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 RTE 52
GoodOver: LISBON CR
0.55 MI E OF ILL 47, Kendall, IL
Built 1982 Load: 35.3 t ADT: 3,500
ILL 71
GoodOver: W BR HOLLENBACK CR
5 MI SW OF ILL 47, Kendall, IL
Built 1997 Load: 35.3 t ADT: 6,450
US 45
GoodOver: MILBURN CR
1M N of Sand Lake Rd, Lake, IL
Built 2019 Load: 35.3 t ADT: 6,000
TR 19
GoodOver: INDIAN CREEK
N 47TH E 1360, LaSalle, IL
Built 1930 Load: 35.3 t ADT: 100
TR 332 A
GoodOver: OTTER CREEK
E 20TH N 1510, LaSalle, IL
Built 1930 Load: 35.3 t ADT: 50
TR 503
GoodOver: OTTER CREEK
N 16TH E 2430, LaSalle, IL
Built 1935 Load: 35.3 t ADT: 1,700
TR 235
GoodOver: LITTLE BONPAS CREEK
5.5 MI S SUMNER, Lawrence, IL
Built 2000 Load: 35.3 t ADT: 75
CO HWY 34
GoodOver: CREEK
1.5 MI N OF MANVILLE, Livingston, IL
Built 2022 Load: 35.3 t ADT: 225
FAS 355, CH 16
GoodOver: WATERWAY
2670N,300E, Livingston, IL
Built 1991 Load: 35.3 t ADT: 600
FAS 1731
GoodOver: MACOUPIN CREEK
3.5MI S CARLINVILLE, Macoupin, IL
Built 1994 Load: 35.3 t ADT: 650
TR-414A
GoodOver: E FK KASKASKIA RIVER
2 MI NE KINMUNDY, Marion, IL
Built 1984 Load: 35.3 t ADT: 50
TR-13
GoodOver: NORTH FORK CREEK
3.5 MI NW KINMUNDY, Marion, IL
Built 1985 Load: 35.3 t ADT: 25
TR-317
GoodOver: SOUTH CREEK
1.5 MI NE CARTTER, Marion, IL
Built 1985 Load: 35.3 t ADT: 75
ILL 17
GoodOver: JUDD CREEK
.5 MI EAST OF IL 117, Marshall, IL
Built 1990 Load: 35.3 t ADT: 1,650
TR-142 Mt.Sterling
GoodOver: Trib. to Crenshaw Cr
4 MI E OF BROOKPORT, Massac, IL
Built 2019 Load: 35.3 t ADT: 225
US 14
GoodOver: RUSH CREEK
1.2 S HARVARD, McHenry, IL
Built 1984 Load: 35.3 t ADT: 15,200
IL 31
GoodOver: DUTCH CREEK
6.2 M S OF US 12, McHenry, IL
Built 1978 Load: 35.3 t ADT: 23,400
ALLENDALE ROAD
GoodOver: BR NIPPERSINK CR
1.5 E IL 47, McHenry, IL
Built 2009 Load: 35.3 t ADT: 750
IL RT. 9
GoodOver: INTER. STREAM
2.17 MI. E.OF IL 122, McLean, IL
Built 2004 Load: 35.3 t ADT: 3,600
IL 78 / MAIN ST.
GoodOver: MAUVAISE TERRE CR
.6M N WALNUT-J"VILLE, Morgan, IL
Built 1927 Load: 35.3 t ADT: 2,800
FAU-6647 (NMOOR RD
GoodOver: BIG HOLLOW CR.
