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 213
GoodOver: BEAR CREEK
3 N OF PALMER, Christian, IL
Built 1987 Load: 39.5 t ADT: 75
FAS 686(CH 6)
GoodOver: MILL CREEK
2 MI NW MILL CR PARK, Clark, IL
Built 1991 Load: 39.5 t ADT: 375
FAU-8521
GoodOver: CSX TRANS INC
EAST EDGE FLORA, Clay, IL
Built 1986 Load: 39.5 t ADT: 2,900
FAP 328 (US 45)
GoodOver: SEMINARY CK OVERFLOW
4 MI S JCT US 50, Clay, IL
Built 2009 Load: 39.5 t ADT: 2,250
OLD LEMONT ROAD
GoodOver: DESPLAINES RIVER
NORTH LEMONT, Cook, IL
Built 1985 Load: 39.5 t ADT: 1,800
REIGEL RD
GoodOver: BUTTERFIELD CREEK
0.7 M S 187TH, Cook, IL
Built 2004 Load: 39.5 t ADT: 8,000
BARKER AVE
GoodOver: SALT CREEK
0.4 N 62/.6 E 53 P5, Cook, IL
Built 1970 Load: 39.5 t ADT: 3,550
US 51 BUSN(FAP 708
GoodOver: COON CREEK
0.18 M S OF CLINTON, De Witt, IL
Built 1986 Load: 39.5 t ADT: 3,500
US 51 BUSN(FAP 708
GoodOver: STREAM
1 MI N OF CLINTON, De Witt, IL
Built 1986 Load: 39.5 t ADT: 2,800
IL 64 FAP 17
GoodOver: DRAINAGE DITCH
1.1 MI. W. SYCAMORE, DeKalb, IL
Built 2000 Load: 39.5 t ADT: 7,650
US 34
GoodOver: RR - CN
1.5 M SW OF IL 59, DuPage, IL
Built 2014 Load: 39.5 t ADT: 30,100
IL 49(FAP 836)
GoodOver: CATFISH CREEK
2.5 MI N IL 133, Edgar, IL
Built 2023 Load: 39.5 t ADT: 1,200
IL 49(FAP 836)
GoodOver: STREAM
1.2 MI N OF US 36, Edgar, IL
Built 2004 Load: 39.5 t ADT: 1,000
TR-44
GoodOver: BIG CREEK
2.5 MI SE ALTAMONT, Effingham, IL
Built 1987 Load: 39.5 t ADT: 275
TR-267
GoodOver: BISHOP CREEK
4.25 MI WNW EBERLE, Effingham, IL
Built 1994 Load: 39.5 t ADT: 150
TR 310 A
GoodOver: LITTLE SALT CREEK
2 MI E ELLIOTSTOWN, Effingham, IL
Built 2005 Load: 39.5 t ADT: 50
FAP 322 (US 51)
GoodOver: Stream
3 Mi. S. Vandalia, Fayette, IL
Built 2021 Load: 39.5 t ADT: 3,500
TR 177
GoodOver: Bolt Creek
3.5 Mi. SE Ramsey, Fayette, IL
Built 2021 Load: 39.5 t ADT: 50
IL 54 /FAP 71A
GoodOver: DRUMMER CREEK
.04 mi W IL9 & 47, Ford, IL
Built 1992 Load: 39.5 t ADT: 1,150
IL 14
GoodOver: CARLTON BRANCH
0.4 MI W HAMILTON CO, Franklin, IL
Built 2021 Load: 39.5 t ADT: 2,050
US 24/IL 100
GoodOver: SPOON RIVER TRIB
.22 MI N US 136, Fulton, IL
Built 2006 Load: 39.5 t ADT: 1,900
FAS 452-CH 2
GoodOver: COAL CREEK
W1/2-27-T8NR2E, Fulton, IL
Built 2022 Load: 39.5 t ADT: 325
ILL 1 FAP 782
GoodOver: EAGLE CREEK
GIBSONIA, Gallatin, IL
Built 1993 Load: 39.5 t ADT: 1,850
TR 149A
GoodOver: UNNAMED STREAM
NE CORP LIMIT S'TOWN, Gallatin, IL
Built 1980 Load: 39.5 t ADT: 225
Eldred Hillview Ro
GoodOver: BUCKS BRANCH
3.6 MI N OF HILLVIEW, Greene, IL
Built 1957 Load: 39.5 t ADT: 350
BRISBIN RD FAU401
GoodOver: Valley Run Creek
