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 ROUTE 30
FairOver: GREEN RIVER
6.2 MI E JCT US 52, Lee, IL
Built 1937 Load: 28.8 t ADT: 1,950
CH 33 ROCKY FORD R
FairOver: GREEN RIVER TRIBUTRY
2 MI S OF AMBOY, Lee, IL
Built 1958 Load: 28.8 t ADT: 225
CO HWY 7 FAS 1322
FairOver: CREEK BROUGHTON
4 MI NE EMINGTON, Livingston, IL
Built 1955 Load: 28.8 t ADT: 225
TR 95
FairOver: MOLE CREEK
220 E, 2200 N, Livingston, IL
Built 1960 Load: 28.8 t ADT: 75
TR 137
FairOver: DRAINAGE DITCH
595 E, 1600 N, Livingston, IL
Built 1932 Load: 28.8 t ADT: 75
TR 121A
FairOver: 5 MILE CR
3255 E, 1900 N, Livingston, IL
Built 1975 Load: 28.8 t ADT: 25
TR 84B
FairOver: IDA CREEK
2395N, 1100E, Livingston, IL
Built 1975 Load: 28.8 t ADT: 20
MT PULASKI-ILLIOPO
FairOver: LAKE FORK CK
4.5 MI S MT PULASKI, Logan, IL
Built 1940 Load: 28.8 t ADT: 550
WYCKLES RD(FAS 153
FairOver: SANGAMON RIVER
W. EDGE ROCK SPRINGS, Macon, IL
Built 1964 Load: 28.8 t ADT: 1,900
TR 114B(RILEY RD)
FairOver: WILLOW BRANCH
1.2 MI SE OF MACON, Macon, IL
Built 1977 Load: 28.8 t ADT: 25
ILL 143
FairOver: CAHOKIA CREEK
NW ILL 159, Madison, IL
Built 1937 Load: 28.8 t ADT: 7,950
IL 37 (FAS 2701)
FairOver: SCHNEIDER SPRINGS BR
2 MI S FARINA, Marion, IL
Built 1952 Load: 28.8 t ADT: 1,200
TR 126 (TH-S48)
FairOver: S BRANCH CROW CREEK
T29N-R1W-3PM SEC 35, Marshall, IL
Built 1970 Load: 28.8 t ADT: 50
FAS 441 - CH 26
FairOver: E FORK LAMOINE RIVER
NE-34-T4NR4W, McDonough, IL
Built 1966 Load: 28.8 t ADT: 175
US 12
FairOver: NIPPERSINK CREEK
4.9 M NW OF LAKE CO, McHenry, IL
Built 1932 Load: 28.8 t ADT: 9,650
TR 568
FairOver: BRANCH SALT CREEK
1.0 MI SW BELLFLOWER, McLean, IL
Built 1968 Load: 28.8 t ADT: 50
FAS 1480 CH 36
FairOver: KICKAPOO CKEEK
2.2 MI SW DOWNS, McLean, IL
Built 1972 Load: 28.8 t ADT: 200
TR 342
FairOver: BRANCH KICKAPOO CR
5.4 MI N DOWNS, McLean, IL
Built 1984 Load: 28.8 t ADT: 50
FAS 206-CH 4
FairOver: PARKER RUN
SE-36-T15NR1W, Mercer, IL
Built 1976 Load: 28.8 t ADT: 950
TR 280
FairOver: TERRE CRK.
