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
FAU 7560(CLINTON R
FairOver: SUGAR CREEK
1 MI E PARIS ON CH 2, Edgar, IL
Built 1965 Load: 31.4 t ADT: 1,450
TR 363
FairOver: WHISKEY CR
2.59 MI E OF ILL 49, Iroquois, IL
Built 1975 Load: 31.4 t ADT: 100
IL 56
FairOver: INDIAN CREEK
1.8 M E OF IL 25, Kane, IL
Built 1941 Load: 31.4 t ADT: 17,900
MOLITOR AVE
FairOver: INDIAN CREEK
.3 MI E FARNSWORTH, Kane, IL
Built 1977 Load: 31.4 t ADT: 6,300
TR 183
FairOver: DEER CREEK
5.5 MI SW OF ST ANNE, Kankakee, IL
Built 1974 Load: 31.4 t ADT: 175
TR 21A
FairOver: TRIB TO POPE CREEK
NE-17-T13NR2E, Knox, IL
Built 1966 Load: 31.4 t ADT: 10
CO RD 19
FairOver: LITTLE VERMILION
N 3973,E 650, LaSalle, IL
Built 1956 Load: 31.4 t ADT: 600
TR 40
FairOver: TRIB VERMILLION R
3050 N, 700 E, Livingston, IL
Built 1957 Load: 31.4 t ADT: 350
TR 237A
FairOver: CREEK
2675 E, 600 N, Livingston, IL
Built 1930 Load: 31.4 t ADT: 50
TR 135
FairOver: FELKY SLOUGH
2355 E, 1700 N, Livingston, IL
Built 1983 Load: 31.4 t ADT: 50
TR 39
FairOver: CLEAR CK
2.5 MI E ATLANTA, Logan, IL
Built 1972 Load: 31.4 t ADT: 50
TR 197
FairOver: N FORK LAKE FORK C
2 MI E 2MIS CHESTNUT, Logan, IL
Built 1973 Load: 31.4 t ADT: 50
IL 105(FAP 714)
FairOver: SPRING CREEK
SOUTH SIDE DR DECATU, Macon, IL
Built 1980 Load: 31.4 t ADT: 9,800
I-55/70 WB
FairOver: A&SRR
0.75 mi E of IL 111, Madison, IL
Built 1980 Load: 31.4 t ADT: 26,800
IL 16
FairOver: S. FORK SANGAMON R.
2.4M E ELM - NOKOMIS, Montgomery, IL
Built 1923 Load: 31.4 t ADT: 1,450
SMITH ROAD/MSS 099
FairOver: SO BR HILLSBORO LK
N EDGE SCHRAM CITY, Montgomery, IL
Built 1900 Load: 31.4 t ADT: 1,000
EAGLE POINT RD
FairOver: BUFFALO CREEK
0.5 MI W POLO, Ogle, IL
Built 1962 Load: 31.4 t ADT: 375
ILL 106
FairOver: E BRANCH KISER CREEK
6.2MI SE BARRY, Pike, IL
Built 1924 Load: 31.4 t ADT: 1,600
ILL 146
FairOver: LUSK CREEK
0.1 MI N GOLCONDA, Pope, IL
Built 1964 Load: 31.4 t ADT: 2,150
TR 94
FairOver: PLUM CREEK
2.5 M NE EVANSVILLE, Randolph, IL
Built 1978 Load: 31.4 t ADT: 50
44 TH AVE DR
FairOver: DRAINAGE DITCH
E OF 16 ST SOUTHPARK, Rock Island, IL
Built 1973 Load: 31.4 t ADT: 5,700
ILL 100
FairOver: WOLF RUN CREEK
AT BLUFFS, Scott, IL
Built 1931 Load: 31.4 t ADT: 2,050
TR 323
FairOver: MITCHELL CREEK
1.0 MI S LAKEWOOD, Shelby, IL
Built 1986 Load: 31.4 t ADT: 50
ILL 177
FairOver: RAYHILLS SLOUGH
3.1 M E JCT ILL 4, St. Clair, IL
Built 1920 Load: 31.4 t ADT: 2,000
FAI 64 EB
FairOver: HARDING DITCH
1.04 MI E OF ILL 111, St. Clair, IL
Built 1968 Load: 31.4 t ADT: 40,050
WINSLOW ROAD
