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
TR 492 11.25E
FairOver: CLEAR CREEK
3.0 S OF DAWSON, Sangamon, IL
Built 1971 Load: 26.6 t ADT: 250
IL 15 / Missouri A
FairOver: A&SRR
0.50 mi NW of IL 163, St. Clair, IL
Built 1980 Load: 26.6 t ADT: 13,800
CH 68 LENZBURG EAS
FairOver: BRANCH OF MUD CREEK
0.1MI WEST ILL RTE 4, St. Clair, IL
Built 1972 Load: 26.6 t ADT: 250
FAI 64 EB
FairOver: POND CREEK BRANCH
6 MI E US-45 INT, Wayne, IL
Built 1974 Load: 26.6 t ADT: 6,000
FAI-64 WB
FairOver: POND CREEK BRANCH
6 MI E US-45 INT, Wayne, IL
Built 1974 Load: 26.6 t ADT: 6,000
TR-340
FairOver: CROOKED CREEK
1.6 MI S CROSSVILLE, White, IL
Built 1957 Load: 26.6 t ADT: 25
FENTON ROAD
FairOver: BRANCH ROCK CREEK
1.3 MI NW FENTON, Whiteside, IL
Built 1968 Load: 26.6 t ADT: 550
IMPERIAL OAKS DR
FairOver: SPRING CREEK
0.2 MI N SPRINGBROOK, Winnebago, IL
Built 1967 Load: 26.6 t ADT: 775
TR 25
FairOver: SNAG CR
0.5 MI S WASHBURN, Woodford, IL
Built 1966 Load: 26.6 t ADT: 200
TR 92A
FairOver: WALNUT CR
3 MI SE METAMORA, Woodford, IL
Built 1956 Load: 26.6 t ADT: 10
TR 109 DIX
FairOver: BLACKFORD SLOUGH
870E,100N, Ford, IL
Built 1969 Load: 26.7 t ADT: 50
SCENIC BLUFF RD
FairOver: NO NAME CRK
SW CORN SEC29, Carroll, IL
Built 1945 Load: 26.9 t ADT: 75
E LIVINGGOOD ROAD
FairOver: OTTER CREEK
2.5MI.NW MILLEDGEVIL, Carroll, IL
Built 1958 Load: 26.9 t ADT: 50
TR 107
FairOver: STREAM
2.8 MI SW THOMASBORO, Champaign, IL
Built 1974 Load: 26.9 t ADT: 75
FAS 787
FairOver: EAST FORK KASKASKIA
1.5 S FAYETTE CO LIN, Clinton, IL
Built 1965 Load: 26.9 t ADT: 300
US 45 (FAP 824)
FairOver: RILEY CREEK
1.0 MI N OF MATTOON, Coles, IL
Built 1959 Load: 26.9 t ADT: 3,250
I- 57 SB
FairOver: RR - EJ&E
1 M S US 30, Cook, IL
Built 1966 Load: 26.9 t ADT: 32,050
I- 57 NB
FairOver: RR - EJ&E
1 M S US 30, Cook, IL
Built 1966 Load: 26.9 t ADT: 32,050
I-294 (TRISTATE) S
FairOver: CHICAGO SAN.CANAL
0.3 M W OFUS 45 P-10, Cook, IL
Built 1958 Load: 26.9 t ADT: 70,400
ASHLAND AVE
FairOver: N BR CHICAGO RIVER
2201 N & 1600 W, Cook, IL
Built 1936 Load: 26.9 t ADT: 26,200
MCGIRR RD
FairOver: SO BR KISHWAUKEE RV
1300N 540E, DeKalb, IL
Built 1954 Load: 26.9 t ADT: 100
SLEEPY HOLLOW RD
FairOver: INDIAN CREEK
520N 470E, DeKalb, IL
Built 1957 Load: 26.9 t ADT: 50
FAI-70 EB
FairOver: CSXT RR
1.5 MI W BROWNSTN IN, Fayette, IL
Built 1947 Load: 26.9 t ADT: 11,350
WALL 1100N
FairOver: STREAM
1570E,1100N, Ford, IL
Built 1970 Load: 26.9 t ADT: 50
TR 76 PATTON
FairOver: THE BIG FOUR
2100E,30N, Ford, IL
Built 1967 Load: 26.9 t ADT: 50