.29 MI S. MINOOKA RD, Grundy, IL
Built 1989 Load: 39.5 t ADT: 1,100
FAS-1899
GoodOver: TRIB WHEELER CREEK
2MI S THACKERY, Hamilton, IL
Built 1986 Load: 39.5 t ADT: 400
GRANGE RD (FAS 122
GoodOver: BLUE JOINT DITCH
3 MI. NE. OF GENESEO, Henry, IL
Built 1991 Load: 39.5 t ADT: 750
US 45
GoodOver: DRAINAGE DITCH
0.39 MI S OF US 24, Iroquois, IL
Built 2004 Load: 39.5 t ADT: 3,000
IL 13 EB
GoodOver: CRAB ORCHARD CREEK
1MI W REED STA RD, Jackson, IL
Built 2021 Load: 39.5 t ADT: 25,800
IL 3
GoodOver: MATUSKY CREEK
4.8 MI S RANDOLPH CO, Jackson, IL
Built 2012 Load: 39.5 t ADT: 2,150
IL 15
GoodOver: ELK HORN CREEK
4.4 MI E WASH CO LN, Jefferson, IL
Built 2020 Load: 39.5 t ADT: 3,100
ILL 16
GoodOver: PHILS CREEK E BR
5.6 M W JCT ILL 111, Jersey, IL
Built 1978 Load: 39.5 t ADT: 2,550
IL 78
GoodOver: DRAINAGE DITCH
4 MI N CARROLL CO LN, Jo Daviess, IL
Built 1992 Load: 39.5 t ADT: 800
US ROUTE 20
GoodOver: YELLOW CREEK TRIB
1.3 MI E JCT IL 78, Jo Daviess, IL
Built 2005 Load: 39.5 t ADT: 5,650
CH-10 (N Fiedler R
GoodOver: Wolf Creek
SW CORNER OF WARREN, Jo Daviess, IL
Built 1956 Load: 39.5 t ADT: 250
CREAL SPRINGS ROAD
GoodOver: WAGON CREEK
3MI N OF TUNNEL HILL, Johnson, IL
Built 2015 Load: 39.5 t ADT: 150
IL 72
GoodOver: TYLER CREEK
0.11 M E OF IL 47, Kane, IL
Built 2015 Load: 39.5 t ADT: 11,900
COOMBS ROAD
GoodOver: DM&E RR
I N.HIGHLAND RD, Kane, IL
Built 1984 Load: 39.5 t ADT: 5,450
IL 47
GoodOver: Drainage Ditch
0.05 M N of US 52, Kendall, IL
Built 2018 Load: 39.5 t ADT: 7,800
SHERIDAN ROAD
GoodOver: MISSION CREEK
0.7 MI N OF US 52, LaSalle, IL
Built 1930 Load: 39.5 t ADT: 1,700
FAS 1274
GoodOver: SOMONAUK CREEK
N 48TH,E 2725, LaSalle, IL
Built 1966 Load: 39.5 t ADT: 3,100
IL 26
GoodOver: 5 MILE BRANCH
1.2 MI. N. OF UA 30, Lee, IL
Built 2000 Load: 39.5 t ADT: 2,050
CH 9
GoodOver: Trib to N Fork Verm
1. mile E Charlottee, Livingston, IL
Built 2014 Load: 39.5 t ADT: 100
US 136
GoodOver: PRAIRIE CREEK
0.4 MI W I 55/US 136, Logan, IL
Built 2004 Load: 39.5 t ADT: 2,350
FAP 717 (IL 10)
GoodOver: Ditch
.8 mi E Mason Co Ln, Logan, IL
Built 2023 Load: 39.5 t ADT: 1,400
ILL 143
GoodOver: OLD CAHOKIA CR CHNNL
.25 M W JCT 143-159, Madison, IL
Built 1954 Load: 39.5 t ADT: 7,950
IL 162
GoodOver: CAHOKIA CANAL
.8MI EAST OF I-255, Madison, IL
Built 1996 Load: 39.5 t ADT: 5,350
GLEN CROS/FAU 8899
GoodOver: JUDYS BRANCH
100' W OF BIKE TRAIL, Madison, IL
Built 2001 Load: 39.5 t ADT: 3,600
US 51 (FAP 322)
GoodOver: PRAIRIE CREEK
S EDGE SANDOVAL, Marion, IL
Built 1982 Load: 39.5 t ADT: 3,900
Showing 23,301-23,350 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |