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
PRAIRIE ROAD
FairOver: FULLERS CR
AT RT 20 BYPASS, Winnebago, IL
Built 1965 Load: 34.7 t ADT: 1,550
OLD RIVER RD
FairOver: BLACKS CREEK
0.7 MI N LATHAM RD, Winnebago, IL
Built 1962 Load: 34.7 t ADT: 2,850
CH 3
FairOver: WALNUT CREEK
1 M SE OF METAMORA, Woodford, IL
Built 1998 Load: 34.7 t ADT: 225
IL 96
FairOver: ROCK CREEK
2M S IL 61 IN URSA, Adams, IL
Built 1971 Load: 35.0 t ADT: 4,300
TR 0300
FairOver: TOURMEAL CRK
2.0 MI W LIBERTY, Adams, IL
Built 1900 Load: 35.0 t ADT: 150
TR 0440
FairOver: BEAR CREEK
1.6 MI S GOLDEN, Adams, IL
Built 1972 Load: 35.0 t ADT: 75
CH 12
FairOver: MCKEE CREEK
2.5 MI S COLUMBUS, Adams, IL
Built 1931 Load: 35.0 t ADT: 725
FAS 943
FairOver: WOLF CREEK
0.7 MI S OF DISWOOD, Alexander, IL
Built 1982 Load: 35.0 t ADT: 650
BIG CUT ROAD
FairOver: JOHNSON CREEK
0.3 MI NW ARGO FAY, Carroll, IL
Built 1978 Load: 35.0 t ADT: 125
RISING ROAD
FairOver: COPPER SLOUGH
2 MI E OF CHAMPAIGN, Champaign, IL
Built 1975 Load: 35.0 t ADT: 1,200
FAU 7110(BRADLEY A
FairOver: STREAM
BRADLEY W OF MATTIS, Champaign, IL
Built 1972 Load: 35.0 t ADT: 15,600
TR-396
FairOver: CREEK
1.7 MI S WENDELIN, Clay, IL
Built 1970 Load: 35.0 t ADT: 50
US 14 (PETERSON AV
FairOver: N SHORE CHANNEL
0.1 M W US 41, Cook, IL
Built 1934 Load: 35.0 t ADT: 25,200
107TH ST
FairOver: CROOKED CREEK
0.25 M W of US 45, Cook, IL
Built 1925 Load: 35.0 t ADT: 6,500
31ST ST
FairOver: SALT CREEK
0.5 M W US 45, Cook, IL
Built 1927 Load: 35.0 t ADT: 18,200
IL 171 NB
FairOver: RR - BNSF
1.0 M W OF I-55, Cook, IL
Built 1964 Load: 35.0 t ADT: 40,100
IL 50 NB CICERO A
FairOver: RR - BRC
0.2 M S 67TH ST, Cook, IL
Built 1982 Load: 35.0 t ADT: 57,400
S CARONDOLET AV
FairOver: WOLF LAKE CHANNEL
12650 S & 3050 E, Cook, IL
Built 1998 Load: 35.0 t ADT: 1,550
TR 45
FairOver: N FORK SALT CREEK
8 MI W FARMER CITY, De Witt, IL
Built 1900 Load: 35.0 t ADT: 50
TR 52
FairOver: LONG POINT CREEK
4 MI NE WAYNESVILLE, De Witt, IL
Built 1978 Load: 35.0 t ADT: 50
FAI-57 NB
FairOver: DISMAL CREEK
5.5 MI N FARINA INT, Fayette, IL
Built 1970 Load: 35.0 t ADT: 9,450
TR-530
FairOver: Trib. Dismal Creek
4.5M N Farina, Fayette, IL
Built 1935 Load: 35.0 t ADT: 50
ILL 41
FairOver: CEDAR CREEK
2 MI N. OF AVON, Fulton, IL
Built 1982 Load: 35.0 t ADT: 1,850
Hillview Eldred Ro
FairOver: KERSEY CREEK
2.2 M N OF HILLVIEW, Greene, IL
Built 1957 Load: 35.0 t ADT: 350
TR-217
FairOver: TAYLOR CREEK
2.4 MI SE GREENFIELD, Greene, IL
Built 1982 Load: 35.0 t ADT: 150
GONNAM RD TR-32
FairOver: WAUPECON CR
.14 MI N PRAIRIE RD, Grundy, IL
