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
I-39 SB/US 51SB
UnknownOver: I-80
2.56 MI W OF FAS 256, LaSalle, IL
Built 1979 ADT: 30,700
CH 19 FAS 270
UnknownOver: I-39/US 51
2.3 MI N. of US 52, LaSalle, IL
Built 1971 ADT: 18,700
I-39, US 51
UnknownOver: IL RV/IL 351/ BO RR
2.82 MI S OF I-80, LaSalle, IL
Built 1984 ADT: 4,850
FAU 6124/N.29TH RD
UnknownOver: I-39/US 51
1.0 Mile S. of I-80, LaSalle, IL
Built 1985 ADT: 19,600
US 6 FAP 623
UnknownOver: I-39/US 51
2.74 MI E OF ILL 351, LaSalle, IL
Built 1986 ADT: 19,400
N. 2575TH/FAU 6126
UnknownOver: I-39/US 51
2.21 M1 S.OF US 6, LaSalle, IL
Built 1986 ADT: 19,400
FAU 6093 WALNUT ST
UnknownOver: I-39/US 51
.78 MI W /IL 71/351, LaSalle, IL
Built 1985 ADT: 19,400
ILL 71 FAP 619
UnknownOver: I-39/US 51
0.46 MI W OF IL 251, LaSalle, IL
Built 1988 ADT: 19,300
CH 54
UnknownOver: I-39/US 51
0.54 W OF IL 251, LaSalle, IL
Built 1988 ADT: 19,800
TR 483
UnknownOver: I-39/US 51
6.13 MI N OF IL 18, LaSalle, IL
Built 1989 ADT: 19,400
FAS 254 CH 5
UnknownOver: I-39/US 51
4.0 MI N OF IL 18, LaSalle, IL
Built 1988 ADT: 19,400
TR 513
UnknownOver: I-39/US 51
2.0 MI N OF IL 18, LaSalle, IL
Built 1988 ADT: 19,400
TR 525
UnknownOver: I-39/US 51
1.0 MI N OF IL 18, LaSalle, IL
Built 1988 ADT: 19,400
ILL 18 FAP 653
UnknownOver: I-39/US 51
0.48 MI W OF IL 251, LaSalle, IL
Built 1988 ADT: 19,400
IL 23/FAP 68
UnknownOver: I 80
ILL 23 AT OTTAWA, LaSalle, IL
Built 1993 ADT: 27,400
IL 71 FAP 311
UnknownOver: I-80
JUNCTION IL 71, LaSalle, IL
Built 1995 ADT: 25,100
FAS 268 A
UnknownOver: ILL RIV & OR 11
.41 M S OF US 6, LaSalle, IL
Built 1999 ADT: 325
FAS 1267/TERRA COT
UnknownOver: I 80
7.0 M E OF IL 178, LaSalle, IL
Built 1997 ADT: 29,300
MS 7430(LONE TREE
UnknownOver: I 80
1 MI E OF IL 178, LaSalle, IL
Built 1997 ADT: 29,300
I-80 WB
UnknownOver: FAU 6081 LASALLE RD
.8 MI E OF IL 251JCT, LaSalle, IL
Built 1996 ADT: 5,200
I-80 EB
UnknownOver: FAU 6081 LASALLE RD
.8 MI E JCT IL 251, LaSalle, IL
Built 1996 ADT: 5,200
ILL 351 ST. VINCEN
UnknownOver: FAI 80
1.6 MI E JC ILL 251, LaSalle, IL
Built 2005 ADT: 28,400
MARSEILLES RD/FAS2
UnknownOver: I-80
3.8 MI E OF IL 71, LaSalle, IL
Built 2009 ADT: 27,600
IL 170 FAP 786
UnknownOver: IL RIVER & RIVER RD
S OF US RT 6, LaSalle, IL
Built 2009 ADT: 1,600
IL 178/FAU 6120
UnknownOver: I-80
N OF US 6 UTICA, LaSalle, IL
Built 2011 ADT: 29,300
PLANK RD/FAU 6097
UnknownOver: I-80
1.4 MI W OF IL 251, LaSalle, IL
Built 2011 ADT: 26,000
FAS 174/CH 9
UnknownOver: I-80 /Test Rd Access
4.0 M E of IL 178, LaSalle, IL
Built 2021 ADT: 29,300
FAP 68 (IL 23)
UnknownOver: Ped Bridge over I-80
Adjacent to IL 23 ov I-80, LaSalle, IL
Built 2021 ADT: 14,200
BROADWAY ST.
