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 45
FairOver: STREAM
S OF WILLIAMSON CO, Johnson, IL
Built 1956 Load: 34.7 t ADT: 1,450
PRAIRIE STREET
FairOver: BLACKBERRY CREEK
0.7 MI W Orchard Rd., Kane, IL
Built 1972 Load: 34.7 t ADT: 1,400
TR-868 (Kenmar Dr)
FairOver: Stream
1.5 MI S ELBURN, Kane, IL
Built 1986 Load: 34.7 t ADT: 350
I-57 NB
FairOver: Minnie Creek
4.3 M N Chebanse Int, Kankakee, IL
Built 1967 Load: 34.7 t ADT: 9,700
TR 176
FairOver: SPRING CR
2.5 MI E AROMA PK, Kankakee, IL
Built 1969 Load: 34.7 t ADT: 275
BR1SBIN RD/MS0020
FairOver: W AUX SABLE CK
1.5 MI N OF ILL 52, Kendall, IL
Built 1981 Load: 34.7 t ADT: 225
TR 441
FairOver: TRIB COVEL CR
N 22ND E 1820, LaSalle, IL
Built 1967 Load: 34.7 t ADT: 75
TR 68A
FairOver: BAILEY CREEK
E 4TH N 1950, LaSalle, IL
Built 1981 Load: 34.7 t ADT: 75
TR 92C
FairOver: TRIB TO BAKER RUN
2215 N, 1200 E, Livingston, IL
Built 1979 Load: 34.7 t ADT: 100
TR 111B
FairOver: ROOKS CREEK
940 E, 2000 N, Livingston, IL
Built 1983 Load: 34.7 t ADT: 50
CH-6 BEASN-CHSTNT
FairOver: SALT CK
2 MI N CHESTNUT, Logan, IL
Built 1961 Load: 34.7 t ADT: 350
TR 128
FairOver: LAKE FORK CREEK
2 E 1 MI N BROADWELL, Logan, IL
Built 1981 Load: 34.7 t ADT: 225
N MONROE ST(FAU743
FairOver: SPRING CREEK
N SIDE OF DECATUR, Macon, IL
Built 1969 Load: 34.7 t ADT: 8,650
TR 263(RIDLEN RD)
FairOver: WILLOW BRANCH
1.2 MI SE MACON, Macon, IL
Built 1976 Load: 34.7 t ADT: 350
SHIPMANN BLACKTOP
FairOver: HURRICANE CREEK
9.6MI N JCT ILL 16, Macoupin, IL
Built 1994 Load: 34.7 t ADT: 1,750
TR 325
FairOver: COOPS CR
3 MI. N. 2MI. W SHIP, Macoupin, IL
Built 1978 Load: 34.7 t ADT: 75
TR 173
FairOver: SOLOMON CK
1.3 MI W HETTICK, Macoupin, IL
Built 1986 Load: 34.7 t ADT: 50
IL 3 NB
FairOver: NSRR
3.8 M S FAI 270, Madison, IL
Built 1967 Load: 34.7 t ADT: 13,000
IL 3 SB
FairOver: NSRR
3.8 M S FAI 270, Madison, IL
Built 1967 Load: 34.7 t ADT: 13,000
IL 29
FairOver: SALT CREEK
MASON MENARD CO LINE, Mason, IL
Built 2002 Load: 34.7 t ADT: 2,000
FAS 489 CH 21
FairOver: MACKINAW RIVER
1.0 MI SW LEXINGTON, McLean, IL
Built 1964 Load: 34.7 t ADT: 775
TOWANDA AVE
FairOver: SUGAR CREEK
1.0 MI NNW 55 & 9, McLean, IL
Built 1970 Load: 34.7 t ADT: 4,850
TR 101
FairOver: CLARY CR
2.0 MI N TALLULA, Menard, IL
Built 1900 Load: 34.7 t ADT: 50
TR 138B
FairOver: CAMP CREEK
SE-19-T15NR3W, Mercer, IL
Built 1980 Load: 34.7 t ADT: 25
TR 146
FairOver: CAMP CREEK
SW-20-T15NR3W, Mercer, IL
Built 1980 Load: 34.7 t ADT: 25
CH 5/FAS 857
FairOver: HORSE CREEK
2.5 N AMESCH 5, Monroe, IL