1 MI N PISGAH, Morgan, IL
Built 1963 Load: 28.8 t ADT: 50
CH-7/FAS-579
FairOver: BN Railroad
.5MI S ARENZVILLE, Morgan, IL
Built 1988 Load: 28.8 t ADT: 2,250
TR 12
FairOver: MARROWBONE CREEK
0.9 MI W BETHANY, Moultrie, IL
Built 1957 Load: 28.8 t ADT: 20
VALENTINE ROAD
FairOver: BRANCH PINE CREEK
4.5 MI SW MT MORRIS, Ogle, IL
Built 1973 Load: 28.8 t ADT: 25
TR 178
FairOver: LAKE FORK DRAIN DIT
2.6 MI SW IVESDALE, Piatt, IL
Built 1937 Load: 28.8 t ADT: 25
PUBLIC RD I/MS 606
FairOver: HILL CREEK
PEARL, Pike, IL
Built 1934 Load: 28.8 t ADT: 50
TR 88 OFF ILL 146
FairOver: FLAT LICK CREEK
5.25M E OF ILL 145, Pope, IL
Built 1962 Load: 28.8 t ADT: 10
FAP-327/FR-1327
FairOver: STREAM
.6 MI W CLAREMONT RD, Richland, IL
Built 1923 Load: 28.8 t ADT: 50
TR-240
FairOver: PAUL CREEK
3 MI N CLAREMONT, Richland, IL
Built 1909 Load: 28.8 t ADT: 25
TR 465 18S
FairOver: WEST BRANCH
3.5 SW OF PAWNEE, Sangamon, IL
Built 1966 Load: 28.8 t ADT: 50
TR 35 A
FairOver: FLAT BRANCH
3 MI SE OF MOWEAQUA, Shelby, IL
Built 1916 Load: 28.8 t ADT: 75
WB CD TO IL3 SB "0
FairOver: GROUND
PSC ABUT 0-11->P-017, St. Clair, IL
Built 1971 Load: 28.8 t ADT: 23,900
ROCK CITY RD
FairOver: ROCK RUN CR
3.0 MI W DAVIS, Stephenson, IL
Built 1965 Load: 28.8 t ADT: 625
IL 9 (FAP 697)
FairOver: WHISKY CREEK
2 MI E OF RANKIN, Vermilion, IL
Built 1963 Load: 28.8 t ADT: 1,950
CH 11
FairOver: STONY CREEK
IN MUNCIE, Vermilion, IL
Built 1934 Load: 28.8 t ADT: 225
TR 83
FairOver: EAST BRANCH
2 MI NW ALVIN, Vermilion, IL
Built 1959 Load: 28.8 t ADT: 200
CH-9
FairOver: LITTLE BONPAS CREEK
1.5 MI NW LANCASTER, Wabash, IL
Built 1939 Load: 28.8 t ADT: 100
FAI 64 EB
FairOver: MIDDLE CREEK
3.5 M E ILL 127, Washington, IL
Built 1972 Load: 28.8 t ADT: 14,000
FAI 64 WB
FairOver: MIDDLE CREEK
1.70 MI E OF TR 162A, Washington, IL
Built 1972 Load: 28.8 t ADT: 14,000
FAS-818
FairOver: LITTLE DRY FORK
4 MI N SIMS, Wayne, IL
Built 1909 Load: 28.8 t ADT: 350
FAS 1360 CH 9
FairOver: DENMAN CREEK
4 MI N CARLOCK, Woodford, IL
Built 1962 Load: 28.8 t ADT: 200
TR 53
FairOver: DRY FORK CR
1M W SORENTO, Bond, IL
Built 1961 Load: 29.2 t ADT: 125
TR 291
FairOver: KASKASKIA RIVER
3.5 MI SW SADORUS, Champaign, IL
Built 1974 Load: 29.2 t ADT: 50
CH-4 FAS 637
FairOver: HANEYS SLOUGH
1.75 MI W MOWEAQUA, Christian, IL
Built 1959 Load: 29.2 t ADT: 1,000
FAP 832(IL 49)
FairOver: W FORK EMBARRASS R
N OF WESTFIELD, Clark, IL
Built 1995 Load: 29.2 t ADT: 1,050
FAS 1781
FairOver: CARLYLE LAKE
2 MI SW KEYESPORT, Clinton, IL
Built 1963 Load: 29.2 t ADT: 500
CHICAGO AVE
FairOver: DESPLAINES RIVER
E OF 1ST AVE, Cook, IL
Built 1930 Load: 29.2 t ADT: 7,950
NB 41 FROM RANDOLP
FairOver: LAND
500E.& 150N., Cook, IL
Built 1986 Load: 29.2 t ADT: 7,300
E SANDWICH RD
FairOver: LITTLE ROCK CREEK BR
655N 1750E, DeKalb, IL
Built 1970 Load: 29.2 t ADT: 1,800
IL 1 US 150(FAP 33
FairOver: CRABAPPLE CREEK
1 MI S OF RIDGEFARM, Edgar, IL
Built 1954 Load: 29.2 t ADT: 2,300
FAS 1678(CH 3)
FairOver: CRABAPPLE CREEK
E OF WOODYARD STA, Edgar, IL
Built 1954 Load: 29.2 t ADT: 100
Showing 6,501-6,550 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.