FairOver: PECATONICA RIVER
WINSLOW, Stephenson, IL
Built 1941 Load: 31.4 t ADT: 1,200
ILL 29
FairOver: MACKINAW R OVERFLOW
2 MI N GREENVALLEY, Tazewell, IL
Built 1921 Load: 31.4 t ADT: 2,250
CH 26
FairOver: YANKEE BRANCH
3.0 MI W HUMRICK, Vermilion, IL
Built 1900 Load: 31.4 t ADT: 250
TR 238
FairOver: STREAM
3 MI SW HOOPESTN, Vermilion, IL
Built 1969 Load: 31.4 t ADT: 50
FAS RT 835
FairOver: ELKHORN CREEK
2.2 MI NE OF OAKDALE, Washington, IL
Built 1940 Load: 31.4 t ADT: 1,000
FAS-2816
FairOver: LITTLE WABASH RIVER
3.0 MI N GOLDEN GATE, Wayne, IL
Built 1956 Load: 31.4 t ADT: 75
FAS 2812
FairOver: POND CREEK DR DITCH
4 MI SE FAIRFIELD, Wayne, IL
Built 1909 Load: 31.4 t ADT: 125
IL 78
FairOver: DRAINAGE DITCH
0.2 MI. N. OF US 30, Whiteside, IL
Built 1996 Load: 31.4 t ADT: 1,050
TR 338
FairOver: CREEK
2.4 MI N W CAMP POIN, Adams, IL
Built 1968 Load: 31.8 t ADT: 100
TR 51
FairOver: SAMMONS CREEK
1 MI EAST OF THEBES, Alexander, IL
Built 1989 Load: 31.8 t ADT: 100
CH-12 (FAS-732)
FairOver: LOCUST CREEK
4.5 MI W PANA, Christian, IL
Built 1920 Load: 31.8 t ADT: 500
JAMESTOWN RD/CH 11
FairOver: QUARRY DITCH
NO HOPPY HOLTGRAVE, Clinton, IL
Built 1972 Load: 31.8 t ADT: 1,450
TR 118
FairOver: KICKAPOO CREEK
1.5 MI S OF THE COLE, Coles, IL
Built 1987 Load: 31.8 t ADT: 200
CRAWFORD AVE
FairOver: CAL SAG CHANNEL
1 M N I294 P26, Cook, IL
Built 1931 Load: 31.8 t ADT: 21,000
TOUHY AVE
FairOver: DES PLAINES RIVER
0.3 M E I-294, Cook, IL
Built 1955 Load: 31.8 t ADT: 27,600
IL 83 (SIBLEY BLV
FairOver: RR - UP
1.5 M W I-94, Cook, IL
Built 1936 Load: 31.8 t ADT: 34,200
COLUMBUS DR
FairOver: PARKING FACILITIES
300 E & 100S TO 150N, Cook, IL
Built 1980 Load: 31.8 t ADT: 18,600
I-294 NB
FairOver: CAL SAG CANAL
1 M SE ILL 50 P26, Cook, IL
Built 1958 Load: 31.8 t ADT: 66,750
TR-203
FairOver: BIG CREEK
2.5 MI SE OBLONG, Crawford, IL
Built 1977 Load: 31.8 t ADT: 100
I-74 (EB)
FairOver: Canadian National Railwa
N FARMER CITY, De Witt, IL
Built 1970 Load: 31.8 t ADT: 10,600
I-74 (WB)
FairOver: Canadian National Railwa
N FARMER CITY, De Witt, IL
Built 1970 Load: 31.8 t ADT: 10,600
TR 216
FairOver: FRIENDS CREEK
3 MI SW OF WELDON, De Witt, IL
Built 1974 Load: 31.8 t ADT: 100
TR 159 A
FairOver: STREAM
3 MI ENE WELDON, De Witt, IL
Built 1974 Load: 31.8 t ADT: 50
TR-44
FairOver: BROCKETT CREEK
3.5 MI SE ALTAMONT, Effingham, IL
Built 1909 Load: 31.8 t ADT: 100
FAI-70 EB
FairOver: VANDALIA RR
.5 MI E ILL-185, Fayette, IL
Built 1964 Load: 31.8 t ADT: 11,300
Showing 6,951-7,000 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.