CTR-18-T9NR8E, Peoria, IL
Built 1964 Load: 35.3 t ADT: 7,200
TR 121
GoodOver: LAKE FORK
2.3 MI SE MONTICELLO, Piatt, IL
Built 1978 Load: 35.3 t ADT: 50
CH 11(FAS 254)
GoodOver: CLEAR CREEK
NE-9-T31NR1W, Putnam, IL
Built 2008 Load: 35.3 t ADT: 700
TR 139
GoodOver: STREAM
2.5 MI W CLAREMONT, Richland, IL
Built 2005 Load: 35.3 t ADT: 100
FAS1619/CH18
GoodOver: LICK CREEK
2.5 MI S CURRAN, Sangamon, IL
Built 1988 Load: 35.3 t ADT: 1,950
TR 74
GoodOver: S WOLF RUN CREEK
1.5 MI S BLUFFS, Scott, IL
Built 1995 Load: 35.3 t ADT: 25
FAP 762(IL 32)
GoodOver: STREAM
1 MI N OF WINDSOR, Shelby, IL
Built 1994 Load: 35.3 t ADT: 2,700
IL 13
GoodOver: TRIB TO KASKASKIA RV
2.2M N NEW ATHENS, St. Clair, IL
Built 1996 Load: 35.3 t ADT: 5,450
US 20WB
GoodOver: SUMNER CREEK
1.2 MI W WINN. CO LN, Stephenson, IL
Built 1994 Load: 35.3 t ADT: 12,700
N EGGERT ROAD
GoodOver: ROCK RUN CREEK
1.0 MI N OF ILL 75, Stephenson, IL
Built 1982 Load: 35.3 t ADT: 50
IL 127
GoodOver: OVER NORTH CREEK
4.0 M N NASHVILLE, Washington, IL
Built 1996 Load: 35.3 t ADT: 3,900
IL 40
GoodOver: BRANCH DITCH
2.2 MI N DEER GROVE, Whiteside, IL
Built 1996 Load: 35.3 t ADT: 2,900
ARROW RD.
GoodOver: WINNEBEGO DITCH
0.5 MI W. DEER GROVE, Whiteside, IL
Built 1969 Load: 35.3 t ADT: 50
VAN DYKE RD
GoodOver: WEST NORMAN DRAIN
.52M SO OF 135TH, Will, IL
Built 1997 Load: 35.3 t ADT: 5,500
Jefferson St
GoodOver: KENT CREEK
0.1 mi W. of Kilburn, Winnebago, IL
Built 1940 Load: 35.3 t ADT: 4,150
BELLROSE MAINT. RD
GoodOver: BIG CREEK
SEC 17 T14S R1E, Pulaski, IL
Built 1996 Load: 35.4 t ADT: 10
IL 140
GoodOver: Indian Creek
3.4mi E Old Ripley, Bond, IL
Built 1930 Load: 35.6 t ADT: 2,050
TR-321 Cannonball
GoodOver: E Fork Spoon River
1 MI. E. NEPONSET, Bureau, IL
Built 1993 Load: 35.6 t ADT: 75
IL 64/ US 52
GoodOver: MISS RIV & BNRR
NW EDGE OF SAVANNA, Carroll, IL
Built 2018 Load: 35.6 t ADT: 2,300
IL 78
GoodOver: PRAIRIE CREEK
3.6M S IL125VIRGINIA, Cass, IL
Built 1998 Load: 35.6 t ADT: 2,050
TR 98
GoodOver: DICKERSON SLOUGH
3.7 MI NE FISHER, Champaign, IL
Built 1984 Load: 35.6 t ADT: 150
FAS 1647 - CH 9
GoodOver: FLAT BRANCH
3.0 MI. W. MOWEAQUA, Christian, IL
Built 1976 Load: 35.6 t ADT: 200
CAMP JOY RD/TR 134
GoodOver: STONE QUARRY CREEK
.75 MW OF FAP 117, Clinton, IL
Built 1960 Load: 35.6 t ADT: 200
US 45/IL 121
GoodOver: STREAM
1.6 MI S OF IL 16, Coles, IL
Built 2009 Load: 35.6 t ADT: 6,900
TR 136
GoodOver: KICKAPOO CREEK
1.5 MI SE COLES AIRP, Coles, IL
Built 1978 Load: 35.6 t ADT: 350
EUCLID AVE.
GoodOver: SALT CREEK
0.4M.W.OF PLUM GR.RD, Cook, IL
Built 1973 Load: 35.6 t ADT: 18,000
IL 38 FAP 567
GoodOver: S BR KISHWAUKEE RIVR
0.6 MI W JCT IL 23, DeKalb, IL
Built 2007 Load: 35.6 t ADT: 12,700
FAP 749(IL 133)
GoodOver: DRAINAGE DITCH
1.5 MI W HINDSBORO, Douglas, IL
Built 1990 Load: 35.6 t ADT: 2,450
TR 299
GoodOver: PRAIRIE CREEK
TR 299 OV PRAIRIE CK, Franklin, IL
Built 1981 Load: 35.6 t ADT: 25
MS-2800 (Cass Pl)
GoodOver: Big Creek
W.CTR-27-T7NR4E, Fulton, IL
Built 2023 Load: 35.6 t ADT: 150
Showing 22,351-22,400 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 |