UnknownOver: BNSF RR & IL STREET
0.3 MI.E.OF ILL 23, LaSalle, IL
Built 2008 ADT: 275
CON-RAIL CORP.
UnknownOver: TR 274
E1600 N 1440 KANGLEY, LaSalle, IL
Built 1900 ADT: 75
FOOT TRAIL
UnknownOver: OR#1
STARVED ROCK ST PK, LaSalle, IL
Built 1935 ADT: 825
AT&SF RR
UnknownOver: MILDRED AVE
0.19 W OF OTTER CR, LaSalle, IL
Built 1900 ADT: 3,300
FAP-327 (US-50)
UnknownOver: FAS 1809
W INT AT LAWRENCEVIL, Lawrence, IL
Built 1960 ADT: 675
FAP-327 (US-50)
UnknownOver: FAP-332 (IL-1)
FAP-1 (ILL 1) INT, Lawrence, IL
Built 1959 ADT: 5,400
FAP-327 (US-50)
UnknownOver: CH 12
.5 MI E ILL-1 INT, Lawrence, IL
Built 1959 ADT: 75
FAP-327WB (US-50)
UnknownOver: FAS-1827
LAW-VINCENNES AP RD, Lawrence, IL
Built 1958 ADT: 1,250
FAP-327EB (US-50)
UnknownOver: FAS-1827
LAW-VINCENNES AP RD, Lawrence, IL
Built 1958 ADT: 1,250
FAP-327EB (US-50)
UnknownOver: TR-262
2.4 MI E AIRPORT INT, Lawrence, IL
Built 1957 ADT: 50
FAP-327WB (US-50)
UnknownOver: TR-262
2.4 MI E AIRPORT INT, Lawrence, IL
Built 1957 ADT: 50
FAP-327EB (US-50)
UnknownOver: FR-1747/ALLISON DT 2
.5 MI W LAKE LAW INT, Lawrence, IL
Built 1959 ADT: 20
FAP-327WB (US-50)
UnknownOver: FR-1747/ALLISON DT 2
.5 MI W LAKE LAW INT, Lawrence, IL
Built 1959 ADT: 20
FAP-327EB (US-50)
UnknownOver: FAP-783
LAKE LAWRENCE INT, Lawrence, IL
Built 1961 ADT: 1,300
FAP-327WB (US-50)
UnknownOver: FAP-783
LAKE LAWRENCE INT, Lawrence, IL
Built 1961 ADT: 1,300
FAP-327EB (US-50)
UnknownOver: FR-2004/ALLISON DT 3
.5 MI E LAKE LAW INT, Lawrence, IL
Built 1961 ADT: 20
FAP-327WB (US-50)
UnknownOver: FR-2004/ALLISON DT 3
.5 MI E LAKE LAW INT, Lawrence, IL
Built 1961 ADT: 20
FAS-1807
UnknownOver: FAP-327EB (US 50)
INT NE LAWRENCEVILLE, Lawrence, IL
Built 1959 ADT: 7,500
FAP-783 (BUS US 50
UnknownOver: TR-209 & WABASH RV
VINCENNES IND, Lawrence, IL
Built 1931 ADT: 50
TR-208
UnknownOver: FAP-327 (US-50)
1.75 MI E JCT ILL 1, Lawrence, IL
Built 1959 ADT: 4,800
US 50 EB
UnknownOver: WABASH RV & IL RT 33
VINCENNES IND, Lawrence, IL
Built 1960 ADT: 1,050
US 50 WB
UnknownOver: WABASH RIV/ILL SR 33
VINCENNES IND, Lawrence, IL
Built 1960 ADT: 1,050
Showing 2,401-2,450 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 |