387(CHR52)RADNOR
CTR S1/2-36-T10NR7E, Peoria, IL
Built 1982 ADT: 2,400
NB ILL 6
UnknownOver: FAS 387(CHR52)Radnor
CTR S-1/2-36-T10NR7E, Peoria, IL
Built 1982 ADT: 2,400
FAU 6584-ALLEN RD
UnknownOver: ILL 6
CTR-S1/2-31-T10NR8E, Peoria, IL
Built 1982 ADT: 21,100
IL 40
UnknownOver: IL 6
CTR-32-T10NR8E, Peoria, IL
Built 1982 ADT: 15,500
MOSSVILLE RD-CH D3
UnknownOver: ILL 6
.35M W OF ILL 29, Peoria, IL
Built 1984 ADT: 10,800
US 150 EB
UnknownOver: IL 29 NE ADAMS ST
NE C.L PEORIA, Peoria, IL
Built 1995 ADT: 13,300
US 150 WB
UnknownOver: IL 29
IL 29 NE ADAMS ST, Peoria, IL
Built 1995 ADT: 10,900
I 74 RP 21.16
UnknownOver: I 74 RP 20.63
US 150/I74 INTERCHAN, Peoria, IL
Built 2006 ADT: 1,050
EB74 TO IL 40 NBSB
UnknownOver: I-74,RPF-1,RP F-6
1.25 MI W ILLINOIS R, Peoria, IL
Built 2005 ADT: 57,800
SB KNOXVILLE,RPF-2
UnknownOver: I-74 AND RP F-6
1.25 MI W ILL RIVER, Peoria, IL
Built 2005 ADT: 57,800
NB KNOXVILLE
UnknownOver: FAI 74 RP 24.11
0.75 MI W ILL RIVER, Peoria, IL
Built 2006 ADT: 4,000
EB I-74,RP F-2
UnknownOver: GLEN OAK AVE
.75 MI W ILLINOIS R, Peoria, IL
Built 2006 ADT: 6,100
WB I-74
UnknownOver: GLEN OAK AVE
.75 MI W ILLINOIS R, Peoria, IL
Built 2006 ADT: 6,100
JEFFERSON ST-US 24
UnknownOver: I-74
SB US24 IN PEORIA, Peoria, IL
Built 2005 ADT: 57,800
FAYETTE RP TO 74EB
UnknownOver: 74EB TO WASHINGTON
DOWNTOWN PEORIA, Peoria, IL
Built 2006 ADT: 5,100
WB74 TO ADAMS/WASH
UnknownOver: WASHINGTON TO 74WB
DOWNTOWN PEORIA, Peoria, IL
Built 2005 ADT: 3,150
ADAMS ST
UnknownOver: I-74
OVER RMPS G-1,2,&3, Peoria, IL
Built 2005 ADT: 57,800
I 74 RPS20.97,21.5
UnknownOver: FA 317 RP 19.99
US 150 INTERCHANGE, Peoria, IL
Built 2006 ADT: 27,900
ELLIS AVE
UnknownOver: I-74
.65 MI E UNIVERSITY, Peoria, IL
Built 2004 ADT: 51,000
PERRY STREET
UnknownOver: I-74
PERRY ST IN PEORIA, Peoria, IL
Built 2005 ADT: 57,800
MONROE STREET
UnknownOver: I-74
MONROE ST IN PEORIA, Peoria, IL
Built 2005 ADT: 57,800
MADISON AVE
UnknownOver: I-74
MADISON AVE PEORIA, Peoria, IL
Built 2005 ADT: 57,800
UNIVERSITY AVE
UnknownOver: I74 & DRY RUN CREEK
UNIVERSITY AVE INTER, Peoria, IL
Built 2004 ADT: 51,000
FA 317RP 19.99
UnknownOver: WAR MEMORIAL DR
US 150 INTERCHANGE, Peoria, IL
Built 2006 ADT: 5,800
STERLING AVE
UnknownOver: I-74
.5 MI W US 150 INTER, Peoria, IL
Built 2004 ADT: 27,900
BROADWAY ST
UnknownOver: I-74 & DRY RUN CRK
.3 MI E UNIVERSITY, Peoria, IL
Built 2004 ADT: 51,000
SHERIDAN ROAD
UnknownOver: I-74
.5 MI E UNIVERSITY, Peoria, IL
Built 2004 ADT: 51,000
NORTH ST
UnknownOver: I-74
.75 MI E UNIVERSITY, Peoria, IL
Built 2002 ADT: 51,000
N GALE AVE
UnknownOver: I-74
GALE AVE INTERCHANGE, Peoria, IL
Built 2004 ADT: 43,800
Showing 3,051-3,100 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 |