Built 1980 Load: 35.0 t ADT: 150
GRINTER RD TR-129
FairOver: BREWSTER RUN
.26 MI E OLD MAZ RD, Grundy, IL
Built 1979 Load: 35.0 t ADT: 50
VERONA RD TR-74A
FairOver: JOHNNY RUN
.16 MI S BURKHART RD, Grundy, IL
Built 1977 Load: 35.0 t ADT: 225
FAP-853 (ILL-14)
FairOver: SULLIVAN BRANCH
.8 MI E FRANK CO LN, Hamilton, IL
Built 1985 Load: 35.0 t ADT: 2,100
TR-273
FairOver: TEN MILE CREEK
3 MI SE MCLEANSBORO, Hamilton, IL
Built 1983 Load: 35.0 t ADT: 75
TR 438
FairOver: MUD CREEK
3.5 S WEST POINT, Hancock, IL
Built 1936 Load: 35.0 t ADT: 50
US 150
FairOver: EDWARDS RIVER
1.6 MI S OF ILL 81, Henry, IL
Built 1981 Load: 35.0 t ADT: 2,300
FAI-57 SB
FairOver: Sugar Creek
0.96 MI S GILMAN INT, Iroquois, IL
Built 1967 Load: 35.0 t ADT: 8,200
FAI-57 NB
FairOver: Sugar Creek
0.95 MI S GILMAN INT, Iroquois, IL
Built 1967 Load: 35.0 t ADT: 8,200
TR 343A
FairOver: STREAM
.5 MI W IND. ST LINE, Iroquois, IL
Built 1965 Load: 35.0 t ADT: 50
CH 9/FAS 334
FairOver: TRIB OF SUGAR CREEK
1MI NW OF STOCKLAND, Iroquois, IL
Built 1997 Load: 35.0 t ADT: 100
US 51
FairOver: SIX MILE CREEK
0.3 MI S PERRY CO, Jackson, IL
Built 1954 Load: 35.0 t ADT: 6,150
FAS 1916-MUDLINE R
FairOver: RATTLESNAKE CR TRIB
0.78 MI N IL 4, Jackson, IL
Built 1998 Load: 35.0 t ADT: 1,350
TOWNSHIP RD NO 146
FairOver: BR OF HELLS CREEK
1 MI SO SCHAPVILLE, Jo Daviess, IL
Built 1964 Load: 35.0 t ADT: 125
US 30
FairOver: WELCH CREEK
3.2 M W OF IL 47, Kane, IL
Built 1927 Load: 35.0 t ADT: 4,950
I-88
FairOver: LAKE RUN
2.5 MI E. OF US 12, Kane, IL
Built 1972 Load: 35.0 t ADT: 31,700
KESLINGER RD
FairOver: UP RAILROAD
1W OF RANDALL RD, Kane, IL
Built 2000 Load: 35.0 t ADT: 17,200
ILL 17 EB/FAP 330
FairOver: KANKAKEE RIV.
4.4 M.E.OF KANKAKEE, Kankakee, IL
Built 1964 Load: 35.0 t ADT: 11,900
ILL 17 WB/FAP 330
FairOver: KANKAKEE RIV.
4.4 M E OF KANKAKEE, Kankakee, IL
Built 1964 Load: 35.0 t ADT: 11,900
US 45 & 52
FairOver: S BR OF ROCK CR
1.5 M S MANTENO RD, Kankakee, IL
Built 1976 Load: 35.0 t ADT: 5,650
TR 157
FairOver: REDDICK RUN
3.5 MI SE OF REDDICK, Kankakee, IL
Built 1972 Load: 35.0 t ADT: 250
TR 3
FairOver: ROCK CR.
1 MI W I-57 WILL CO., Kankakee, IL
Built 1980 Load: 35.0 t ADT: 1,300
CATON FARM RD CH 2
FairOver: AUX SABLE CK
1.5 MI E OF ILL 47, Kendall, IL
Built 1978 Load: 35.0 t ADT: 1,650
I 39 & US 51 SB
FairOver: STEWARD CREEK
0.25 MI S PERRY ROAD, Lee, IL
Built 1984 Load: 35.0 t ADT: 9,550
I 39 & US 51 NB
FairOver: STEWARD CREEK
0.25 MI S PERRY ROAD, Lee, IL
Built 1984 Load: 35.0 t ADT: 9,550
Showing 10,751-10,800 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.