Built 1987 Load: 34.7 t ADT: 850
IL 133 (FAP 749)
FairOver: DRAINAGE DITCH
W EDGE OF ARTHUR, Moultrie, IL
Built 1929 Load: 34.7 t ADT: 3,650
FAS 1664
FairOver: CAMFIELD BRANCH
2 S 1 W SULLIVAN, Moultrie, IL
Built 1969 Load: 34.7 t ADT: 425
LOWELL PARK ROAD
FairOver: PINE CREEK
2.5 MI SW MT MORRIS, Ogle, IL
Built 1984 Load: 34.7 t ADT: 950
PARK ROAD
FairOver: DRY RUN CREEK
NE1/4 6 PEORIA TWP, Peoria, IL
Built 1964 Load: 34.7 t ADT: 2,000
TR 278
FairOver: COLLIER CREEK
0.5 MI N OF TAMAROA, Perry, IL
Built 1991 Load: 34.7 t ADT: 75
I-74 (WB)
FairOver: NS Railway & Madden Cree
.5 MI W MANSFIELD, Piatt, IL
Built 1970 Load: 34.7 t ADT: 10,750
ILL 106
FairOver: HADLEY CREEK
1.4 MI NE KINDERHOOK, Pike, IL
Built 1956 Load: 34.7 t ADT: 1,300
I 57 NB & US 51 NB
FairOver: CACHE RIVER OVERFLOW
3.2 MI S UNION CO, Pulaski, IL
Built 1964 Load: 34.7 t ADT: 6,900
TR-176
FairOver: BIG CREEK
2 MI SE OLNEY, Richland, IL
Built 1954 Load: 34.7 t ADT: 200
SBI-4
FairOver: CAHOKIA CANAL
E ILL 203 S BEND RD, St. Clair, IL
Built 1923 Load: 34.7 t ADT: 900
I-74 (EB)
FairOver: VERMILION RIVER
S OF DANVILLE, Vermilion, IL
Built 1964 Load: 34.7 t ADT: 13,600
FAI 64 EB
FairOver: NORTH CREEK
1.38M W OF ILL 127, Washington, IL
Built 1969 Load: 34.7 t ADT: 14,650
FAI 64 WB
FairOver: NORTH CREEK
1.36 MI W ILL 127, Washington, IL
Built 1969 Load: 34.7 t ADT: 14,650
I-64 EB
FairOver: ICRR
0.38 mi W of US 51, Washington, IL
Built 1972 Load: 34.7 t ADT: 14,000
I-64 WB
FairOver: ICRR
0.38 mi W of US 51, Washington, IL
Built 1972 Load: 34.7 t ADT: 14,000
ILL 127
FairOver: BR OF CROOKED CR
1.4 MI N OF ILL 177, Washington, IL
Built 1936 Load: 34.7 t ADT: 2,650
FAI-64 WB
FairOver: EAGLE SLOUGH DITCH
1.75 MI W 45 INT, Wayne, IL
Built 1974 Load: 34.7 t ADT: 5,500
FAI-64
FairOver: AUXIER CR BR
3.5 MI E JEFFERSN CL, Wayne, IL
Built 1974 Load: 34.7 t ADT: 11,700
I 64 EB
FairOver: LITTLE WABASH RIVER
4.75 MI W ILL-1, White, IL
Built 1971 Load: 34.7 t ADT: 6,100
I 64 WB
FairOver: LITTLE WABASH RIVER
4.75 MI W ILL-1, White, IL
Built 1971 Load: 34.7 t ADT: 6,100
HOLLY RD.
FairOver: CATTAIL CREEK
1 MI S OF FULTON, Whiteside, IL
Built 1988 Load: 34.7 t ADT: 450
YAGER ROAD
FairOver: BR OF ROCK RIVER
1.5 MI NE LYNDON, Whiteside, IL
Built 1987 Load: 34.7 t ADT: 125
FULFS RD
FairOver: SUGAR CREEK
2.5 MI N. STERLING, Whiteside, IL
Built 1965 Load: 34.7 t ADT: 900
KENNEDY RD.
FairOver: FORKED CREEK
2.1 M W OF WIL. C RD, Will, IL
Built 1988 Load: 34.7 t ADT: 175
Showing 10,701-10,750 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.