TR 52B WALL
FairOver: WALL TOWN DR DITCH
880N 1400E, Ford, IL
Built 1973 Load: 26.9 t ADT: 25
ILL 14
FairOver: SUGAR CAMP CREEK
3.9 MI W HAMILTON CO, Franklin, IL
Built 1923 Load: 26.9 t ADT: 1,500
IL 267
FairOver: APPLE CREEK
8.6 M N GREENFIELD, Greene, IL
Built 1939 Load: 26.9 t ADT: 2,150
FAI 57 NB
FairOver: SPRING CREEK
2.41 MI S ONARGA INT, Iroquois, IL
Built 1968 Load: 26.9 t ADT: 8,750
TR 27
FairOver: TRIB LANGAN CREEK
1.5M N 4.5 W CLIFTON, Iroquois, IL
Built 1970 Load: 26.9 t ADT: 50
TR 331A
FairOver: TRIB MUD CREEK
2.5 MI E OF ILL 1, Iroquois, IL
Built 1960 Load: 26.9 t ADT: 75
CH-5
FairOver: BIG MUDDY
0.5 MI W LATONA, Jasper, IL
Built 1964 Load: 26.9 t ADT: 350
CH 51
FairOver: MARSHALL SL
3.62 MI NE MANTENO, Kankakee, IL
Built 1966 Load: 26.9 t ADT: 625
CH 35
FairOver: TRAIL CR
3 MI NE CHEBANSE, Kankakee, IL
Built 1967 Load: 26.9 t ADT: 250
TR 113
FairOver: CREEK
2.5MI NE HOPKINSPARK, Kankakee, IL
Built 1969 Load: 26.9 t ADT: 125
TR 175
FairOver: SPRING CREEK
N 38TH E 195, LaSalle, IL
Built 1975 Load: 26.9 t ADT: 100
CH 12 ATKINSON RD
FairOver: GREEN RV DRAINAGE DI
2.6 N OF BUREAU CO, Lee, IL
Built 1960 Load: 26.9 t ADT: 10
CH 1 LOST NATION R
FairOver: CHAMBERLAIN CREEK
1.7 MI S OF OGLE CO, Lee, IL
Built 1963 Load: 26.9 t ADT: 1,900
TR 19
FairOver: TRIB W FORK MAZON R
2370 E, 3100 N, Livingston, IL
Built 1940 Load: 26.9 t ADT: 75
TR 244
FairOver: DRAINAGE DITCH
2670 N, 2900 E, Livingston, IL
Built 1964 Load: 26.9 t ADT: 50
TR 258A
FairOver: DRAINAGE DITCH
1410 N, 3100 E, Livingston, IL
Built 1963 Load: 26.9 t ADT: 75
CH 15
FairOver: PIKE CK
2.5 MI S MIDDLETOWN, Logan, IL
Built 1963 Load: 26.9 t ADT: 450
OLD US 51 (FAS 179
FairOver: PRAIRIE CREEK
.2 MI S SANDOVAL, Marion, IL
Built 1954 Load: 26.9 t ADT: 1,050
FAS-1793
FairOver: CROOKED CREEK
3 MI S ODIN, Marion, IL
Built 1987 Load: 26.9 t ADT: 625
TR 111
FairOver: HENLINE DITCH
2.8 MI NW COLFAX, McLean, IL
Built 1973 Load: 26.9 t ADT: 50
TR 258
FairOver: KICKAPOO CR
1 MI NE HEYWORTH, McLean, IL
Built 1961 Load: 26.9 t ADT: 100
FT JESSE RD-FAU 63
FairOver: BR SUGAR CREEK
2.0 MI N. BUS55 & 9, McLean, IL
Built 1985 Load: 26.9 t ADT: 15,600
TR 253
FairOver: SNAKE CREEK
CTR-25-T13NR4W, Mercer, IL
Built 1958 Load: 26.9 t ADT: 25
TR 154 A
FairOver: WHITLEY CREEK
3.3 MI N OF GAYS, Moultrie, IL
Built 1909 Load: 26.9 t ADT: 25
WOODLAWN RD
FairOver: KILBUCK CREEK
1.5 MI N CRESTON, Ogle, IL
Built 1960 Load: 26.9 t ADT: 250
Showing 6,151-6,200 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.